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Artykuły w czasopismach na temat „ZnO/Ag”

Autor: Grafiati

Data publikacji: 19 października 2024

Data aktualizacji: 31 lipca 2025

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1

Naji, Hassan Khuder, Amjed Mirza Oda, Wesam Abdulaljeleel, Hussein Abdilkadhim, and Rawaa Hefdhi. "ZNO-Ag/PS and ZnO/PS Films for Photocatalytic Degradation of Methylene Blue." Indonesian Journal of Chemistry 20, no. 2 (2020): 314. http://dx.doi.org/10.22146/ijc.41347.

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Two films of ZnO-Ag/polystyrene (ZnO-Ag/PS) and ZnO/polystyrene (ZnO/PS) have been prepared to evaluate the photodegradation ability of stabilized catalysts. The efficiency of ZnO improved against recombination of electron-hole pair by modification of catalyst surface with Ag photodeposition to be more resistant towards photocorrosion. ZnO-Ag catalyst was characterized by SEM and EDS analysis to show high roughness of this catalyst and Ag deposited on the surface was 2% (molar ratio). ZnO-Ag/PS and ZnO/PS composites were made as films and were then analyzed by FTIR spectra that showed the inte

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2

Yuan, Xiaohong, Qufu Wei, Huizhen Ke, Zujian Huang, and Dongsheng Chen. "Structural color and photocatalytic property of polyester fabrics coated with Ag/ZnO composite films." International Journal of Clothing Science and Technology 31, no. 4 (2019): 487–94. http://dx.doi.org/10.1108/ijcst-09-2018-0112.

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Purpose The purpose of this paper is to prepare structural colors of fabrics coated with Silver/Zinc Oxide (Ag/ZnO) composite films by magnetron sputtering and analyze the relationship between the colors and the thickness of Zinc Oxide (ZnO) film in Ag/ZnO composite film and the photocatalytic property of the fabrics coated with Ag/ZnO composite film. Design/methodology/approach Ag/ZnO composite films deposited on polyester fabrics were prepared by magnetron sputtering technology. The structural colors of textiles coated with Ag/ZnO composite films and the relationship between the colors and A

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3

Shang, Jian, Ye Sun, Teng Zhang, Zhen Liu, and Hong Zhang. "Enhanced Antibacterial Activity of Ag Nanoparticle-Decorated ZnO Nanorod Arrays." Journal of Nanomaterials 2019 (April 30, 2019): 1–7. http://dx.doi.org/10.1155/2019/3281802.

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Silver (Ag) has broad-spectrum antibacterial properties and is widely used in various fields, including in antibacterial coatings for orthopedic implants. For reasons of cost and cytotoxicity, improvement of the antibacterial efficiency of Ag is necessary. The scientific community has also shown a strong enthusiasm in this research area. In this paper, ZnO nanorod arrays were prepared on a titanium (Ti) substrate by seed-assisted hydrothermal method and Ag nanoparticles were deposited by magnetron sputtering to obtain Ag nanoparticle-decorated ZnO nanorod arrays (ZnO nanorods/Ag nanoparticles)

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4

Vu, Anh-Tuan, Thi Anh Tuyet Pham, Thi Thuy Tran, et al. "Synthesis of Nano-Flakes Ag•ZnO•Activated Carbon Composite from Rice Husk as A Photocatalyst under Solar Light." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 1 (2020): 264–79. http://dx.doi.org/10.9767/bcrec.15.1.5892.264-279.

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This study aimed to synthesize Ag•ZnO•Activated carbon (Ag•ZnO•AC ) composite from rice husk for degradation of dyes. The deposition of Ag and ZnO on AC led to decreasing the surface area and pore volume of Ag•ZnO•AC composite. In addition, when Ag and ZnO were dispersed on activated carbon, the Ag•ZnO flakes became denser and tighter, but the particle size of Ag became smaller from 5 to 7 nm. The photocatalytic ability of Ag•ZnO•AC composite was evaluated by degradation of Janus Green B (JGB) and compared with that of AC, ZnO, Ag•ZnO, and ZnO•AC samples. The effects of catalyst dosages, pH va

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5

Yi, Zhigang, Tao Jiang, Ying Cheng, and Qiong Tang. "Effect of SiO2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod-like ZnO." Nanotechnology Reviews 9, no. 1 (2020): 1009–16. http://dx.doi.org/10.1515/ntrev-2020-0081.

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AbstractTo study the effect of improved adsorption property of tetrapod-like ZnO (T-ZnO) on its photocatalytic performance, a new composite was prepared by loading silica aerogels (SiO2(AG)) on the surface of T-ZnO via the sol–gel method. Various characterization methods showed that SiO2(AG) was uniformly loaded on the surface of T-ZnO, and the morphology as well as structural characteristics of SiO2(AG) and T-ZnO were not changed. Nitrobenzene (NB) was selected as the model pollutant, and the adsorption and photocatalytic properties of T-ZnO and SiO2(AG)/T-ZnO for NB were studied. The photoca

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6

Hu, Ya Wei, Hui Rong He, Xia Kong, and Yang Min Ma. "Synthesis and Antibacterial Activities of Ag/ZnO Nanoparticles." Key Engineering Materials 697 (July 2016): 714–17. http://dx.doi.org/10.4028/www.scientific.net/kem.697.714.

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Ag/ZnO nanoparticles with different Ag concentrations were fabricated through sol-gel method under 500 °C for 60 min with a heating rate 5 °C·min-1. The phase, the crystallographic structure and the surface topography of the Ag/ZnO nanoparticles were charactered by XRD and SEM. The antibacterial activities of the Ag/ZnO nanoparticles were performed by disc diffusion method. The results indicate that the as-prepared Ag/ZnO nanoparticles display great antibacterial activity than ZnO nanoparticle without Ag doping. And Ag/ZnO nanoparticles with 5 mol% Ag concentration show more excellent antibact

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7

Hsueh, Yi-Huang, Chien-Te Hsieh, Shu-Ting Chiu, Ping-Han Tsai, Chia-Ying Liu, and Wan-Ju Ke. "Antibacterial Property of Composites of Reduced Graphene Oxide with Nano-Silver and Zinc Oxide Nanoparticles Synthesized Using a Microwave-Assisted Approach." International Journal of Molecular Sciences 20, no. 21 (2019): 5394. http://dx.doi.org/10.3390/ijms20215394.

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Graphene oxide (GO) composites with various metal nanoparticles (NPs) are attracting increasing interest owing to their broad scope in biomedical applications. Here, microwave-assisted chemical reduction was used to deposit nano-silver and zinc oxide NPs (Ag and ZnO NPs) on the surface of reduced GO (rGO) at the following weight percentages: 5.34% Ag/rGO, 7.49% Ag/rGO, 6.85% ZnO/rGO, 16.45% ZnO/rGO, 3.47/34.91% Ag/ZnO/rGO, and 7.08/15.28% Ag/ZnO/rGO. These materials were tested for antibacterial activity, and 3.47/34.91% Ag/ZnO/rGO and 7.08/15.28% Ag/ZnO/rGO exhibited better antibacterial acti

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8

Kalnaowakul, Phuri, Tonghathai Phairatana, and Aphichart Rodchanarowan. "Photocatalytic Comparative Study of TiO₂, ZnO, Ag-G-ZnO and Ag-G-TiO₂ Nanocomposite Films." Key Engineering Materials 751 (August 2017): 825–30. http://dx.doi.org/10.4028/www.scientific.net/kem.751.825.

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In this study, the photocatalytic properties and morphology of TiO2, ZnO, Ag-graphene-zinc oxide (Ag-G-ZnO) and Ag-graphene-titanium dioxide (Ag-G-TiO2) nanocomposite were compared. The Ag-G-ZnO and Ag-G-TiO2 nanocomposite were successfully prepared by thermal decomposition of colloidal solution. These prepared composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectroscopy and photocatalytic activities. The results from XRD patterns show that Ag-G-TiO2 composites and the Ag-G-ZnO nanocomposites were in the form of fcc and hcp crystal structure

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9

Wen, Jing, Chun Ying Zuo, and Cheng Zhong. "Ab Initio Investigations of Electronic Structure and Optical Properties of Ag-F Codoped ZnO." Advanced Materials Research 152-153 (October 2010): 1097–102. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1097.

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Motivated by the widely discussed Ag doped ZnO and the lack of follow-up reports about the realization of p-n junctions, we calculated the electronic structures and optical properties of pure, Ag-doped and Ag-F codoped ZnO based on the density-functional theory. It was found that Ag doped ZnO shows p-type conduction character. But there are some unstable factors and self-compensations in this structure. We also calcualted the formation energy and ionization energy of the impurity for Ag-F codoped ZnO. It was found that incorporating the reactive donor F into Ag doped ZnO system, not only enhan

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10

Saratovskii, A. S., K. Yu Senchik, A. V. Karavaeva, S. K. Evstropiev, and N. V. Nikonorov. "Photo-oxygenation of water media using photoactive plasmonic nanocomposites." Journal of Chemical Physics 156, no. 20 (2022): 201103. http://dx.doi.org/10.1063/5.0094408.

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Plasmonic nanocomposites ZnO–Ag and ZnO–SnO2–Ag(AgCl) were prepared by the polymer–salt method, and their structure and morphology were studied using XRD and SEM analyses. It was found that the addition of photoactive inorganic nanocomposites ZnO–Ag and ZnO–SnO2–Ag(AgCl) in pure water significantly enhances the effectiveness of its disinfection and purification during UV treatment and provides the effective water oxygenation. Oxygen photogeneration under blue light (λex. = 405 nm) can be related to the plasmon-excitation processes in ZnO–SnO2–Ag(AgCl) composites. Prepared composites demonstrat

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11

A, Rathika, and Irine T. M. "SYNTHESIS OF SILVER (Ag) DOPED ZINC OXIDE (ZnO) NANOPARTICLES AS EFFICIENTPHOTOCATALYTIC ACTIVITY FOR DEGRADATION METHYLENE BLUE DYE." Journal of Advanced Scientific Research 13, no. 02 (2022): 129–35. http://dx.doi.org/10.55218/jasr.202213217.

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Zinc oxide (ZnO) and silver doped zinc oxide (Ag-ZnO) nanoparticles were prepared using zinc nitrates as oxidizers, glycine and citric acid as fuels as solution combustion synthesis (SCS) at 500°C. X-ray diffraction (XRD) pattern demonstrates the presence of Ag+ in the hexagonal zincite structure of ZnO. The average crystalline size of the particles of ZnO and Ag-ZnO were found to 47 nm and 74 nm respectively. From the Fourier transform infrared (FTIR) spectrum, the composition of Ag doped ZnO confirmed Ag-Zn-O stretching vibration at 510 cm-1. The UV-Visible absorption spectra results showed

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12

Floro, J. A., J. R. Michael, L. N. Brewer, and J. W. P. Hsu. "Preferred heteroepitaxial orientations of ZnO nanorods on Ag." Journal of Materials Research 25, no. 7 (2010): 1352–61. http://dx.doi.org/10.1557/jmr.2010.0179.

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Wurtzite ZnO nanorods were grown from solution onto coarse-grain bulk polycrystalline Ag substrates to explore the nature of preferred heteroepitaxial orientations. ZnO nanorods grow copiously on grains with <111> and <001> surface normals. Two epitaxial orientations were observed: {0001} ZnO ‖ {111} Ag with <20> ZnO ‖ <10> Ag and {0001} ZnO ‖ {001} Ag with <20> ZnO ‖ <10> Ag. Both feature ZnO basal plane growth, and the specific in-plane orientation relationships both feature alignment of close-packed directions in the interface. Nanorod growth was strongly

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13

Cai, Yu, Chengbao Yao, and Jie Yuan. "Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism." Journal of Nanomaterials 2020 (March 20, 2020): 1–9. http://dx.doi.org/10.1155/2020/6742728.

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This paper focuses on the enhancement of photoelectrochemical (PEC) performance of uniform silver nanoparticles-decorated ZnO (Ag@ZnO) nanowires, which have been synthesized by two-step chemical vapor deposition to prepare ZnO nanowires then magnetron sputtering method to deposit Ag nanoparticles. Moreover, we analyzed the mechanisms of the PEC behavior of the Ag@ZnO nanowires. The PEC characteristics show that the current density of Ag@ZnO nanowires increased comparing to that of unmodified ZnO nanowires. The optimized content of the Ag-decorated ZnO photoelectrode is up to the maximum photoc

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14

Hamza, B. M., L. S. Chuah, and S. Purushothaman. "Synthesis and characterization of Ag–ZnO nanocomposites." Journal of Optoelectronic and Biomedical Materials 17, no. 1 (2025): 35–39. https://doi.org/10.15251/jobm.2025.171.35.

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This study focuses on synthesizing a hybrid nanocomposite of silver (Ag) and zinc oxide (ZnO) by utilizing their bulk salts as precursors to form the Ag–ZnO nanocomposite. Silver (Ag) and zinc oxide (ZnO) nanoparticles are synthesized via a chemical reduction method, followed by co-mixing and calcination processes to produce the Ag–ZnO nanocomposite. The synthesized nanoparticles are characterized using scanning electron microscope (SEM), high resolution (HRXRD), and energy dispersive X-Ray (EDX) to determine their morphological attributes, crystallographic structure, and elemental composition

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15

NIE, Jingkai, Guangke WANG, Dong HOU, Fu GUO, and Yu HAN. "The Preparation and Research on the Electromagnetic Shielding Effectiveness of T-ZnO@Ag/Silicone Rubber Composites." Materials Science 26, no. 2 (2019): 205–9. http://dx.doi.org/10.5755/j01.ms.26.2.21286.

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This study first conducted surface modification of Ag-plated Tetrapod-like zinc oxide (T-ZnO) whiskers with the use of dopamine and prepared Ag-plated T-ZnO whiskers (T-ZnO@Ag) by means of chemical plating, in which AgNO3 solutions with different concentrations were used during the preparation. Micro-structures of the prepared T-ZnO@Ag powders were examined to evaluate the effect of AgNO3 concentration on Ag plating performance. Subsequently, conductive Si rubber samples were prepared, the T-ZnO@Ag powders were used as fillers, and the effectiveness of the related electromagnetic shielding was

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16

Azhar J. Bohan, Ghaed K. Salman, and Duha S. Ahmed. "Enhanced bioactivity of Pure ZnO and ZnO-Ag nanocomposite Using Sol-Gel method for Self-Cleaning Application." International Journal of Research in Pharmaceutical Sciences 10, no. 4 (2019): 3649–56. http://dx.doi.org/10.26452/ijrps.v10i4.1748.

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In the current study, Pure ZnO and Ag-ZnO nanocomposite are established using the sol-gel method with the influence of ammonia solution NH4OH to incorporate Ag ions into ZnO and form Ag-ZnO nanocomposites. Then pure ZnO and Ag-ZnO nanocomposites were annealed at 450oC for tow h in a muffle furaning using temperture controlling, and heat rate was set at temperature 100oC per min. The structural and morphological properties of samples were characterized using XRD, FTIR, and FESEM with Energy dispersive X-rays (EDX). In addition, the antibacterial activity of pure ZnO and Ag- ZnO nanocomposite wa

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17

Li, Yong, Ya Liang Chen, and Yan Qun Shao. "Study on the Photocatalytic Degradation of MB by the ZnO@PDA and ZnO-Ag@PDA." Journal of Nano Research 84 (September 20, 2024): 67–81. http://dx.doi.org/10.4028/p-titte7.

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Photocatalysis properties enhanced by metal and organic polymer has been received more interest because of their ability to directly or indirectly degrade pollutants. The effect of PDA (polydopamine) and Ag nanoparticles on the different phases of ZnO to degrade organic dyes under visible and UV-vis light was investigated. ZnO@PDA, ZnO-Ag, and ZnO-Ag@PDA nanoparticles were synthesized. It’s shown that Ag particles with sizes of less than 20 nm were deposited evenly on the ZnO. There were a few changes in the structure of ZnO@PDA or ZnO-Ag @PDA. When the ZnO was coated by PDA, the photocatalyti

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18

Ding, Chao, Kun Fu, Yishuai Pan, Jia Liu, Huiping Deng, and Jun Shi. "Comparison of Ag and AgI-Modified ZnO as Heterogeneous Photocatalysts for Simulated Sunlight Driven Photodegradation of Metronidazole." Catalysts 10, no. 9 (2020): 1097. http://dx.doi.org/10.3390/catal10091097.

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Ag and AgI-modified ZnO composites (Ag/ZnO and AgI/ZnO) were synthesized in facile ways. The photocatalysts were used for the photodegradation of metronidazole (MNZ) under the irradiation of simulated sunlight. The results of experiments showed that both Ag/ZnO and AgI/ZnO had a specific molar ratio to reach the best performance. Ag/ZnO performed better in the photodegradation of MNZ than AgI/ZnO under the same conditions. The reaction rate constant of AgI/ZnO was less affected by the variation of initial concentration of MNZ or pH values. The main reactive oxygen species of the photocatalytic

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19

Mazur, Marek Witold, Anna Grudniak, Urszula Szałaj, et al. "Antifungal Activity of Newly Formed Polymethylmethacrylate (PMMA) Modification by Zinc Oxide and Zinc Oxide–Silver Hybrid Nanoparticles." Polymers 16, no. 24 (2024): 3512. https://doi.org/10.3390/polym16243512.

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Incorporating nanoparticles into denture materials shows promise for the prevention of denture-associated fungal infections. This study investigates the antifungal properties of acrylic modified with microwave-sintered ZnO-Ag nanoparticles. ZnO-Ag nanoparticles (1% and 2.5% wt.) were synthesized via microwave solvothermal synthesis (MSS). Nanoparticles were characterized for phase purity, specific surface area (SSA), density, morphology, and elemental composition. ZnO and ZnO-Ag nanoparticles were added to acrylic material (PMMA) at concentrations of 1% and 2.5% and polymerized. Pure PMMA (con

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20

Yu, Cheng-Lung, Guan-Yu Chen, Congo Tak Shing Ching, and Po-Liang Liu. "First-principles studies on the work function changes of ZnO( 2 1 ¯ 1 ¯ 0 ) surfaces induced by NO and NO₂ adsorption for gas sensors." Journal of Physics: Conference Series 2949, no. 1 (2025): 012020. https://doi.org/10.1088/1742-6596/2949/1/012020.

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Abstract This study employs first-principles calculations based on density functional theory to investigate the work function changes induced by the adsorption of nitric oxide and nitrogen dioxide on clean ZnO( 2 1 ¯ 1 ¯ 0 ) surfaces and Ag-decorated ZnO( 2 1 ¯ 1 ¯ 0 ) surfaces. The results indicate that the maximum work function change for NO adsorption on clean ZnO( 2 1 ¯ 1 ¯ 0 ) surfaces is −0.78 eV, while the maximum work function change for NO2 adsorption on Ag-decorated ZnO( 2 1 ¯ 1 ¯ 0 ) surfaces is – 1.74 eV. On the Ag atom initially adsorbed on the Zn site of the ZnO( 2 1 ¯ 1 ¯ 0 ) su

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21

Venugopal, N., and Anirban Mitra. "Plasmonics Properties of ZnO/Ag/ZnO Multilayer Thin Films." Advanced Materials Research 585 (November 2012): 214–18. http://dx.doi.org/10.4028/www.scientific.net/amr.585.214.

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The optical properties of ZnO (Zinc Oxide)/Ag (silver)/ZnO (Zinc Oxide)/glass multilayer structure have been investigated. These properties could be tuned using the plasmonic properties of the intermediate Ag layer. ZnO thin film of 80 nm thickness has been deposited using Spray Pyrolysis on Glass Substrate. Prior to the deposition of approximately same thickness of ZnO like the previous one, a thin layer of Ag with thicknesses varying from 0.5 nm to 10 nm have been deposited using Vacuum Deposition. We have correlated the properties of multilayer thin film with thickness and morphology of the

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Thu, Phung Thi, Vu Duy Thinh, Vu Dinh Lam, et al. "Decorating of Ag and CuO on ZnO Nanowires by Plasma Electrolyte Oxidation Method for Enhanced Photocatalytic Efficiency." Catalysts 12, no. 7 (2022): 801. http://dx.doi.org/10.3390/catal12070801.

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In this work, photocatalytic performance is divulged in the ternary CuO-Ag-ZnO nanowire synthesized via a two-step approach. The decoration of Ag and CuO nanostructures onto the surface of ZnO nanowires was simply carried out by using the plasma electrolytic oxidation method in a short time. The structure, size, morphology, and optical properties of as-prepared samples were characterized by X-ray diffraction, field-emission scanning electron microscopy, and spectrophotometry measurements. The diameters of Ag nanoparticles and ZnO nanoflowers are in the range of 5–20 nm and 20–60 nm, respective

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23

Zaed, Nooraluhda, Tahseen H. Mubarak, and Nadia M. Jassim. "Preparation and Study of the Structural and Optical Properties of TiO2 – Ag-ZnO Nanoparticles." Academic Science Journal 3, no. 2 (2025): 145–65. https://doi.org/10.24237/asj.03.02.850c.

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TiO2 ,Ag, ZnO, TiO2/Ag NPs and TiO2/Ag/ZnO NPs were prepared using pulsed laser ablation in liquids (PLAL) Technique. The effect of number of pulses ( 550, 650, 800) on the structural and optical properties of nanoparticles prepared in distilled water (DW) as growth media were examined using a Q-Switched Nd-YAG laser at wavelength (1064 nm) , ablation energy (610 mJ). As for the (Ag NPs,TiO2 NPs, ZnO NPs, TiO2/Ag and TiO2/Ag/ZnO NPs) they were hybridized by the volumetric method. The results of (FE-SEM) for samples prepared with distilled water (DW) showed that the Particle size was (39.1, 62.

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Jose, Y. Jerlin, S. Joseph Selvaraj, and M. Manjunathan. "Synthesis, Characterization, Photocatalytic Activities and Reusability of Eu-ZnO-Ag Nanoparticles using Sunlight/LEDs Illuminations." Asian Journal of Chemistry 31, no. 4 (2019): 813–19. http://dx.doi.org/10.14233/ajchem.2019.21745.

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Photocatalyst (Eu–ZnO–Ag) was synthesized by precipitation-decomposition process. The characterization catalyst by phase and size of catalyst by powder-XRD, morphology of catalyst by FE-SEM and optical properties by UV-visible and emission spectroscopy. The photocatalytic action of Eu–ZnO–Ag was investigated in the photodegradation of methylene blue dye in water under LEDs/ solar light. Eu–ZnO–Ag catalyst is indicating the excellent activity than Ag–ZnO, Eu–ZnO commercial ZnO/TiO2 nanoparticles. Co-dopants (Eu/Ag) shift the light absorbance of ZnO toward visible region. Factor affecting of pho

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Pang, Xinzhu, Nathan Skillen, Detlef W. Bahnemann, David W. Rooney, and Peter K. J. Robertson. "Photocatalytic H2O2 Generation Using Au-Ag Bimetallic Alloy Nanoparticles loaded on ZnO." Catalysts 12, no. 9 (2022): 939. http://dx.doi.org/10.3390/catal12090939.

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Hydrogen peroxide (H2O2) is an important chemical as it is an environmentally friendly oxidant for organic synthesis and environmental remediation as well as a promising candidate for the liquid fuel. Photocatalytic generation of H2O2 is sustainable, and many efforts have been put into the development of new catalysts to gain high H2O2 yields. In this investigation, Au/ZnO, Ag/ZnO and Au-Ag/ZnO catalysts were prepared by the simultaneous impregnation of HAuCl4 and AgNO3 and they were used to generate H2O2 from a methanol/O2 system. It was demonstrated that Au/ZnO had the best performance at ge

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Liu, Xingzuo, Zhuo Chen, Yue Zhao, et al. "The study of metal enhanced fluorescence property of Ag/ZnO composite structure." Modern Physics Letters B 31, no. 07 (2017): 1750073. http://dx.doi.org/10.1142/s0217984917500737.

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In this paper, Ag nanoparticles were successfully prepared by chemical reduction, and then Ag/ZnO composite particles were successfully prepared and deposited onto glass substrates to form Ag/ZnO thin films. Hereafter, the structure, the morphology and the metal enhanced fluorescence (MEF) property of Ag nanoparticles and ZnO/Ag composite particles were studied by XRD, SEM, EDS, TEM, UV-vis absorption and fluorescence (FL) spectrometer. The results showed that the average size of Ag nanoparticles increased with the increase of prepared time. Moreover, ZnO layer consisted of polycrystalline str

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Alahmadi, Nadiyah, and Mahmoud A. Hussein. "Impact of Ag/ZnO Reinforcements on the Anticancer and Biological Performances of CA@Ag/ZnO Nanocomposite Materials." Molecules 28, no. 3 (2023): 1290. http://dx.doi.org/10.3390/molecules28031290.

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In this study, an unpretentious, non-toxic, and cost-effective dissolution casting method was utilized to synthesize a group of anticancer and biologically active hybrid nanocomposite materials containing biopolymer cellulose acetate. Pristine ZnO and Ag(0.01, 0.05, 0.1)/ZnO hybrid nanofillers based on variable Ag NP loadings were prepared via green procedures in the presence of gum arabic (GA). The chemical structures and the morphological features of the designed nanocomposite materials were investigated by PXRD, TEM, SEM, FTIR, TGA, and XPS characterization techniques. The characterization

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Jha, Pankaj Kumar, Chamorn Chawengkijwanich, Chonlada Pokum, Pichai Soisan, and Kuaanan Techato. "Antibacterial Activities of Biosynthesized Zinc Oxide Nanoparticles and Silver-Zinc Oxide Nanocomposites using Camellia Sinensis Leaf Extract." Trends in Sciences 20, no. 3 (2023): 5649. http://dx.doi.org/10.48048/tis.2023.5649.

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Green route of nanomaterials synthesis is increasing in demand due to ecofriendly to the environment. In this research, objective is to biosynthesize and evaluate the antibacterial performance of pure ZnO and Ag/ZnO nanocomposites using Camellia sinensis leaf extracts. Pure ZnO nanoparticles and Ag/ZnO nanocomposites were synthesized using Camellia sinensis leaf extract. The antibacterial effectiveness against gram-positive (Staphylococcus aureus) and gram-negative (Escherichia coli) bacteria were examined and compared with 1 % Chlorox as a commercial disinfectant by well diffusion method base

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Taringan, Agres K., Audy D. Wuntu, and Henry F. Aritonang. "Kinetika Fotodegradasi Remazol Yellow Menggunakan Fotokatalis ZnO dan ZnO-Ag." Jurnal MIPA 6, no. 2 (2017): 68. http://dx.doi.org/10.35799/jm.6.2.2017.17762.

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Telah dilakukan penelitian tentang kinetika fotodegradasi remazol yellow dengan menggunakan ZnO dan ZnO yang disisipi 1%, 3%, 5%, 7%, dan 9% Ag yang disintesis dengan metode kopresipitasi. Eksperimen kinetika dilakukan melalui penentuan konsentrasi remazol yellow yang tersisa setelah interaksi ZnO dan ZnO-Ag dengan larutan remazol yellow yang disinari UV selama 0, 20, 40, 60, 80, 100, 120 dan 140 menit. Selanjutnya data dianalisis mengikuti model kinetika reaksi orde pertama. Hasil penelitian menunjukkan bahwa laju reaksi fotodegradasi oleh ZnO meningkat dengan penambahan konsentrasi dopan AgA

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Vitanov, Petko, Tatyana Ivanova, Hristosko Dikov, et al. "Effect of a Discontinuous Ag Layer on Optical and Electrical Properties of ZnO/Ag/ZnOStructures." Coatings 12, no. 9 (2022): 1324. http://dx.doi.org/10.3390/coatings12091324.

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ZnO/Ag/ZnO nanolaminate structures were deposited by consecutive RF sputtering at room temperature.The optical transparency, sheet resistance, and figure of merit are determined in relation to the deposition time of Ag and to the film thickness of the ZnO top layer. An improved transmittance has been found in the visible spectral range of the ZnO/Ag/ZnO structure compared to ZnO multilayers without Ag. High transmittance of 98% at 550 nm, sheet resistance of 8 Ω/sq, and figure of merit (FOM) of 111.01 × 10−3 Ω−1are achieved for an optimized ZnO/Ag/ZnO nanolaminate structure. It is suggested th

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Nigussie, Gebretinsae Yeabyo, Gebrekidan Mebrahtu Tesfamariam, Berhanu Menasbo Tegegne, et al. "Antibacterial Activity of Ag-Doped TiO2 and Ag-Doped ZnO Nanoparticles." International Journal of Photoenergy 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/5927485.

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We report in this paper antibacterial activity of Ag-doped TiO2 and Ag-doped ZnO nanoparticles (NPs) under visible light irradiation synthesized by using a sol-gel method. Structural, morphological, and basic optical properties of these samples were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectrum, and UV-Vis reflectance. Room temperature X-ray diffraction analysis revealed that Ag-doped TiO2 has both rutile and anatase phases, but TiO2 NPs only have the anatase phase. In both ZnO and Ag-doped ZnO NPs, the hexagonal wurtzite

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Lin, Yu-Hsuan, Chandrasekar Sivakumar, Babu Balraj, Gowtham Murugesan, Senthil Kumar Nagarajan, and Mon-Shu Ho. "Ag-Decorated Vertically Aligned ZnO Nanorods for Non-Enzymatic Glucose Sensor Applications." Nanomaterials 13, no. 4 (2023): 754. http://dx.doi.org/10.3390/nano13040754.

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The non-enzymatic glucose sensing response of pure and Ag-decorated vertically aligned ZnO nanorods grown on Si substrates was investigated. The simple low-temperature hydrothermal method was employed to synthesize the ZnO NRs on the Si substrates, and then Ag decoration was achieved by sputtering. The crystal structure and surface morphologies were characterized by X-ray diffraction, field-emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The Ag incorporation on the ZnO NR surfaces was confirmed using EDS mapping and spectra. Furthermore, the chemical

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Ivanova, Dobrina, George Tzvetkov, and Nina Kaneva. "Degradation of Paracetamol in Distilled and Drinking Water via Ag/ZnO Photocatalysis under UV and Natural Sunlight." Water 15, no. 20 (2023): 3549. http://dx.doi.org/10.3390/w15203549.

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The present study demonstrates the synthesis and application of Ag/ZnO powder films (thickness of 4 μm) as photocatalysts for natural sunlight and ultraviolet (UV, 315–400 nm) irradiation. The synthesis procedure is simple and eco-friendly, based on the photo-fixation of silver ions onto commercial ZnO powder via UV illumination for the first time. The photocatalytic efficiency of the newly developed films is evaluated through degradation of paracetamol in distilled and drinking water. Our experimental evidences show that the Ag/ZnO nanostructure films are more active than pristine ZnO films i

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Li, Zhenjiang, Xiaoyan Fan, Alan Meng, Yunbo Zhang, Kaixing Zhu, and Qingdang Li. "Porous Nanofibers Formed by Heterogeneous Growth of ZnO/Ag Particles and the Enhanced Photocatalysis." Journal of Nanoscience and Nanotechnology 19, no. 11 (2019): 7163–68. http://dx.doi.org/10.1166/jnn.2019.16518.

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Porous ZnO/Ag nanofibers with unique multi-interface contact structures have been synthesized by an electrospinning method. The composite nanofibers with the length of several hundred micrometers are composed of uniformly distributed ZnO and Ag nanoparticles in the size range 10~30 nm. Notably, a heterogeneous growth in the interface of ZnO and Ag particles occurs. The MO degradation rate of ZnO/Ag nanofibers with Ag content of 18 wt.% is 100% in 10 min under UV-vis irradiation and that of ZnO/Ag nanofibers with Ag content of 15 wt.% is 92% in 40 min under simulated day light, which is two tim

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Hoai, Pham Thi Thu, Nguyen Thi Mai Huong, Pham Thi Huong, and Nguyen Minh Viet. "Improved the Light Adsorption and Separation of Charge Carriers to Boost Photocatalytic Conversion of CO2 by Using Silver Doped ZnO Photocatalyst." Catalysts 12, no. 10 (2022): 1194. http://dx.doi.org/10.3390/catal12101194.

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This work developed a strategy to enhance the photocatalytic activity of ZnO by doping it with silver nanoparticles (Ag) to improve the light adsorption and separation of charge carriers, which further increases the conversion of CO2. The loading of Ag over ZnO (Ag-ZnO) was confirmed by characterization methods (SEM, XRD, and XPS), and the photocatalytic activities of Ag-ZnO were significantly enhanced. As the result, the production rates of CO and CH4 by doped Ag-ZnO were 9.8 and 2.4 µmol g−1 h−1, respectively. The ZnO that had the production rate of CO was 3.2 µmol g−1 h−1 and it is relative

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Rodmuang, Sirirat, Raweewan Plairaharn, Kanokwan Teingtum, Suntree Sangjan, and Orawan Chunhachart. "Effect of Ag/ZnO-Graphitic Carbon Nitride on Antimicrobial Activity under Visible Light." Key Engineering Materials 858 (August 2020): 116–21. http://dx.doi.org/10.4028/www.scientific.net/kem.858.116.

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Zinc oxide-graphitic carbon nitride (ZnO/g-C3N4) composites were synthesized by precipitation method in order to improve photocatalytic activity under visible light. To enhance antimicrobial activity, silver was added into zinc oxide-graphitic carbon nitride (Ag/ZnO/g-C3N4). Ultrastructures of the composite were analyzed by X-ray diffractometry (XRD) and transmission electron microscopy (TEM). Photocatalytic activity of the composites was carried out by degradation of methylene blue solution as a function of contact time. The results revealed that ZnO/g-C3N4 was capable of dye degradation at 9

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Min, Jia Hua, Xiao Yan Liang, Bin Wang, Yue Zhao, Yun Guo, and Lin Jun Wang. "Characterization of Ag Doped P-Type ZnO Thin Films Prepared by Electrostatic-Enhanced Ultrasonic Spray Pyrolysis." Advanced Materials Research 299-300 (July 2011): 436–39. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.436.

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In this paper, the structure, electrical and optical properties and stabilities of Ag doped p-type ZnO thin films, prepared by electrostatic-enhanced ultrasonic spray pyrolysis were investigated. XRD and Hall data analyses indicated that the resistivity of 4at. % Ag doped p-type ZnO was low, without Ag2O phase separation. The optical transmission spectra illustrated that optical band gaps decreases with the gradual increase of Ag dopant. Moreover, ZnO: Ag films placed for 10 days still showed p-type, but the optical transmittance decreased, suggesting that AgZn in the ZnO: Ag thin films captur

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Jiménez, Adriana Berenice Pérez, Carlos Alberto Huerta Aguilar, Jorge Manuel Vázquez Ramos, and Pandiyan Thangarasu. "Synergistic Antibacterial Activity of Nanohybrid Materials ZnO–Ag and ZnO–Au: Synthesis, Characterization, and Comparative Analysis of Undoped and Doped ZnO Nanoparticles." Australian Journal of Chemistry 68, no. 2 (2015): 288. http://dx.doi.org/10.1071/ch14123.

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ZnO nanoparticles (NPs) were prepared using the hydrothermal method, and then doped with Ag or Au NPs, yielding ZnO NPs, ZnO–Ag NPs, and ZnO–Au NPs, which were characterized by transmission electron microscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy. The synthesized nanomaterials were analyzed for their antibacterial properties against bacterial strains (Staphylococcus aureus, Bacillus cereus, Escherichia coli, and Salmonella typhi) by qualitative and quantitative assays. Minimal inhibitory concentration (MIC) results show that growth control is more effective for Gram-pos

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Tan, Hong Lin, Cong Ying Jia, Xiao Xu Ge, and Chao Xiang. "First-Principles Conductance Calculations of Ag-Al Co-Doped ZnO." Advanced Materials Research 468-471 (February 2012): 1726–31. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.1726.

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Based on Density Functional Theory (DFT) first-principles plane-wave ultra-soft pseudo-potential method, we calculated the electronic structure of wurtzite ZnO, Ag-doped ZnO and Ag-Al co-doped ZnO. And we anglicized of energy band structure, electron density of states of Ag-doped and Ag- Al co-doped ZnO crystal. The results indicated: Ag-doped ZnO introduced the deep accepter level in the energy gap, carrier (hole) located near the top of the valence band. And when we add active donor Al to the Ag-Al doped ZnO, the main level moved to low-energy, forming a shallow acceptor level. Meanwhile, th

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Ding, Yan Li, Yue Zhao, and Lin Jun Wang. "The Influence of Oblique Deposited Angle on Metal Enhanced Fluorescence Property of Ag and Ag/ZnO Core-Shell Structure." Advanced Materials Research 905 (April 2014): 32–36. http://dx.doi.org/10.4028/www.scientific.net/amr.905.32.

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In this paper, the Ag nanoparticles were successfully prepared by oblique evaporation method, and then the ZnO shell layer was coated on surface of silver particles using wet chemical method. Hereafter, the structure, the morphology and the metal enhanced fluorescence (MEF) property of the Ag and the Ag/ZnO core-shell particles were studied by XRD,SEM,TEM and fluorescence (FL) spectra. From the XRD patterns and the SEM,TEM images, the Ag nanocolumn and the Ag/ZnO composite were successful obtained. Furthermore, the density of Ag nanocolumnar structure decreased with the increase of depositing

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Zang, Ya Shu, Jun Yin, Jing Li, and Jun Yong Kang. "The Enhanced Raman Scattering from Ag Nanoball/ZnO Hollow Nanosphere Arrays Fabricated by Laser-Induced Annealing." Key Engineering Materials 609-610 (April 2014): 779–83. http://dx.doi.org/10.4028/www.scientific.net/kem.609-610.779.

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In this work, a facile method was presented to produce Ag nanoball (NB)/ZnO hollow nanosphere (HNS) hybrid structure. Large scale, two-dimensional (2D) ZnO HNS arrays were fabricated on sapphire substrates using the polystyrene (PS) nanospheres as the template. Ag film were deposited on ZnO HNS arrays by radio frequency (RF) magnetron sputtering and then aggregated into Ag NBs on the top of ZnO HNS by the laser irradiation treatment. The size and distribution of Ag NB arrays were controlled by employing different ZnO HNS supporting structure templates. The scanning electron microscopy (SEM) wa

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Zulaikha Umbaidilah, Siti, Nur Amierah M. Asib, Nurul Afaah Abdullah, Mohamad Rusop, and Zuraidah Khusaimi. "Influence of Different Atomic Percentage of Silver Doped Nano Zinc Oxide on Titanium Dioxide Seeded Substrate." International Journal of Engineering & Technology 7, no. 4.14 (2019): 544. http://dx.doi.org/10.14419/ijet.v7i4.14.27787.

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Non-doped ZnO/TiO2 and Silver (Ag) doped ZnO/TiO2 nanostructures thin film were successfully synthesized on glass substrate by using sol-gel spin coating technique for deposition of TiO2 seed layer and solution immersion method for growth of Ag-doped ZnO/TiO2 nanostructure. Different atomic percentage (at%) which is 0.5, 1.0, 1.5, 2.0 and 2.5 at% of Ag doped were added in 0.4 M of Zn2+ solution. The EDX result revealed that the sample was composed of Zn, O and Ag elements which confirmed the existence of Ag element in the sample. The XRD spectra shows that the intensity of the (002) peak of 0.

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Chang, Tung-Hao, Yun-Ting Liu, Yu-Cheng Chang, and An-Ya Lo. "Fabrication of Three-Dimensional ZnO: Ga@ITO@Ag SERS-Active Substrate for Sensitive and Repeatable Detectability." Nanomaterials 13, no. 1 (2022): 163. http://dx.doi.org/10.3390/nano13010163.

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Vertically aligned ZnO: Ga nanotowers can be directly synthesized on a glass substrate with a ZnO seed film via the chemical bath method. A novel heterostructure of ZnO: Ga@ITO@Ag nanotowers was subsequently deposited in the ITO layer and Ag nanoparticles via the facile two-step ion-sputtering processes on the ZnO: Ga nanotowers. The appropriate ion-sputtering times of the ITO layer and Ag nanoparticles can benefit the fabrication of ZnO: Ga@ITO@Ag nanotowers with higher surface-enhanced Raman scattering (SERS) enhancement in detecting rhodamine 6G (R6G) molecules. Compared with ZnO: Ga@Ag nan

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Mohammed Nemma, Noorullah, and Zainab Sabeeh Sadeq. "Eco-Friendly Synthesis of Ag-ZnO Nanocomposite Using Aloe-vera, Hibiscus Sabdariffa Plants and Their Antibacterial and Anti-fungi Activities." Iraqi Journal of Physics 21, no. 4 (2023): 14–23. http://dx.doi.org/10.30723/ijp.v21i4.1136.

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The current study used extracts from the aloe vera (AV) plant and the hibiscus sabdariffa flower to make Ag-ZnO nanoparticles (NPs) and Ag-ZnO nanocomposites (NCs). Ag/ZnO NCs were compared to Ag NPs and ZnO NPs. They exhibited unique properties against bacteria and fungi that aren't present in either of the individual parts. The Ag-ZnO NCs from AV showed the best performance against E. coli, with an inhibition zone of up to 27 mm, compared to the other samples. The maximum absorbance peaks were observed at 431 nm and 410 nm for Ag NPs, at 374 nm and 377 nm for ZnO NPs and at 384 nm and 391 nm

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Копач, В. Р., Е. С. Клепикова, Н. П. Клочко та ін. "Структура и свойства электроосажденных в импульсном режиме наноструктурированных массивов ZnO и нанокомпозитов ZnO/Ag на их основе". Физика и техника полупроводников 51, № 3 (2017): 348. http://dx.doi.org/10.21883/ftp.2017.03.44206.8303.

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Исследованы структура, морфология поверхности и оптические свойства электроосажденных в импульсном режиме наноструктурированных массивов ZnO, а также осажденных из коллоидных растворов наночастиц Ag и нанокомпозитов ZnO/Ag на их основе. По результатам исследований вольт-амперных и вольт-фарадных характеристик проведен анализ электронных и электрических параметров массивов ZnO и нанокомпозитов ZnO/Ag. Определены оптимальные режимы изготовления стабильных и высокочувствительных по отношению к ультрафиолетовому излучению гетероструктур ZnO/Ag в качестве перспективных материалов фотодетекторов, га

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Sun, Yao, and Hong Wang. "Influence of Deposition Mode in Reactively Sputtered ZnO Underlayer on Thermal Stability of Thin Silver Films." Materials Science Forum 852 (April 2016): 1018–24. http://dx.doi.org/10.4028/www.scientific.net/msf.852.1018.

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The influence of deposition mode of the ZnO underlayer on the thermal stability of 20nm thick Ag films in the ZnO/Ag/SiN multilayer stacks were investigated. ZnO films were deposited by reactive sputtering of Zn target under different O2 flows corresponding to both transition and oxide modes. The films were characterized by sheet resistance, X-ray diffraction and SEM imaging before and after thermal annealing at 350°C, 400°C and 500°C, respectively. The results show that ZnO underlayer improves the thermal stability of the Ag films significantly. The ZnO deposition mode has huge impact on the

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Pradila, Mutia Hasmi, Jesi Pebralia, and Frastica Deswardani. "Synthesis and Characterization of ZnO/Ag Thin Films as Peat Water Degraders in East Tanjung Jabung Regency, Jambi." Journal BiGME 2, no. 1 (2022): 1–7. http://dx.doi.org/10.22437/bigme.v2i1.31178.

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Telah dilakukan sintesis dan karakterisasi lapisan tipis ZnO/Ag dengan teknik doctor blade sebagai aplikasi fotokatalis, pendegradasi air Gambut di Kabupaten Tanjung Jabung Timur. Bahan utama dalam pembuatan lapisan tipis adalah Zinc Acetat merck dan AgNO3 sebagai bahan utama Ag. Lapisan tipis di buat dengan variasi doping Ag 0%, 2%, 5%, dan 7%. Sintesis ZnO/Ag menggunakan metode sol-gel dan pembuatan lapisan tipis dengan teknik doctor blade. Hasil karakterisasi UV-Vis menunjukan nilai band gap ZnO/Ag secara berturut-turut yaitu sebesar 3,25 eV, 3,00 eV, 2,65 eV, 2,85 eV. Artinya band gap ener

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Masa, Abdulhakim, Nureeyah Jehsoh, Sawitree Dueramae, and Nabil Hayeemasae. "Boosting the Antibacterial Performance of Natural Rubber Latex Foam by Introducing Silver-Doped Zinc Oxide." Polymers 15, no. 4 (2023): 1040. http://dx.doi.org/10.3390/polym15041040.

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Natural rubber (NR) latex foam is one of the rubber products that are increasingly in demand in the market. This is simply because of its lightweight, good thermal insulation, and resilience. The applications of NR latex foam are mostly for pillows and mattresses. This has resulted in these products requiring antibacterial performance which is very important for the safety of the end-users. In this study, the antibacterial NR latex foam was prepared by incorporating the silver-doped zinc oxide (Ag-doped ZnO) into the NR latex foam. Ag-doped ZnO was prepared by microwave-assisted method and the

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Alzahrani, Elham A., Arshid Nabi, Majid Rasool Kamli, et al. "Facile Green Synthesis of ZnO NPs and Plasmonic Ag-Supported ZnO Nanocomposite for Photocatalytic Degradation of Methylene Blue." Water 15, no. 3 (2023): 384. http://dx.doi.org/10.3390/w15030384.

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Removing organic pollutants, textile dyes, and pharmaceutical wastes from the water bodies has become an essential requirement for a safe environment. Therefore, the present study aimed to prepare semiconductor zinc oxide nanoparticles (ZnO NPs) and plasmonic Ag-supported ZnO nanocomposite (ZnO–Ag) using an environmentally friendly bio-approach as an alternative to hazardous synthesis approaches. ZnO NPs and ZnO–Ag nanocomposite were characterized by using UV–Vis diffuse reflectance spectroscopy (UV–DRS) (the Ag-supported ZnO nanocomposite exhibited an absorption band between 450–550 nm, attri

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Li, Juan, Jian Yan, Chengzhan Liu, et al. "Manipulation on ZnO heterostructures: from binary ZnO–Ag to ternary ZnO–Ag–polypyrrole." CrystEngComm 16, no. 48 (2014): 10943–48. http://dx.doi.org/10.1039/c4ce01551g.

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A ternary composite ZnO–Ag–polypyrrole was synthesized through a fast reaction between zinc acetate and hexamethylenetetramine followed by an in situ surface polymerization process. The sample exhibited a superior catalytic performance in the degradation of methylene blue under both UV irradiation and visible light.

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