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Journal articles on the topic 'Cu2O NPs'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Botsa, Sathish Mohan, Ramadevi Dharmasoth, and Keloth Basavaiah. "A Facile Synthesis of Cu2O and CuO Nanoparticles Via Sonochemical Assisted Method." Current Nanoscience 15, no. 2 (2018): 209–13. http://dx.doi.org/10.2174/1573413714666180530085447.

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Background: During past two decades, functional nanomaterials have received great attention for many technological applications such as catalysis, energy, environment, medical and sensor due to their unique properties at nanoscale. However, copper oxide nanoparticles (NPs) such as CuO and Cu2O have most widely investigated for many potential applications due to their wide bandgap, high TC, high optical absorption and non-toxic in nature. The physical and chemical properties of CuO and Cu2O NPs are critically depending on their size, morphology and phase purity. Therefore, lots of efforts have

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S, Ananda, Shobha G, Shashidhara KS, and Vishwaprakash Mahadimane. "Nano-cuprous oxide enhances seed germination and seedling growth in Lycopersicum esculentum plants." Journal of Drug Delivery and Therapeutics 9, no. 2 (2019): 296–302. http://dx.doi.org/10.22270/jddt.v9i2.2554.

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This study was carried out to determine the influence of cuprous oxide nanoparticles (Cu2O NPs) biosynthesised from leaf extracts of Flacourtia montana on the tomato Lycioersicum esculentum seed germination, seedling growth and vigour index. Here we examined the promotory and phytotoxic effect of Cu2O NPs (0-160ppm) on tomato seeds resulted in dosage dependent response. The highest germination percentage (95%) was observed at 20ppm Cu2O NPs, however, above 20ppm Cu2O NPs, there is a reduction in the seed germination. The tomato seedlings showed increased root and shoot elongation up to 20ppm C

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Kariyawasam, M. I., and J. W. Hewage. "Synthesis and Characterization of ZnO/Cu<sub>2</sub>O and Co co-doped Ag-ZnO/Cu<sub>2</sub>O Nanoparticles with Possible Photovoltaic Applications." SLIIT Journal of Humanities and Sciences 4, no. 2 (2024): 17–25. http://dx.doi.org/10.4038/sjhs.v4i2.56.

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The Photovoltaics phenomenon is one of the major turning points in the battle against the depletion of fossil fuels. Sunlight is the main resource in photovoltaics, but there remains a quest to harvest it efficiently to generate electricity. This study is focused on designing basic, cost-effective prototype solar cells using ZnO/Cu2O nanoparticles (NPs) and Co(cobalt) co-doped Ag-ZnO/Cu2O NPs under normal university laboratory conditions. ITO-coated glass was used as the substrate of the solar cell and a modified low-temperature chemical bath deposition method was used for fabrication. Both Zn

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Lastovina, Tatiana, Andriy Budnyk, Gevorg Khaishbashev, Egor Kudryavtsev, and Alexander Soldatov. "Copper-based nanoparticles prepared from copper (II) acetate bipyridine complex." Journal of the Serbian Chemical Society 81, no. 7 (2016): 751–62. http://dx.doi.org/10.2298/jsc151211036l.

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We report the synthesis of CuO, Cu/Cu2O and Cu2O/CuO nanoparticles (NPs) from the single copper (II) acetate bipyridine complex by three different methods:microwave-assisted, solvothermal and borohydride. Presence of bipyridine ligand in the copper complex would impose no need in additional stabilization during synthesis. The phases of formed NPs were identified by X-ray diffraction. CuO NPs of ~11 nm were obtained via solvothermal synthesis from alkaline solution at 160?C. The Cu/Cu2O NPs of ~80 nm were produced via microwave-assisted polyol procedure at 185-200?C, where ethylene glycol can p

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Nga, Dinh Thi, Dang Thi Thuy Nhung, Tran Thi Thanh Ngoc, Phan Dinh Tuan, and Nguyen Quoc Hien. "Investigation of acute toxicity of composite Cu₂O NPs/Diatomite on white mice." Vietnam Journal of Chemistry 59, no. 4 (2021): 446–50. http://dx.doi.org/10.1002/vjch.202000170.

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AbstractCu2O NPs/diatomite is a composite material synthesized by chemical reduction method of Cu2+ ion adsorbed on diatomite. Cu2O NPs/diatomite is capable of adsorption of pollutants and microbial treatment, for aquaculture water treatment applications. The study focused on the acute toxicity determination of Cu2O NPs/diatomite material on Swiss white mice by oral tests. The results showed that Cu2O NPs/diatomite was almost non‐toxic with a test dose of 2,000 mg/kg of mice body weight, LD50 could not be determined. Monitoring the mice's activity after 14 days, the mice have normal activities

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Duzhyi, Igor, Petro Myronov, Tetiana Ivakhniuk, Roman Pshenychnyi, Oleksandr Bidakov, and Viktoriia Holubnycha. "ANTIBACTERIAL AND ANTIBIOFILM ACTIVITY OF CU/CU2O NPS AGAINST MULTIDRUG-RESISTANT BACTERIA." Eastern Ukrainian Medical Journal 12, no. 4 (2024): 914–27. https://doi.org/10.21272/eumj.2024;12(4):914-927.

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Introduction. Multidrug-resistant (MDR) bacteria are very dangerous and represent a major problem in all areas of healthcare: they often cause diseases that cannot be treated with antibiotics, which leads to long-term ineffective treatment, complications, and high treatment costs. Searching for new antimicrobials is one of the key components of a successful fight against infections caused by MDR. This study was designed to elucidate the antimicrobial and antibiofilm activities of copper/copper oxide nanoparticles (Cu/Cu2O NPs) against MDR bacteria. Methods. Cubic Cu/Cu2O NPs were synthesized b

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Behera, M., and G. Giri. "Green synthesis and characterization of cuprous oxide nanoparticles in presence of a bio-surfactant." Materials Science-Poland 32, no. 4 (2014): 702–8. http://dx.doi.org/10.2478/s13536-014-0255-4.

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AbstractHerein, we report a facile green synthesis of Cu2O nanoparticles (NPs) using copper sulfate as precursor salt and hydrazine hydrate as reducing agent in presence of bio-surfactant (i.e. leaves extract of arka — a perennial shrub) at 60 to 70 °C in an aqueous medium. A broad band centered at 460 nm in absorption spectrum reveals the formation of surfactant stabilized Cu2O NPs. X-ray diffraction pattern of the surfactant stabilized NPs suggests the formation of only Cu2O phase in assistance of a bio-surfactant with the crystallite size of ∼8 nm. A negative zeta potential of −12 mV at 8.0

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Singh, Avinash, Asar Ahmed, Kashi N. Prasad, et al. "Antibiofilm and Membrane-Damaging Potential of Cuprous Oxide Nanoparticles against Staphylococcus aureus with Reduced Susceptibility to Vancomycin." Antimicrobial Agents and Chemotherapy 59, no. 11 (2015): 6882–90. http://dx.doi.org/10.1128/aac.01440-15.

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ABSTRACTThe antimicrobial effects of copper ions and salts are well known, but the effects of cuprous oxide nanoparticles (Cu2O-NPs) on staphylococcal biofilms have not yet been clearly revealed. The present study evaluated Cu2O-NPs for their antibacterial and antibiofilm activities against heterogeneous vancomycin-intermediateStaphylococcus aureus(hVISA) and vancomycin-intermediateS. aureus(VISA). Nanoscaled Cu2O, generated by solution phase technology, contained Cu2O octahedral nanoparticles. Field emission electron microscopy demonstrated particles with sizes ranging from 100 to 150 nm. Cu2

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Dai, Zhikuang, Ailing Yang, Xichang Bao, and Renqiang Yang. "Facile Non-Enzymatic Electrochemical Sensing for Glucose Based on Cu2O–BSA Nanoparticles Modified GCE." Sensors 19, no. 12 (2019): 2824. http://dx.doi.org/10.3390/s19122824.

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Transition-metal nanomaterials are very important to non-enzymatic glucose sensing because of their excellent electrocatalytic ability, good selectivity, the fact that they are not easily interfered with by chloride ion (Cl−), and low cost. However, the linear detection range needs to be expanded. In this paper, Cu2O–bovine serum albumin (BSA) core-shell nanoparticles (NPs) were synthesized for the first time in air at room temperature by a facile and green route. The structure and morphology of Cu2O–BSA NPs were characterized. The as-prepared Cu2O–BSA NPs were used to modify the glassy carbon

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Paramasivam, Sutha, Sathishkumar Chidambaram, Palanisamy Karumalaiyan, et al. "Phytogenic Synthesis of Cuprous and Cupric Oxide Nanoparticles Using Black jack Leaf Extract: Antibacterial Effects and Their Computational Docking Insights." Antibiotics 13, no. 11 (2024): 1088. http://dx.doi.org/10.3390/antibiotics13111088.

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Background: Green synthesized nanoparticles (NPs) have gained increasing popularity in recent times due to their broad spectrum of antimicrobial properties. This study aimed to develop a phytofabrication approach for producing cuprous (Cu2O) and cupric oxide (CuO) NPs using a simple, non-hazardous process and to examine their antimicrobial properties. Methods: The synthesis employed Bidens pilosa plant extract as a natural reducing and stabilizing agent, alongside copper chloride dihydrate as the precursor. The biosynthesized NPs were characterized through various techniques, including X-ray d

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Hesabizadeh, Tina, Kidon Sung, Miseon Park, et al. "Synthesis of Antibacterial Copper Oxide Nanoparticles by Pulsed Laser Ablation in Liquids: Potential Application against Foodborne Pathogens." Nanomaterials 13, no. 15 (2023): 2206. http://dx.doi.org/10.3390/nano13152206.

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Spherical copper oxide nanoparticles (CuO/Cu2O NPs) were synthesized by pulsed laser ablation in liquids (PLAL). The copper target was totally submerged in deionized (DI) water and irradiated by an infrared laser beam at 1064 nm for 30 min. The NPs were then characterized by dynamic light scattering (DLS) and atomic emission spectroscopy (AES) to determine their size distribution and concentration, respectively. The phases of copper oxide were identified by Raman spectroscopy. Then, the antibacterial activity of CuO/Cu2O NPs against foodborne pathogens, such as Salmonella enterica subsp. enter

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Nguyen, Xuan Thai, Phi Hung Dao, Thuy Chinh Nguyen, et al. "Assessing the Antifouling Effectiveness of the Novel Organic Coating for Adherent Species in the Seawater of the coastal area of Ha Long City, Quang Ninh Province (Vietnam)." Vietnam Journal of Marine Science and Technology 24, no. 2 (2024): 195–204. http://dx.doi.org/10.15625/1859-3097/18436.

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This paper presents the results of a 12-month testing period in seawater at Vung Oan, Ha Long City marine area, Quang Ninh Province (Vietnam), assessing the fouling organism’s removal effectiveness of polysiloxane (PS)/Ag-Zn zeolite/Cu2O nanocomposite coatings. This experiment is a substantial base to evaluate impact of Ag-Zn/zeolite and Cu2O nanoparticles (NPs) on growth of bacteria and macro-fouling organisms compared to a control coating without the above additives. The results indicated that the coating loaded with Ag-Zn/zeolite and Cu2O NPs exhibited a lower bacterial count than the coati

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Yuan, Zitong, Yiwei Li, Yuke He, Kun Qian, and Yongqiang Zhang. "Differential Analysis of Three Copper-Based Nanomaterials with Different Morphologies to Suppress Alternaria alternata and Safety Evaluation." International Journal of Molecular Sciences 24, no. 11 (2023): 9673. http://dx.doi.org/10.3390/ijms24119673.

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The overuse of copper-based fertilizers and pesticides over the last few decades has resulted in detrimental risks to our environment. Nano-enabled agrichemicals with a high effective utilization ratio have shown great potential for maintaining or minimizing environmental issues in agriculture. Copper-based nanomaterials (Cu-based NMs) serve as a promising alternative to fungicides. Three types of Cu-based NMs with different morphologies were analyzed for their different antifungal effects on Alternaria alternata in this current study. Compared to commercial copper hydroxide water power (Cu(OH

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Magerramov, A. M., N. I. Kurbanova, M. N. Bayramov, N. A. Alimirzoyeva, S. K. Ragimova, and A. N. Nabiyeva. "Features of radiothermoluminescence of polypropylene and ethylene propylenediene elastomer SKEPT-4044 compositions with nanoscale metal-containing fillers." Physics and Chemistry of Materials Treatment, no. 3 (2020): 66–73. http://dx.doi.org/10.30791/0015-3214-2020-3-66-73.

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Using radiothermoluminescence (RTL), the molecular mobility features in the temperature range of 77-300 K were studied for the polypropylene (PP)/ethylene propylene diene elastomer SKEPT-4044 with NiO, Cu2O and Fe3O4 nanoparticles (NPs) based on ABS-acrylonitrile butadiene or SCS-divinyl styrene matrices. It has been shown that the introduction of nanofillers in PP significantly affects the nature and temperature of γ- and β-relaxation processes, while the region of manifestation of the β-process noticeably shifts to the region of low temperatures. Composites with Cu2O NPs have a higher β-tran

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Rizo, Juan, David Díaz, Benito Reyes-Trejo, and M. Josefina Arellano-Jiménez. "Cu2O nanoparticles for the degradation of methyl parathion." Beilstein Journal of Nanotechnology 11 (October 12, 2020): 1546–55. http://dx.doi.org/10.3762/bjnano.11.137.

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Methyl parathion (MP) is one of the most neurotoxic pesticides. An inexpensive and reliable one-step degradation method of MP was achieved through an aqueous suspension of copper(I) oxide nanoparticles (NPs). Three different NPs sizes (16, 29 and 45 nm), determined with X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM), were synthesized using a modified Benedict’s reagent. 1H nuclear magnetic resonance (NMR) results show that the hydrolytic degradation of MP leads to the formation of 4-nitrophenol (4-NPh) as the main product. While the P=S bond of MP becomes

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Regmi, Amrit, Janak Bhandari, Sitaram Bhattarai, and Surendra K. Gautam. "Synthesis, Characterizations and Antimicrobial Activity of Cuprous Oxide (Cu2O) Nanoparticles." Journal of Nepal Chemical Society 40 (December 31, 2019): 5–10. http://dx.doi.org/10.3126/jncs.v40i0.27271.

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Cuprous oxide nanoparticles were synthesized by the reduction of copper sulphate pentahydrate salt at different concentration using sodium borohydride as a reducing agent, polyethylene glycol-6000 as a stabilizer by simple, chemical co-precipitation methods and the effect of concentration on particle size were also studied. The crystalline size and phase of Cu2O nanoparticles (NPs) were authenticated by X-ray diffraction (XRD), morphology and structure by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and elemental analysis was carried out by energy-dispersive X-ra

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Zeghdi, Saad, Salah Eddine Laouini, Hamdi Ali Mohammed, et al. "Improved Synthesis of Cu2O NPs and Ascorbic Acid-Modified Derivatives for Adsorption of Brilliant Cresyl Blue: Surface and Reusability Studies." Materials 17, no. 10 (2024): 2358. http://dx.doi.org/10.3390/ma17102358.

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This study addresses the critical need for efficient and recyclable photocatalysts for water treatment applications by presenting a novel approach for the synthesis and characterization of copper (I) oxide (Cu2O) nanoparticles modified with ascorbic acid (Cu2O/AA). The motivation for this research stems from the increasing concern about environmental pollution caused by organic pollutants, such as Brilliant Cresyl Blue (BCB), and the necessity for sustainable solutions to mitigate this issue. Through comprehensive characterization techniques including Ultraviolet–Visible spectroscopy (UV-Vis),

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Tomšič, Brigita, Darka Marković, Vukašin Janković, et al. "Biodegradation of cellulose fibers functionalized with CuO/Cu2O nanoparticles in combination with polycarboxylic acids." Cellulose 29, no. 1 (2021): 287–302. http://dx.doi.org/10.1007/s10570-021-04296-6.

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AbstractSustainable biodegradation of cellulose fibers is critical for composting after the end of a product’s life. In this study, we aimed at investigating the effect of in situ synthesized CuO/Cu2O nanoparticles (NPs) with biocidal concentration on the biodegradation behavior of cotton fibers pretreated with 1,2,3,4-butanetetracarboxylic acid (BTCA) and succinic acid (SUC). Biodegradation of the fibers was evaluated by soil burial tests in garden soil and in model compost after different soil burial times. The results showed that the application of BTCA, SUC, and CuO/Cu2O NPs did not affect

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Havryliuk, Olesia, Garima Rathee, Jeniffer Blair, et al. "Unveiling the Potential of CuO and Cu2O Nanoparticles against Novel Copper-Resistant Pseudomonas Strains: An In-Depth Comparison." Nanomaterials 14, no. 20 (2024): 1644. http://dx.doi.org/10.3390/nano14201644.

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Four novel Pseudomonas strains with record resistance to copper (Cu2+) previously isolated from ecologically diverse samples (P. lactis UKR1, P. panacis UKR2, P. veronii UKR3, and P. veronii UKR4) were tested against sonochemically synthesised copper-oxide (I) (Cu2O) and copper-oxide (II) (CuO) nanoparticles (NPs). Nanomaterials characterisation by X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and High-Resolution Transmission Electron Microscopy (HRTEM) confirmed the synthesis of CuO and Cu2O NPs. CuO NPs exhibited better pe

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Abidi, Mabrouk, Amine Aymen Assadi, Salma Aouida, et al. "Photocatalytic Activity of Cu2O-Loaded TiO2 Heterojunction Composites for the Simultaneous Removal of Organic Pollutants and Bacteria in Indoor Air." Catalysts 15, no. 4 (2025): 360. https://doi.org/10.3390/catal15040360.

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This research investigates the enhanced photocatalytic activity of cuprous oxide (Cu2O) nanoparticles (NPs)-titanium dioxide (TiO2) nanotube (NT) composites for air purification, focusing on the removal of volatile organic compounds (VOCs) and Escherichia coli (E. coli) bacteria under simulated sunny light. Cu2O-NPs were successfully deposited onto TiO2-NTs via the successive ionic layer adsorption and reaction method. The resulting p- and n-type semiconductor heterojunction nanocomposites were characterized using various techniques, including scanning electron microscopy, transmission electro

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H, R. Raveesha, and Pramila L. Esther. "Green Synthesis and Characterization of Copper Nanoparticles Using Urginea wightii and its Biological Activities." Indian Journal of Science and Technology 15, no. 22 (2022): 1075–83. https://doi.org/10.17485/IJST/v15i22.330.

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Abstract <strong>Objectives:</strong> To investigate the potential of copper and copper oxide nanoparticles synthesized from the bulb extract of Urginea wightii (U. wightii). <strong>Methods:</strong> Copper and copper oxide nanoparticles (Cu-Cu2O NPs) were synthesized by the reduction method and were characterized by using UV-vis spectroscopy, FTIR, XRD, SEM, and EDX. Antioxidant activity was calculated by DPPH and ABTS method. In vitro antimicrobial activity by agar well diffusion method and cytotoxic activities by MTT assay. <strong>Findings:</strong> The presence o

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Ning, Jingheng, Quanguo He, Xin Luo, et al. "Rapid and Sensitive Determination of Vanillin Based on a Glassy Carbon Electrode Modified with Cu2O-Electrochemically Reduced Graphene Oxide Nanocomposite Film." Sensors 18, no. 9 (2018): 2762. http://dx.doi.org/10.3390/s18092762.

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A facile cuprous oxide nanoparticles functionalized electro-reduced graphene oxide modified glassy carbon electrode (denoted as Cu2O NPs-ERGO/GCE) was fabricated via a simple physical adsorption and electrochemical reduction approach. Cyclic voltammetry and second-order derivative linear scan voltammetry were used to investigate the electrocatalysis oxidation of vanillin on the Cu2O NPs-ERGO/GCE. The compound yielded a well-defined voltammetric response in 0.1 M H2SO4 at 0.916 V (vs. saturated calomel electrode (SCE)). A linear calibration graph was obtained in the concentration range of 0.1 μ

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Zaparoli, Hulder Henrique, Marcela de Oliveira, Paulo Noronha Lisboa-Filho, and Marina Piacenti-Silva. "Synthesis and characterization of copper (I) particles as contrast agents in magnetic resonance imaging." Peer Review 6, no. 2 (2024): 362–76. http://dx.doi.org/10.53660/prw-1777-3418.

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Recent studies have focused on the link between metals and neurodegenerative diseases like multiple sclerosis (MS), particularly emphasizing the role of copper (Cu). Essential for vital functions, Cu imbalances can contribute to MS-related neurodegeneration and cerebral lesions. Interestingly, Cu accumulation could be a potential biomarker in magnetic resonance image (MRI) for MS. This study aimed to obtain copper(I) oxide nanoparticles (Cu2O-NPs) and evaluate their effectiveness in MRI as contrast agents or MS biomarkers. These nanoparticles were synthesized using the sol-gel method and analy

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Quintero, Marcy, Marcela Manrique-Moreno, Henry Riascos, Ricardo A. Torres-Palma, Sandra Castro-Narvaez, and Yenny P. Ávila-Torres. "Laser Ablation for the Synthesis of Cu/Cu2O/CuO and Its Development as Photocatalytic Material for Escherichia coli Detoxification." International Journal of Molecular Sciences 25, no. 13 (2024): 6817. http://dx.doi.org/10.3390/ijms25136817.

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Advanced Oxidation Processes (AOPs) offer promising methods for disinfection by generating radical species like hydroxyl radicals, superoxide anion radicals, and hydroxy peroxyl, which can induce oxidative stress and deactivate bacterial cells. Photocatalysis, a subset of AOPs, activates a semiconductor using specific electromagnetic wavelengths. A novel material, Cu/Cu2O/CuO nanoparticles (NPs), was synthesized via a laser ablation protocol (using a 1064 nm wavelength laser with water as a solvent, with energy ranges of 25, 50, and 80 mJ for 10 min). The target was sintered from 100 °C to 800

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Park, Jeong Yeon, Siwoo Lee, Yangdo Kim, and Young Bok Ryu. "Antimicrobial Activity of Morphology-Controlled Cu2O Nanoparticles: Oxidation Stability under Humid and Thermal Conditions." Materials 17, no. 1 (2024): 261. http://dx.doi.org/10.3390/ma17010261.

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Metal oxides can be used as antimicrobial agents, especially since they can be fabricated into various forms such as films, masks, and filters. In particular, the durability of antimicrobial agents and the duration of their antimicrobial activity are important factors that determine their suitability for a specific purpose. These factors are related to the morphology and size of particles. The metal oxide Cu2O is often oxidized to CuO in various conditions, which reduces its antimicrobial activity. This study focused on the oxidation of nanoparticles of Cu2O with three morphologies, namely, sp

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Yu, Zhipeng, Huan Wu, Zhongshuang Xu, Zhimao Yang, Jian Lv, and Chuncai Kong. "Wearable Noninvasive Glucose Sensor Based on CuxO NFs/Cu NPs Nanocomposites." Sensors 23, no. 2 (2023): 695. http://dx.doi.org/10.3390/s23020695.

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Designing highly active material to fabricate a high-performance noninvasive wearable glucose sensor was of great importance for diabetes monitoring. In this work, we developed CuxO nanoflakes (NFs)/Cu nanoparticles (NPs) nanocomposites to serve as the sensing materials for noninvasive sweat-based wearable glucose sensors. We involve CuCl2 to enhance the oxidation of Cu NPs to generate Cu2O/CuO NFs on the surface. Due to more active sites endowed by the CuxO NFs, the as-prepared sample exhibited high sensitivity (779 μA mM−1 cm−2) for noninvasive wearable sweat sensing. Combined with a low det

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Alhumaimess, Mosaed S., Amr A. Essawy, Mahmoud M. Kamel, Ibrahim Hotan Alsohaimi, and Hassan M. A. Hassan. "Biogenic-Mediated Synthesis of Mesoporous Cu2O/CuO Nano-Architectures of Superior Catalytic Reductive towards Nitroaromatics." Nanomaterials 10, no. 4 (2020): 781. http://dx.doi.org/10.3390/nano10040781.

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Cu2O/CuO nano-architectures were prepared by biogenic-mediated synthesis using pomegranate seeds extract as the reducing/stabilizing mediator during an aqueous solution combustion process of the Cu2+ precursor. The fabricated Cu2O/CuO nanocomposite were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM) and nitrogen sorption. Nitrobenzene (NB) was applied a probe to test the catalytic activities of the fabricated Cu2O/CuO nanocomposite. The results indicated that p

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Du, Bui Duy, Dang Van Phu, Le Anh Quoc, and Nguyen Quoc Hien. "Synthesis and Investigation of Antimicrobial Activity of Cu2O Nanoparticles/Zeolite." Journal of Nanoparticles 2017 (January 9, 2017): 1–6. http://dx.doi.org/10.1155/2017/7056864.

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Cuprous oxide (Cu2O) nanoparticles in zeolite A were synthesized by two steps: (i) ion-exchange of copper ions into the zeolite and (ii) reduction of copper ions in cages of the zeolite by hydrazine hydrate in base medium. The Cu2O nanoparticles/zeolite product was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDX). The particle size of Cu2O nanoparticles was of 40 nm. The antibacterial activity of the as-synthesized Cu2O nanoparticles/zeolite against Escherichia coli was also investigated. Cu2O NPs/zeolite product c

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Giannousi, K., G. Sarafidis, S. Mourdikoudis, A. Pantazaki, and C. Dendrinou-Samara. "Selective Synthesis of Cu2O and Cu/Cu2O NPs: Antifungal Activity to Yeast Saccharomyces cerevisiae and DNA Interaction." Inorganic Chemistry 53, no. 18 (2014): 9657–66. http://dx.doi.org/10.1021/ic501143z.

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Chen, Lei, Huanhuan Sun, Yue Zhao, et al. "Plasmonic-induced SERS enhancement of shell-dependent Ag@Cu2O core–shell nanoparticles." RSC Advances 7, no. 27 (2017): 16553–60. http://dx.doi.org/10.1039/c7ra01187c.

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In this study, we designed shell-dependent Ag@Cu<sub>2</sub>O core–shell nanoparticles (NPs) for SERS study. Compared to Cu<sub>2</sub>O NPs, Ag@Cu<sub>2</sub>O core–shell NPs exhibited high SERS activity because of the localized surface plasmon resonance (LSPR) from Ag core.

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Zhu, Lu, David W. Pearson, Stéphane L. Benoit, et al. "Highly Efficient Antimicrobial Activity of CuxFeyOz Nanoparticles against Important Human Pathogens." Nanomaterials 10, no. 11 (2020): 2294. http://dx.doi.org/10.3390/nano10112294.

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The development of innovative antimicrobial materials is crucial in thwarting infectious diseases caused by microbes, as drug-resistant pathogens are increasing in both number and capacity to detoxify the antimicrobial drugs used today. An ideal antimicrobial material should inhibit a wide variety of bacteria in a short period of time, be less or not toxic to normal cells, and the fabrication or synthesis process should be cheap and easy. We report a one-step microwave-assisted hydrothermal synthesis of mixed composite CuxFeyOz (Fe2O3/Cu2O/CuO/CuFe2O) nanoparticles (NPs) as an excellent antimi

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He, Quanguo, Jun Liu, Yaling Tian, et al. "Facile Preparation of Cu2O Nanoparticles and Reduced Graphene Oxide Nanocomposite for Electrochemical Sensing of Rhodamine B." Nanomaterials 9, no. 7 (2019): 958. http://dx.doi.org/10.3390/nano9070958.

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In this paper, the preparation, characterization, and electrochemical application of Cu2O nanoparticles and an electrochemical reduced graphene oxide nanohybrid modified glassy carbon electrode (denoted as Cu2O NPs‒ERGO/GCE) are described. This modified electrode was used as an electrochemical sensor for the catalytic oxidation of rhodamine B (RhB), and it exhibited an excellent electrochemical performance for RhB. The oxidation potential of RhB was decreased greatly, and the sensitivity to detect RhB was improved significantly. Under optimum conditions, a linear dynamic range of 0.01–20.0 μM

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Flohre, Jan, Maurice Nuys, Christine Leidinger, Florian Köhler, and Reinhard Carius. "CuO and Cu2O Nanoparticles for Thin Film Photovoltaics." MRS Proceedings 1538 (2013): 197–202. http://dx.doi.org/10.1557/opl.2013.1025.

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ABSTRACTLaser annealing experiments on commercially available phase pure tenorite (CuO) nanoparticles (NPs) were performed in air and nitrogen atmosphere to improve the structural and electronic properties, with respect to their suitability for photovoltaic applications. The particles exhibit size variations from about 30 nm to 100 nm. The influence of the thermal treatment is investigated by photoluminescence (PL) and Raman spectroscopy. Annealing of the particles in air by a laser treatment improved the material quality by defect reduction. Additional laser annealing in N2 atmosphere leads t

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Losada-Garcia, Noelia, Jannier Carranza, and Jose M. Palomo. "Graphene-TLL-Cu2ONPs Hybrid as Highly Efficient Catalyst for Degradation of Organic Compounds." Nanomaterials 13, no. 3 (2023): 449. http://dx.doi.org/10.3390/nano13030449.

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In this work, Cu2O nanoparticles (NPs) were created in situ on graphene functionalized with Thermomyces lanuginosus lipase (G@TLL) where site-oriented supported TLL acted as template and binder in the presence of copper salt by tailorable synthesis under mild conditions, producing a heterogeneous catalyst. Cu2O NPs were confirmed by XRD and XPS. The TEM microscopy showed that the nanoparticles were homogeneously distributed over the G@TLL surface with sizes of 53 nm and 165 nm. This G@TLL-Cu2O hybrid was successfully used in the degradation of toxic organic compounds such as trichloroethylene

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Haque, Md Ashraful, Md Kaium Hossain, Md Ashraful Islam Molla, Mithun Sarker, Shaikat Chandra Dey, and Md Ashaduzzaman. "FACILE FABRICATION OF COPPER OXIDE NANOPARTICLES FOR ANTIMICROBIAL ACTIVITY." Journal CleanWAS 5, no. 1 (2021): 27–30. http://dx.doi.org/10.26480/jcleanwas.01.2021.27.30.

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Copper Oxide nanoparticles (NPs) have shown great acceptance in the antimicrobial application owing to their low toxicity and high surface to charge ratio. In this study, copper oxide NPs (represented as S-1, S-2 and S-3) were prepared by a simple and cost-effective thermal approach in three different environments. Fabricated NPs were characterized using x-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible (UV-Vis) spectroscopy and Fourier transform infrared spectroscopy (FTIR) technique. The XRD patterns revealed that the synthesized S-2 was of pure Cu2O phase whil

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He, Lang, Wenyuan Zhang, Kristin Zhao, Sheng Liu, and Yan Zhao. "Core–shell Cu@Cu₂O nanoparticles embedded in 3D honeycomb-like N-doped graphitic carbon for photocatalytic CO₂ reduction." Journal of Materials Chemistry A 10, no. 9 (2022): 4758–69. http://dx.doi.org/10.1039/d1ta10514k.

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Losada-Garcia, Noelia, Alba Rodriguez-Otero, Clara Ortega-Nieto, Ariane Azarmi, and Jose M. Palomo. "Catalase Like-Activity of Metal NPs–Enzyme Biohybrids." Applied Nano 3, no. 3 (2022): 149–59. http://dx.doi.org/10.3390/applnano3030011.

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In this work, an efficient synthesis of bionanohybrids as artificial metalloenzymes (Cu, Pd, Ag, Mn) based on the application of an enzyme as a scaffold was described. Here we evaluated the effect of changing the metal, pH of the medium, and the amount of enzyme in the synthesis of these artificial metalloenzymes, where changes in the metal species and the size of the nanoparticles occur. These nanozymes were applied in the degradation of hydrogen peroxide for their evaluation as mimetics of catalase activity, the best being the Mn@CALB-H2O, which presented MnO2 nanostructures, with three-fold

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Ning, Jingheng, Quanguo He, Xin Luo, et al. "Determination of Uric Acid in Co-Presence of Dopamine and Ascorbic Acid Using Cuprous Oxide Nanoparticle-Functionalized Graphene Decorated Glassy Carbon Electrode." Catalysts 8, no. 10 (2018): 407. http://dx.doi.org/10.3390/catal8100407.

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Cuprous oxide nanoparticles (Cu2O NPs) were dispersed into a graphene oxide (GO) solution to form a homogeneous Cu2O-GO dispersion. After this, the cuprous oxide nanoparticles were functionalized to electrochemically reduce the graphene oxide decorated glassy carbon electrode (Cu2O-ErGO/GCE). This was prepared by coating the Cu2O-GO dispersion onto the surface of the glassy carbon electrode (GCE), which was followed by a potentiostatic reduction process. An irreversible two-electron reaction of uric acid (UA) was observed at the voltammetric sensor. Moreover, the high concentrations of dopamin

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Zhu, Jialei, Fuqin Wang, Jiaying Chen, and Chang Liu. "An efficient biosensor using a functionalized microneedle of Cu₂O-based CoCu-LDH for glucose detection." RSC Advances 13, no. 46 (2023): 32558–66. http://dx.doi.org/10.1039/d3ra05957j.

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Cauliflower-type Cu2O NPs cluster was directly modified on the tip surface of the ANE by electrochemical deposition, and then this pre-formed cuprous basis was used to further prepare the neatly arranged CoCu-LDH nanosheets.

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Wang, Chao, Yiqian Wang, Xuehua Liu, Feiyu Diao, Lu Yuan, and Guangwen Zhou. "Novel hybrid nanocomposites of polyhedral Cu2O nanoparticles–CuO nanowires with enhanced photoactivity." Phys. Chem. Chem. Phys. 16, no. 33 (2014): 17487–92. http://dx.doi.org/10.1039/c4cp01696c.

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Rabbani, Abdul Waheed, Gul Naz, Elyor Berdimurodov, Basant Lal, Aigul Baimagambetova Sailauovna, and Ahmad Hosseini Bandegharaei. "Visible-Light-driven Photocatalytic Properties of Copper(I) Oxide (Cu2O) and Its Graphene-based Nanocomposites." Baghdad Science Journal 20, no. 3(Suppl.) (2023): 1064. http://dx.doi.org/10.21123/bsj.2023.8476.

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In this study, an improved process was proposed for the synthesis of structure-controlled Cu2O nanoparticles, using a simplified wet chemical method at room temperature. A chemical solution route was established to synthesize Cu2O crystals with various sizes and morphologies. The structure, morphology, and optical properties of Cu2O nanoparticles were analyzed by X-ray diffraction, SEM (scanning electron microscope), and UV-Vis spectroscopy. By adjusting the aqueous mixture solutions of NaOH and NH2OH•HCl, the synthesis of Cu2O crystals with different morphology and size could be realized. Str

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Kumar, Mukesh, Himani Chauhan, Biswarup Satpati, and Sasanka Deka. "Yolk Type Asymmetric Ag–Cu2O Hybrid Nanoparticles on Graphene Substrate as Efficient Electrode Material for Hybrid Supercapacitors." Zeitschrift für Physikalische Chemie 233, no. 1 (2018): 85–104. http://dx.doi.org/10.1515/zpch-2017-1067.

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Abstract Yolk type asymmetric Ag–Cu2O hybrid nanostructures are in situ synthesized on reduced graphene oxide (RGO) sheets for the first time under one pot hydrothermal mild reaction condition. The co-reduction method provides a facile and straight forward approach to metal/metal oxide hybrid NPs growth on graphene nanosheets and the nano heterostructures are found to be homogeneously distributed over graphene sheets with unique yolk type morphology forming Ag–Cu2O/RGO nanocomposite (NC). The supercapacitor performances of the NCs are evaluated in aqueous 6.0 M KOH by cyclic voltammetry (CV),

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Krobthong, S., K. Umma, T. Rungsawang, et al. "Synthesis and characterization of Cu2O and CuO nanoparticles in distilled water using electrochemical process." Digest Journal of Nanomaterials and Biostructures 20, no. 1 (2025): 13–21. https://doi.org/10.15251/djnb.2025.201.13.

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The synthesis of metal oxide semiconductors has garnered considerable attention due to their wide-ranging applications in fields such as electronics, optoelectronics, catalysis, and photovoltaics. This study presents the synthesis of copper oxide nanoparticles (NPs) in distilled water through a two-probe electrochemical process at varying applied voltages. The synthesized copper oxide NPs exhibited a color spectrum from light to dark brown, suggesting the formation of copper oxide in the distilled water. Preliminary observations utilizing the Tyndall effect with a red laser light confirmed the

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Borah, Rupom, Eramoni Saikia, Sankar Jyoti Bora, and Bolin Chetia. "On-water synthesis of phenols using biogenic Cu2O nanoparticles without using H2O2." RSC Advances 6, no. 102 (2016): 100443–47. http://dx.doi.org/10.1039/c6ra22972g.

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Singh, K. S., A. Khare, and A. K. Sharma. "Effect of uniform magnetic field on laser-produced Cu plasma and the deposited particles on the target surface." Laser and Particle Beams 35, no. 2 (2017): 352–61. http://dx.doi.org/10.1017/s0263034617000271.

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AbstractLaser-produced copper plasma in the presence of variable transverse external magnetic field in air is investigated using optical emission spectroscopy. As the magnetic field increases from 0 to 0.5 T, the intensity of Cu I lines initially increases and then decreases slightly at a 0.5 T. The maximum intensity enhancement of all five Cu I lines occurs at a magnetic field of 0.3 T. The increase in intensity is attributed to an increase in the electron impact excitation of Cu. With increase in magnetic field, the electron density and temperature were found to increase due to increase in t

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Errokh, Amira, Wafa Cheikhrouhou, Ana Maria Ferraria, Ana Maria Botelho do Rego, and Sami Boufi. "Cotton decorated with Cu2O-Ag and Cu2O-Ag-AgBr NPs via an in-situ sacrificial template approach and their antibacterial efficiency." Colloids and Surfaces B: Biointerfaces 200 (April 2021): 111600. http://dx.doi.org/10.1016/j.colsurfb.2021.111600.

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Yoo, Il-Han, Shankara Sharanappa Kalanur, Kiryung Eom, et al. "Plasmon-enhanced ZnO nanorod/Au NPs/Cu2O structure solar cells: Effects and limitations." Korean Journal of Chemical Engineering 34, no. 12 (2017): 3200–3207. http://dx.doi.org/10.1007/s11814-017-0222-y.

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Pham, Van Viet, Dai Phat Bui, Hong Huy Tran, et al. "Photoreduction route for Cu2O/TiO2 nanotubes junction for enhanced photocatalytic activity." RSC Advances 8, no. 22 (2018): 12420–27. http://dx.doi.org/10.1039/c8ra01363b.

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Good photocatalytic performance is demonstrated by Cu<sub>2</sub>O NPs directly loaded onto hydrothermally synthesized TiO<sub>2</sub> NTs via photoreduction method conducted with a lower power UV lamp at room temp. This is due to narrowing bandgap and forming an internal electric field.

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Pratibha, Garg Sangeeta, and Kumar Ratan Jatinder. "Degradation of 4-amino pyridine onto cuprous oxide nanoparticles synthesized from Tabernaemontana divaricate extract." Journal of Indian Chemical Society Vol. 97, Mar 2020 (2020): 320–25. https://doi.org/10.5281/zenodo.5653018.

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Department of Chemical Engineering, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar-144 011, Punjab, India <em>E-mail:</em> gargs@nitj.ac.in <em>Manuscript received online 03 December 2019, revised and accepted 27 December 2019</em> In the present study, Cu<sub>2</sub>O nanoparticles has been synthesized from<em> Tabernaemontana</em> divaricate leaves extract and were analyzed using various characterization techniques UV-Vis, FT-IR and AFM. FT-IR spectra displayed the presence of protein/ enzymes along with the aromatics in the spectra of Cu<sub>2</sub>O NPs that revealed the fo

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Piszter, Gábor, Krisztián Kertész, Dávid Kovács, et al. "Spectral Engineering of Hybrid Biotemplated Photonic/Photocatalytic Nanoarchitectures." Nanomaterials 12, no. 24 (2022): 4490. http://dx.doi.org/10.3390/nano12244490.

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Solar radiation is a cheap and abundant energy for water remediation, hydrogen generation by water splitting, and CO2 reduction. Supported photocatalysts have to be tuned to the pollutants to be eliminated. Spectral engineering may be a handy tool to increase the efficiency or the selectivity of these. Photonic nanoarchitectures of biological origin with hierarchical organization from nanometers to centimeters are candidates for such applications. We used the blue wing surface of laboratory-reared male Polyommatus icarus butterflies in combination with atomic layer deposition (ALD) of conforma

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