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Journal articles on the topic 'Cu/SiO2'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Boccuzzi, F., S. Coluccia, G. Martra, and N. Ravasio. "Cu/SiO2 and Cu/SiO2–TiO2 Catalysts." Journal of Catalysis 184, no. 2 (1999): 316–26. http://dx.doi.org/10.1006/jcat.1999.2428.

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2

Boccuzzi, F., G. Martra, C. Partipilo Papalia, and N. Ravasio. "Cu/SiO2 and Cu/SiO2–TiO2 Catalysts." Journal of Catalysis 184, no. 2 (1999): 327–34. http://dx.doi.org/10.1006/jcat.1999.2429.

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3

GUI, CHENGMEI, ZHENMING CHEN, CHENGUANG YAO, and GUISHENG YANG. "PREPARATION OF Cu-SiO2/PA12 COMPOSITE POWDERS BY ELECTROLESS PLATING FOR USE IN SLS PROCESSING." Surface Review and Letters 26, no. 09 (2019): 1950055. http://dx.doi.org/10.1142/s0218625x19500550.

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In this work, SiO2-encapsulated copper particles/PA12 (Cu-SiO2/PA12) composite powders were prepared by electroless composite plating, and the laser sintering behavior was investigated. Results showed that Cu, Cu2O, CuO, and SiO2 (Cu-SiO2) composite particles were plated on the surface of KH550-modified PA12 powders. The Cu-SiO2 particles existed independently on PA12 surface, and the size was around 200 nm. The melting temperature and crystallization temperature of Cu-SiO2/PA12 composite powders were 183∘C and 150∘C. The results indicate that the selective laser sintering (SLS) process involv

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4

Sato, Hisashi, and Yoshimi Watanabe. "Effects of SiO₂ Particles on Wear Behavior of Cu-SiO₂ Dispersion-Hardened Alloys." Materials Science Forum 561-565 (October 2007): 659–62. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.659.

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Effects of solid particles on wear behavior of dispersion-hardened alloy were investigated using Cu-SiO2 alloys containing 0.6vol.%SiO2, 1.2vol.%SiO2 and 1.7vol.%SiO2 particles. Wear tests were made using pin-on-disc type wear machine. Wear property of the Cu-SiO2 alloys is improved by increasing volume fraction of SiO2 particles. Moreover, wear amounts of Cu-SiO2 alloys increase with increasing the sliding distance, and then are saturated at exceeding about 1km. This is why that SiO2 particle improves the strength of Cu-SiO2 alloy, and that the work hardening occurs on worn surface. Wear-indu

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5

Tian, Qing, Junhui Li, Xiao Huiwei, and Can Zhou. "SiO2-coated Cu nanoparticle/epoxy resin composite and its application in the chip packaging field." High Performance Polymers 31, no. 4 (2018): 417–24. http://dx.doi.org/10.1177/0954008318781697.

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A silicon dioxide–copper (SiO2-Cu) epoxy resin composite material for chip packaging was made by a mechanical mixing method with epoxy resin as the base glue and SiO2 coated with nano-Cu (SiO2-Cu) particles as the filler. The dispersion of SiO2-Cu nanoparticles in epoxy resin was studied using scanning electron microscopy and transmission electron microscopy. Meanwhile, the effects of the filler on the coefficient of thermal conductivity, the coefficient of thermal expansion (CTE), and the mechanical properties of the composite material were also studied. The results show that SiO2-Cu nanopart

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6

A. Leon y Leon, Carlos, and M. Albert Vannice*. "Adsorption and catalytic properties of Pd/SiO2, Cu/SiO2, and Pd-Cu/SiO2 systems." Applied Catalysis 69, no. 1 (1991): 269–90. http://dx.doi.org/10.1016/s0166-9834(00)83307-2.

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7

A. Leon y Leon, Carlos, and M. Albert Vannice*. "Adsorption and catalytic properties of Pd/SiO2, Cu/SiO2, and Pd-Cu/SiO2 systems." Applied Catalysis 69, no. 1 (1991): 291–304. http://dx.doi.org/10.1016/s0166-9834(00)83308-4.

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8

A. Leon y Leon, Carlos, and M. Albert Vannice*. "Adsorption and catalytic properties of Pd/SiO2, Cu/SiO2, and Pd-Cu/SiO2 systems." Applied Catalysis 69, no. 1 (1991): 305–21. http://dx.doi.org/10.1016/s0166-9834(00)83309-6.

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9

Fisher, Ian A., and Alexis T. Bell. "A Mechanistic Study of Methanol Decomposition over Cu/SiO2, ZrO2/SiO2, and Cu/ZrO2/SiO2." Journal of Catalysis 184, no. 2 (1999): 357–76. http://dx.doi.org/10.1006/jcat.1999.2420.

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10

Ying, Juntao, Xueqing Han, Lei Ma, et al. "Effects of Basic Promoters on the Catalytic Performance of Cu/SiO2 in the Hydrogenation of Dimethyl Maleate." Catalysts 9, no. 9 (2019): 704. http://dx.doi.org/10.3390/catal9090704.

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Continuous hydrogenation of dimethyl maleate (DMM) toγ-butyrolactone (GBL), 1,4-butanediol (BDO) and tetrahydrofuran (THF) is a promising process in industry. In this study, Cu-M/SiO2 catalysts modified by basic promoters (M = Mg, Ca, Sr, Ba, La) were prepared, and characterized by physical adsorption of N2, in situ XRD, H2-TPR, CO2-TPD. With the addition of basic promoters, the basicity of Cu-M/SiO2 catalysts was improved. The particle size of CuO on Cu-M/SiO2 catalyst was increased after modified by Mg, Ca, Sr, Ba. However, the CuO particle was decreased on the Cu-La/SiO2 catalyst. The serie

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11

Wang, Dong, and Yujun Zhu. "An Effective Pt-Cu/SiO2 Catalyst for the Selective Hydrogenation of Cinnamaldehyde." Journal of Chemistry 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/5608243.

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The bimetal catalyst Pt-Cu/SiO2 was prepared by the impregnation method. Its catalytic performance was investigated by the selective hydrogenation of cinnamaldehyde. Pt-Cu/SiO2 exhibited much higher selectivity (64.1%) to cinnamyl alcohol than Pt/SiO2 (3.7%), while they showed similar conversion of cinnamaldehyde. This enhancement was attributed to the increase in the amount of the Pt0 species on the Pt-Cu/SiO2 surface, which is derived from the interaction between Pt and Cu revealed by XRD and XPS.

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12

Wang, Hui, Haifeng Yang, and Lifang Zhao. "A Facile Synthesis of Core-Shell SiO2@Cu-LBMS Nano-Microspheres for Drug Sustained Release Systems." Materials 12, no. 23 (2019): 3978. http://dx.doi.org/10.3390/ma12233978.

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A well-dispersed SiO2@Layered hydroxide cupric benzoate (SiO2@Cu-LBMS) with a hierarchical structure have been synthesized by a facile method. The layered hydroxide cupric benzoate with a structure of layered basic metal salt (Cu-LBMS) was directly deposited on the surface of silica spheres without any blinder. The morphology of the SiO2@Cu-LBMS nano-microsphere was observed by SEM, and the reaction conditions was also discussed. In addition, the XRD patterns and FTIR spectra provide consistent evidence to the formation of SiO2@Cu-LBMS nano-microspheres. The release behavior and drug loading c

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13

Zhong, Jian Hua, Zhi Hong Li, and Ling Yu Ou Yang. "Study on the Mechanical Property of Cu-Filled Isotropically Conductive Adhesive/SiO₂ Composites." Advanced Materials Research 239-242 (May 2011): 1068–71. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.1068.

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Cu-filled isotropically conductive adhesive/SiO2 composites were prepared by direct-blending modified SiO2 into Cu-filled ICAs. The effects of different contents of SiO2 on the mechanical property were sdudied in this paper. The infrared spectra of the cured product between epoxy resin and imidazole was obtained with FT-IR. The surface morphology of the composite and its fractured surface after tensil test were observed by scanning electron microscope(SEM). In addition, energy dispersive spectrometry(EDS) was applied to analyze the distribution of Si in the adhesive layer. Experimental results

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14

Liu, Chih-Yi, Chun-Hung Lai, Chao-Cheng Lin, and Chih-Peng Yang. "Insertion of a Graphene Oxide Layer into a Cu/SiO2/Pt Structure to Overcome Performance Degradation in a Vaporless Environment." Applied Sciences 9, no. 7 (2019): 1432. http://dx.doi.org/10.3390/app9071432.

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A Cu/SiO2/Pt structure is usually used to study the resistive memory properties of an electrochemical resistive random access memory. It can be reversibly switched between low- and high-resistance states by using DC voltages in the atmosphere. However, its resistive switching behavior disappears in a vaporless environment because no conducting filaments can be formed within the Cu/SiO2/Pt structure. This study inserted a graphene oxide (GO) layer to fabricate a Cu/GO/SiO2/Pt structure that could be resistively switched in a vaporless environment. The X-ray photoelectron spectra depth profile o

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15

Wang, Shi-Qing. "Barriers Against Copper Diffusion into Silicon and Drift Through Silicon Dioxide." MRS Bulletin 19, no. 8 (1994): 30–40. http://dx.doi.org/10.1557/s0883769400047710.

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The Semiconductor Industry Association (SIA) roadmap calls for the incorporation of Cu plugs (vias) integrated with interconnects in 1997. Copper is being evaluated for ULSI metallization because of its lower bulk electrical resistivity and its superior resistance to electromigration and stress voiding as compared to commonly used aluminum and its alloys. One of the major drawbacks of Cu is its fast diffusion in Si and drift in SiO2-based dielectrics, resulting in the deterioration of devices at low temperatures. Hence a diffusion barrier is necessary between Cu and Si or SiO2. Figure 1 is a c

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16

Gan, Yanling, Suping Cui, Xiaoyu Ma, Hongxia Guo, and Yali Wang. "Preparation of Cu-Al/SiO2 Porous Material and Its Effect on NO Decomposition in a Cement Kiln." Materials 13, no. 1 (2019): 145. http://dx.doi.org/10.3390/ma13010145.

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Nitrogen oxide (NOx) emissions have attracted much attention for increasing concern on the quality of the atmospheric environment. In view of NO decomposition in the cement production process, the preparation of Cu-Al/SiO2 porous material and its effect on NO decomposition were studied, and the denitrification mechanism was proposed in this paper. The NO decomposition performance of the Cu-Al/SiO2 porous material was tested via the experimental setup and infrared spectrometer and micro gas chromatography (GC). The result shows that the Cu-Al/SiO2 porous material with the template of cetyltrime

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17

Hai, Nguyen Thi Thanh, Nguyen Duc Cuong, Nguyen Tran Quyen, et al. "Facile Synthesis of Carboxymethyl Cellulose Coated Core/Shell SiO2@Cu Nanoparticles and Their Antifungal Activity against Phytophthora capsici." Polymers 13, no. 6 (2021): 888. http://dx.doi.org/10.3390/polym13060888.

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Cu nanoparticles are a potential material for creating novel alternative antimicrobial products due to their unique antibacterial/antifungal properties, stability, dispersion, low cost and abundance as well as being economical and ecofriendly. In this work, carboxymethyl cellulose coated core/shell SiO2@Cu nanoparticles (NPs) were synthesized by a simple and effective chemical reduction process. The initial SiO2 NPs, which were prepared from rice husk ash, were coated by a copper ultrathin film using hydrazine and carboxymethyl cellulose (CMC) as reducing agent and stable agent, respectively.

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18

Kurniawan, Enggah, Shuya Hosaka, Masayuki Kobata, Yasuhiro Yamada, and Satoshi Sato. "Vapor-Phase Oxidant-Free Dehydrogenation of 2,3- and 1,4-Butanediol over Cu/SiO2 Catalyst Prepared by Crown-Ether-Assisted Impregnation." Chemistry 5, no. 1 (2023): 406–21. http://dx.doi.org/10.3390/chemistry5010030.

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A silica-supported copper (Cu/SiO2) catalyst containing highly dispersed Cu nanoparticles was prepared via a crown-ether-assisted impregnation method. A 12-crown-4-ether-assisted Cu/SiO2 catalyst outperformed several Cu/SiO2 catalysts prepared with various organic additives in the dehydrogenation of 2,3- and 1,4-butanediol. It was found that the catalytic activity, i.e., the formation rate of acetoin from 2,3-butanediol and that of γ-butyrolactone from 1,4-butanediol, was proportional to the copper surface area.

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19

Ayandiran, Afees A., Philip E. Boahene, Ajay K. Dalai, and Yongfeng Hu. "Hydroprocessing of Oleic Acid for Production of Jet-Fuel Range Hydrocarbons over Cu and FeCu Catalysts." Catalysts 9, no. 12 (2019): 1051. http://dx.doi.org/10.3390/catal9121051.

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In the present study, a series of monometallic Cu/SiO2-Al2O3 catalysts exhibited immense potential in the hydroprocessing of oleic acid to produce jet-fuel range hydrocarbons. The synergistic effect of Fe on the monometallic Cu/SiO2-Al2O3 catalysts of variable Cu loadings (5–15 wt%) was ascertained by varying Fe contents in the range of 1–5 wt% on the optimized 13% Cu/SiO2-Al2O3 catalyst. At 340 °C and 2.07 MPa H2 pressure, the jet-fuel range hydrocarbons yield and selectivities of 51.8% and 53.8%, respectively, were recorded for the Fe(3)-Cu(13)/SiO2-Al2O3 catalyst. To investigate the influen

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20

Zelin, Juan, Camilo Ignacio Meyer, Hernán Antonio Duarte, and Alberto Marchi. "A Stable and Reusable Supported Copper Catalyst for the Selective Liquid-Phase Hydrogenation of 5-Hydroxymethylfurfural to 2,5-Bis(hydroxymethyl)furan." Catalysts 12, no. 11 (2022): 1476. http://dx.doi.org/10.3390/catal12111476.

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Synthesis of 2,5-bis(hydroxymethyl)furan (BHMF) by selective 5-hydroxymethylfurfural (HMF) hydrogenation is ecofriendly and industrially important since HMF is obtained from renewable sources, and BHMF is a raw material used for production of biodegradable polymers. Four copper-based catalysts were prepared by incipient wetness impregnation (Cu/SiO2-I, Cu/Al2O3-I), precipitation–deposition (Cu/SiO2-PD) and coprecipitation (CuMgAl), and then tested in the liquid-phase hydrogenation of HMF. Metallic phases with large copper particles were obtained by incipient wetness impregnation, while precipi

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21

Takeuchi, Kai, Takeki Ninomiya, Michitaka Kubota, et al. "Hydrophilic Bonding of SiO₂/SiO₂ and Cu/Cu using Sequential Plasma Activation." ECS Transactions 112, no. 3 (2023): 95–101. http://dx.doi.org/10.1149/11203.0095ecst.

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Hybrid bonding is an indispensable technique for the 3D integration of electronic systems. Cu-to-Cu interconnections and SiO2-to-SiO2 dielectric layers should be bonded simultaneously in the wafer-to-wafer bonding process. In this study, sequential plasma activation (SPA) including O2 plasma, N2 plasma, and N radical is investigated for low-temperature bonding of Cu and TEOS SiO2 at 200°C. The SPA bonding improves the bond strength to more than 1 J/m2 compared to the conventional single gas plasma activation bonding. The surface analysis indicates that SPA forms oxynitrides on TEOS SiO2 surfac

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22

Prodjosantoso, A. K., Y. Febriadi, A. R. P. Utami, and M. P. Utomo. "The Stabilization of Copper and Cadmium in The Hydrated CaO-CuO-SiO2 and CaO-CdO-SiO2 Composites." Nature Environment and Pollution Technology 23, no. 2 (2024): 947–57. http://dx.doi.org/10.46488/nept.2024.v23i02.029.

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The stabilization of toxic metals in the stable matrices is quite well-known. Research on copper and cadmium stabilization in the CaO-CuO-SiO2 and CaO-CdO-SiO2 composites was conducted to study the characteristics of CaO-CuO-SiO2 and CaO-CdO-SiO2 composites as well as the Cu and Cd metals stabilization in the hydrated composites. The composites of CaO-CuO-SiO2 and CaO-CdO-SiO2 were synthesized by the solid-state reaction method. A stoichiometric amount of CaO, SiO2, Cu(NO3)2, and CdO were calcined at 1050°C for 4 hours. The synthesized compounds were further hydrated in a soaking time of 30, 6

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23

Smith, Miranda L., Andrew Campos, and James J. Spivey. "Reduction processes in Cu/SiO2, Co/SiO2, and CuCo/SiO2 catalysts." Catalysis Today 182, no. 1 (2012): 60–66. http://dx.doi.org/10.1016/j.cattod.2011.07.026.

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24

Deng, Wen, Li Yue, Yu Xia Li, Xu Xin Cheng, Ya Qin Wei, and Yu Yang Huang. "Positron Annihilation on the Surfaces of Single Crystals of Si, SiO₂, Graphite and Cu." Materials Science Forum 607 (November 2008): 152–54. http://dx.doi.org/10.4028/www.scientific.net/msf.607.152.

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Slow positron beam technique has been applied to measure the Doppler broadening spectra for single crystals of Cu, SiO2, graphite, virgin Si, and Si without oxide film. The results show that the Cu ratio curve shows a high peak due to Cu having 10 electrons in the 3d shells. The ratio curve of SiO2 is higher than that of graphite. For the single crystal of Cu, SiO2, graphite, and Si without oxide film, the S (W) parameters decrease (increase) as positron implantation energy increasing. Defects on the surface lead to higher S (lower W) value. For the virgin Si and the thermally grown SiO2-Si sa

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25

He, R., M. Fujino, A. Yamauchi, and T. Suga. "Combined Surface Activated Bonding Technique for Hydrophilic SiO2-SiO2 and Cu-Cu Bonding." ECS Transactions 75, no. 9 (2016): 117–28. http://dx.doi.org/10.1149/07509.0117ecst.

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26

Zhou, Shidong, Xiaoxing Niu, Xiuli Zhang, and Yuanliang Zhao. "The effect of silica and copper nanoparticles in polyimide on the friction and wear of polyethersulfone/polyimide mixture." Polymers and Polymer Composites 30 (January 2022): 096739112211334. http://dx.doi.org/10.1177/09673911221133438.

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The synergistic effect of silica (SiO2) and copper (Cu) nanoparticles in polyimide (PI) on the friction interfacial deformation of polyethersulfone/polyimide (PES/PI) blends was studied. Results indicate that the effect of SiO2 and Cu nanoparticles on the tribological performance of PES/PI nanocomposites is quite different from each other. The addition of SiO2 nanoparticles into PI improves the antifriction of PES/PI nanocomposites by 24.4%, but has little effect on the wear resistance. The incorporation of Cu nanoparticles into PI enhances the wear resistance of PES/PI nanocomposites by 55.5%

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27

Takeuchi, Kai, Takeki Ninomiya, Michitaka Kubota, et al. "Hydrophilic Bonding of SiO₂/SiO₂ and Cu/Cu using Sequential Plasma Activation." ECS Meeting Abstracts MA2023-02, no. 33 (2023): 1595. http://dx.doi.org/10.1149/ma2023-02331595mtgabs.

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To meet the increasing market demand for next-generation electronic devices, 3D system integration is getting greater and greater attention. However, traditional methods such as soldering or bump bonding cannot handle high density interconnection. Therefore, hybrid bonding technology, which simultaneously bonds Cu wiring layer and SiO2 dielectric layer, is indispensable. In the hybrid bonding process, hydrophilic bonding is commonly used to bond SiO2 to SiO2. This technique involves bonding of hydrophilic bonding surfaces, followed by post-bonding annealing to achieve a reliable bonding interf

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28

Sriprom, Pongsert, Arthit Neramittagapong, and Sutasinee Neramittagapong. "Synthesized BG-MCM-41 as Support Catalyst for Fenton-Like Reaction of Lignin Degradation." Advanced Materials Research 931-932 (May 2014): 12–16. http://dx.doi.org/10.4028/www.scientific.net/amr.931-932.12.

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Lignin was degraded by Fenton-like reaction using Cu-BG-MCM41, in which BG-MCM41 was synthesized by hydrothermal technique from Bagasse ash (BG) as a support. Cu was immobilized on BG-MCM41 by in situ hydrothermal and impregnation method and characterized by XRD and BET surface area. The Fenton-like reactions were carried out in a batch reactor using 5wt%CuO/SiO2, 10wt%CuO/SiO2, 5wt%Cu-BG-MCM41 and 10wt%Cu-BG-MCM41 at the pH of 3 and the temperature of 80°C. The Cu loading, pH, and temperature affected lignin degradation. The efficiency of lignin degradation obtained were 95% for 5wt%CuO/SiO2,

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Li, Tianyou, Ling Lin, Chongchong Chen, et al. "Insights into a New Formation Mechanism of Robust Cu/SiO2 Catalysts for Low-Temperature Dimethyl Oxalate Hydrogenation Induced by a Chelating Ligand of EDTA." Catalysts 12, no. 3 (2022): 320. http://dx.doi.org/10.3390/catal12030320.

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The Cu/SiO2 catalyst has been widely used in dimethyl oxalate (DMO) hydrogenation due to its low cost and high efficiency. However, the reaction temperature of DMO hydrogenation is higher than the Hüttig temperature of Cu, and the smaller Cu particles are easier to agglomerate. Therefore, there is much interest in constructing a catalyst with a small particle size and strong stability. In the present work, the effect of introducing EDTA on Cu/SiO2 catalysts is systematically investigated. It not only was beneficial to form smaller copper nanoparticles (CuNPs) but also to enhance the stability

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30

Wu, Jincheng, Guoguo Liu, Qin Liu, Yajing Zhang, Fu Ding, and Kangjun Wang. "A Cu-SiO2 Catalyst for Highly Efficient Hydrogenation of Methyl Formate to Methanol." Catalysts 13, no. 7 (2023): 1038. http://dx.doi.org/10.3390/catal13071038.

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The hydrogenation of methyl formate to methanol is considered one of the most effective methods for recycling methyl formate products. We recently developed a highly efficient and cost-effective Cu-SiO2 catalyst using the ammonia-evaporation (AE) method. The Cu-SiO2-AE catalyst demonstrated superior performance, achieving a methyl formate conversion of 94.2% and a methanol selectivity of 99.9% in the liquid product. The catalyst also displayed excellent stability over a durability test of 250 h. Compared to the commonly used Cu-Cr catalyst in the industry, the Cu-SiO2-AE catalyst exhibited hig

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31

Kim, Young Hwan, Beong Gi Jo, Jee Hean Jeong, and Young Soo Kang. "Preparation and Characterization of Cu-SiO₂ Nanoparticles." Solid State Phenomena 121-123 (March 2007): 255–58. http://dx.doi.org/10.4028/www.scientific.net/ssp.121-123.255.

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A room temperature route for doping silica particles with Cu nanoparticles to achieve hybrid structures is introduced. First, silica nanoparticles were synthesized according to the well-known Stöber method by hydrolysis and condensation of TEOS in a mixture of ethanol with water, using ammonia as catalyst to initiate the reaction. These SiO2 nanoaprticles were dried at 100 oC. We measured the size of these nanoparticles with transmission electron microscopy (TEM). Second, Cu-SiO2 nanoparticles were synthesized by reaction with CuCl2 and SiO2 nanoparticles in presence of catalyst at room temper

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32

Li, Ying, Gao Yang Zhao, Xiao Fei Zhou, Li Ning Pan, and Yang Ren. "A HRTEM Study of Resistive Switching Behaviour in SiO₂ Thin Films by Sol-Gel Process." Materials Science Forum 687 (June 2011): 1–6. http://dx.doi.org/10.4028/www.scientific.net/msf.687.1.

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Amorphous SiO2 thin films were fabricated at different temperatures using sol-gel technique. The unipolar resistive switching behavior was observed in Cu/ SiO2/ ATO (SnO2: Sb) sandwiched structure when the SiO2 thin film annealed at 500°C. The average ratio of Roff /Ron is 102. We investigated the successful device using HRTEM and XPS. It shows that the Cu defuses into the SiO2 thin film and it forms CuSiO3 in the interface between SiO2 and ATO films according to the high resolution images.

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33

Tripathi, Anamol, Kajornsak Faungnawakij, Apirat Laobuthee, Suttichai Assabumrungrat, and Navadol Laosiripojna. "Catalytic Activity of Bimetallic Cu-Ag/MgO-SiO2 Toward the Conversion of Ethanol to 1,3-Butadiene." International Journal of Chemical Reactor Engineering 14, no. 5 (2016): 945–54. http://dx.doi.org/10.1515/ijcre-2015-0164.

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Abstract In the present work, the catalytic conversion of ethanol to 1,3-butadiene (1,3-BD) was studied over monometallic of Cu and Ag, and bimetallic Cu-Ag supported on MgO-SiO2 (with MgO/SiO2 ratio of 2.0) under the temperature range from 250 to 325 °C. All catalysts were prepared by 4 different techniques including (i) conventional impregnation, (ii) microwave-assisted method, (iii) polyvinyl alcohol/sodium borohydride (PVA/NaBH4) assisted method, and (iv) benzoxaxine-assisted method to elucidate the effect of catalyst preparation method on their catalytic performance. All fresh and spent c

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34

Yi, Seol-Min, Kwang-Ho Jang, Jung-Uk An, Sang-Soo Hwang, and Young-Chang Joo. "The self-formatting barrier characteristics of Cu–Mg/SiO2 and Cu–Ru/SiO2 films for Cu interconnects." Microelectronics Reliability 48, no. 5 (2008): 744–48. http://dx.doi.org/10.1016/j.microrel.2007.12.005.

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35

Cheng, Yi-Lung, and Chih-Yen Lee. "Comparison of Precursors for Self-Assembled Monolayers as Cu Barrier." ECS Meeting Abstracts MA2023-01, no. 13 (2023): 1290. http://dx.doi.org/10.1149/ma2023-01131290mtgabs.

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Self-assembled monolayers (SAMs) are the emerging materials as the candidate of barriers for application in back-end-of–line interconnects in advanced generation. In this study, SAMs derived from organic molecules with different structures are compared in terms of electrical characteristics, Cu diffusion inhibition, and Cu–SiO2 adhesion promotion. Experimental results indicated that all SAMs formed in this study enhance the breakdown filed of SiO2 film, promote Cu–SiO2 adhesion, and prevent Cu-silicate formation under thermal annealing. Among the studied SAMs, APTMS-SAM derived from 3-aminopro

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Zheng, Cui Hua, Ke Xing Song, Xiu Hua Guo, and Yan Jun Zhou. "Study on Effect of Different Preparation Process Parameters on Properties and Microstructure of SiO₂/Cu Composites." Applied Mechanics and Materials 117-119 (October 2011): 908–12. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.908.

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The SiO2 nanoparticles reinforced Cu-matrix composites were prepared by powder metallurgy technology．The influences of SiO2 volume fraction on the properties of hardness、conductivitity rate and wear behavior of Cu-matrix composites were studied. The results showed that conductivity rate was decreased with the increase of the SiO2 volume fraction；whereas the hardness was increased, then decreased and wear behavior was increased. Sintering an hour of performance was superior to the sintering half an hour.When SiO2 nanoparticle volume fraction was achieved 2.5%, comprehensive properties of SiO2/C

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Nuryono, Nuryono, Nur Mutia Rosiati, Abraham L. Rettob, Suyanta Suyanta, and Yateman Arryanto. "Coating of 2-Aminobenzimidiazole and 1-(o-Tolyl)biguanide Functionalized Silicas on Iron Sand Magnetic Material for Sorption of [AuCl₄]^–." Indonesian Journal of Chemistry 19, no. 2 (2019): 395. http://dx.doi.org/10.22146/ijc.34653.

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Two novel materials of 2-aminobenzimidiazole (AB) and 1-(o-tolyl)biguanide (TB) modified silicas coated on the iron sand magnetic material (MM@SiO2/AB and MM@SiO2/TB) have been synthesized and were used to adsorb Au(III) from Au/Cu/Ni solution. Silica layering MM was modified with polyamino compounds via a sol-gel process using a sodium silicate solution, 3-chloropropyltrimethoxysilane (CPTS) and modifier compounds. Adsorption of Au(III) on MM@SiO2/AB and MM@SiO2/TB was investigated in a batch system by varying pH, initial concentration, contact time and the presence of other metal ions (Cu(II

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38

Agustiningsih, Dewi, Nuryono Nuryono, Sri Juari Santosa, and Eko Sri Kunarti. "Introducing Cu(II) onto SiO<sub>2</sub>-TiO<sub>2</sub> with Rice Husk Ash as the Source of Silica and Its Catalytic Activity for Kumada Cross-coupling Reaction to Produce Biphenyl Compound." Indonesian Journal of Chemistry 25, no. 3 (2025): 680. https://doi.org/10.22146/ijc.99296.

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This research studied the preparation of SiO2-TiO2/Cu(II) by utilizing rice husk ash as the SiO2 precursor, and evaluated its efficiency as a heterogeneous catalyst in biphenyl synthesis through Kumada cross-coupling reaction, which is widely known as an important intermediate in pharmacology and agriculture manufacturing. In this study, the catalyst preparation was conducted by extracting SiO2 from rice husk ash, combining it with TiO2, and introducing Cu(II) onto its surface with CuCl2·2H2O as the precursor with various concentration of Cu(II). Comprehensive characterization using techniques

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39

Tang, Haodong, Xiali Zheng, Yun Yu, Jinxin Liang, Yifan Zheng, and Zongjian Liu. "Undercooling, Thermal Stability, and Application in Exothermic Catalytic Reaction of SiO2 Encapsulated SnZnCu Microspheres." Catalysts 12, no. 2 (2022): 205. http://dx.doi.org/10.3390/catal12020205.

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SiO2 encapsulated SnZnCu microspheres (several micrometers to about 30 μm in diameter) with very low undercooling, narrow freezing/melting range, and high thermal cycling stability have been produced and used as the temperature stabilizer of the packed bed in highly exothermic Fischer–Tropsch reaction. The core–shell structured SnZnCu@SiO2 microspheres are prepared in a two-step way, namely SnZnCu microspheres are firstly produced via a molten LiCl–KCl–CsCl eutectic-based metal emulsion method, and then a sol–gel approach is employed to coat them with a uniform, anti-leakage SiO2 layer. It is

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40

Lee, Jae-Young, Cheong-Soo Choi, Kwang-Taek Hwang, et al. "Optimization of Hybrid Ink Formulation and IPL Sintering Process for Ink-Jet 3D Printing." Nanomaterials 11, no. 5 (2021): 1295. http://dx.doi.org/10.3390/nano11051295.

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Ink-jet 3D printing technology facilitates the use of various materials of ink on each ink-jet head and simultaneous printing of multiple materials. It is suitable for manufacturing to process a complex multifunctional structure such as sensors and printed circuit boards. In this study, a complex structure of a SiO2 insulation layer and a conductive Cu layer was fabricated with photo-curable nano SiO2 ink and Intense Pulsed Light (IPL)-sinterable Cu nano ink using multi-material ink-jet 3D printing technology. A precise photo-cured SiO2 insulation layer was designed by optimizing the operating

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41

Yakout, Amr A., Medhat A. Shaker, Khalid Z. Elwakeel, and Wael Alshitari. "Response surface methodological optimization of batch Cu(II) sorption onto succinic acid functionalized SiO2 nanoparticles." Canadian Journal of Chemistry 97, no. 4 (2019): 277–86. http://dx.doi.org/10.1139/cjc-2018-0086.

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Functionalizing nanosilica (n-SiO2) particles with suitable active organic moiety leads to the formation of surfaces with precisely controlled physical and chemical characteristics. In this work, a novel nanosorbent (31 ± 2.4 nm), namely succinic acid functionalized nanosilica (n-SiO2@SA), was synthesized via a simple protocol using microwave irradiation to remove Cu(II) ions from aqueous media. The successful functionalization of n-SiO2 was confirmed by FTIR, and the thermal stability of n-SiO2@SA was investigated by TGA study. Other techniques, including HRTEM, DLS and zeta-potential, were u

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42

Wang, Qi, Kai Liang Zhang, Fang Wang, Kai Song, and Zhi Xiang Hu. "Investigation on the Electric-Field-Induced Metal-Insulator Transition in Vo_X-Based Devices." Applied Mechanics and Materials 130-134 (October 2011): 1–4. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.1.

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A sandwich device structure of MIM (metal/insulator/metal) is designed and its metal-insulator transition induced by an external electric field is investigated. VOxfilms were deposited on several different substrates by dc magnetic sputtering at room temperature. The device of Pt/VOx/Cu/Ti/SiO2/Si exhibited steady bipolar resistance switching behaviors between high resistive state (HRS) and low resistive state (LRS) with-0.4V/0.3V operation voltage (SET/RESET), while the devices of Pt/VOx/V/Cu/Ti/SiO2/Si, Pt/VOx/Al/Ti/SiO2/Si and Pt/VOx/Pt/Ti/SiO2/Si didn’t show this steady characteristic. Fro

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43

Alaa F. Hashim, Fuad T. Ibrahim, and Khalid H. Razeg. "SiO2@Cu core: antibacterial, "shell" active agents synthesized through sol-gel." Global Journal of Engineering and Technology Advances 14, no. 2 (2023): 141–49. http://dx.doi.org/10.30574/gjeta.2023.14.2.0034.

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We examined the capacity of SiO2@Cu core-shell nanoparticles to inhibit Escherichia coli and Streptococcus mutaus. Before and after the addition of silicate, copper showed a surface plasmon resonance (SPR) with a peak in the 620–630 nanometers' region. SiO2@cu core-shell nanoparticle manufacturing was further demonstrated to have a spherical shape, as demonstrated in TEM. The crystal structure of the SO2 @cu we found matches the X-ray diffraction patterns for the nanoparticles, which display Face-Centered Cubic (FCC) copper. The infrared Fourier transform (FT-IR). Explains more about the studi

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44

Zeynizadeh, Behzad, Maryam Sadeghbari, and Nader N. Pesyan. "Synthesis and Characterization of Copper (II) and Nickel (II) Immobilized on Silica- Coated Copper Ferrite: As Novel Magnetically Reusable Nano Catalysts Towards Reduction of Nitroarenes with NaBH4." Current Organic Synthesis 16, no. 7 (2019): 1010–23. http://dx.doi.org/10.2174/1570179416666190725094949.

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Aim and Objective: Nowadays, the design, synthesis and application of magnetically nanocomposite systems have attracted the attention of numerous scientists. The huge surface area and magnetic characteristic of nanoparticles as well as the inherent potentiality of the used metal species, makes them susceptible to have different reactivity in chemical reactions. In this context, we therefore encouraged to prepare a new design of magnetic nanocatalysts as CuFe2O4@SiO2@AAPTMS@Ni(II) and CuFe2O4@SiO2@AAPTMS@Cu(II) followed by monitoring of their catalytic activities towards reduction of nitroarene

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45

Yuan, Qinlin, Hang Xu, Shaokang Wang, Zhewen Yang, Wenke Zhang, and Qinggao Ma. "Preparation of Silver and Copper Co-impregnated Nano-ZnO Immobilized on Mesoporous SiO2 and its Photocatalytic Performance." Nature Environment and Pollution Technology 21, no. 2 (2022): 659–67. http://dx.doi.org/10.46488/nept.2022.v21i02.025.

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To improve light usage, Ag and Cu were co-impregnated with nano-ZnO, and the mesoporous silica gel (meso-SiO2) was chosen as the carrier. The sol-gel method was used to successfully construct a composite photocatalyst with 3 percent Ag/0.1 percent Cu/nano-ZnO/meso-SiO2. For the evaluation of the photocatalytic activity of the as-prepared catalysts, Reactive Black 5 was used as a simulated organic pollutant in aqueous. The results revealed that uniform spherical nano-ZnO particles with a diameter of 10 nm were attached to the surface and mesopore of meso-SiO2. The average pore width and specifi

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Balaga, Ravi, Putrakumar Balla, Xiaoqiang Zhang, et al. "Enhanced Cyclopentanone Yield from Furfural Hydrogenation: Promotional Effect of Surface Silanols on Ni-Cu/m-Silica Catalyst." Catalysts 13, no. 3 (2023): 580. http://dx.doi.org/10.3390/catal13030580.

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A direct alkaline hydrothermal method was used to synthesize mono- and bimetallic Ni and Cu on mesoporous silica (m-SiO2) as catalysts for the hydrogenation of furfural (FAL) to cyclopentanone (CPO). The catalysts were characterized by XRD, FTIR, H2-TPR, SEM, TEM, HR-TEM, XPS, ICP, BET, and CHN analysis. The results demonstrate that the addition of Cu metal improved the reducibility of Ni catalysts and revealed Ni-Cu alloy formation over m-SiO2. Furthermore, XPS and FTIR results reveal that the silanol groups on the catalyst surface play an important role in the ring rearrangement of furfuryl

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47

Wang, Ning, Yuanyuan Zhao, Xuelian Wu, et al. "Synthesis of Cu Nanoparticles Incorporated Mesoporous C/SiO2 for Efficient Tetracycline Degradation." Nanomaterials 13, no. 17 (2023): 2478. http://dx.doi.org/10.3390/nano13172478.

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In this study, a Cu NPs-incorporated carbon-containing mesoporous SiO2 (Cu/C-SiO2) was successfully synthesized through a grinding-assisted self-infiltration method followed by an in situ reduction process. The obtained Cu/C-SiO2 was then employed as a Fenton-like catalyst to remove tetracycline (TC) from aqueous solutions. TEM, EDS, XRD, N2 adsorption–desorption, FTIR, and XPS methods were used to characterize the crystal structure, morphology, porosity, chemical composition, and surface chemical properties of the catalyst. The effects of initial TC concentration, catalyst dosage, H2O2 dosage

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48

Prodjosantoso, Anti Kolonial, Farrasiya Indika Shelma, Kun Sri Budiasih, and Maximus Pranjoto Utomo. "The use of Silica Supported Nickel-Copper Oxide Catalyst for Photodegradation of Methylene Blue." Oriental Journal Of Chemistry 35, no. 4 (2019): 1414–19. http://dx.doi.org/10.13005/ojc/350423.

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Photodegradation is a save and low cost methods to clean water bodies from some organic pollutants. The method has been developed in term of increasing the efficiency of the degradation capacity of photocatalyst. The photocatalyst working under visible light is the most desirable. The preparation of silica supported nickel-copper oxide [(Ni-Cu)Ox@SiO2] catalyst and the use of the catalyst in the photodegradation of methylene blue in the water are reported. The catalyst was prepared by impregnating the silica support into the mixture of nickel and copper salts, followed by calcination at 800○C

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49

Marelli, Marcello, Federica Zaccheria, Nicoletta Ravasio, et al. "Copper Oxide Nanoparticles over Hierarchical Silica Monoliths for Continuous-Flow Selective Alcoholysis of Styrene Oxide." Catalysts 13, no. 2 (2023): 341. http://dx.doi.org/10.3390/catal13020341.

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A simple and reproducible approach for the synthesis of Cu-based heterogeneous catalysts, named flow chemisorption hydrolysis (flow-CH), is reported. The approach, derived from the CH method, allows size-controlled CuO nanoparticles (mean diameter 2.9 nm) to be obtained, that are highly and homogeneously dispersed into hierarchically meso-/macroporous silica monoliths. The Cu-based monolithic catalysts (CuO@SiO2-MN, 8.4 wt.% Cu) were studied in the styrene oxide ring opening reaction at 60 °C in the presence of isopropanol, under continuous flow-through conditions. A remarkable activity with a

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Hernández, M. A., M. Asomoza, F. Rojas, et al. "Trapping of BTX compounds by SiO2, Ag–SiO2, Cu–SiO2, and Fe–SiO2 porous substrates." Chemosphere 81, no. 7 (2010): 876–83. http://dx.doi.org/10.1016/j.chemosphere.2010.08.004.

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