نتایج جستجو برای: cu zno
تعداد نتایج: 80474 فیلتر نتایج به سال:
Conductive and transparent multilayer thin films consisting of three alternating layers (TiO2/Ag/SiO2, TAS) have been fabricated for applications as transparent conducting oxides. Metal oxide and metal layers were prepared by electron-beam evaporation with ion-assisted deposition, and the optical and electrical properties of the resulting films as well as their energy bounding characteristics a...
Cu nanoparticles (CuNPs) were successfully synthesized in situ on ZnO whiskers as a selective scaffold, which were supported in a microstructured paper matrix composed of inorganic fibers; as-prepared paper composites were easy to handle in practical use and demonstrated excellent catalytic performance in the methanol reforming process for effective hydrogen production.
A simple and convenient one-step method for synthesis of acridines and their derivatives from condensation of aromatic aldehydes, cyclic diketones, and aryl amines using Cu-doped ZnO nanocrystalline powder as a catalyst is reported. The present protocol provides several advantages such as good yields, short reaction time, easy workup, and simplicity in operation.
High-performance Cu/ZnO/(Al(2)O(3)) methanol synthesis catalysts are conventionally prepared by co-precipitation from nitrate solutions and subsequent thermal treatment. A new synthesis route is presented, which is based on similar preparation steps and leads to active catalysts, but avoids nitrate contaminated waste water.
Here, we have used a simple method for polyol synthesis, analysis, and testing of Au/Cu-doped ZnO Ultraviolet (UV) photodetectors (PD). Our results are reported discussed by X-ray diffraction (XRD) to ensure that the manufactured samples show hexagonal wurtzite structure. Transmission electron microscopy (TEM) confirmed nanoparticle growth in sample on surface, which is key improving light resp...
Colloidal solutions of ZnO-Cu nanoparticles can be used as catalysts for the reduction of carbon dioxide with hydrogen. The use of phosphinate ligands for the synthesis of the nanoparticles from organometallic precursors improves the reductive stability and catalytic activity of the system.
bond-order conservation-morse potential (boc-mp) method is used to carry out the calculationon the co2+ h20 system. one of the best catalysts for methanol synthesis in catalytic reductionof co2 with h2o is cu/zno/a1203 whose surface is supported by with some amount of pd orga. reduction of co2 with h20 on cu will result in methanol formation; while on ni will lead tomethane formation. in the me...
Thin films of ZnO, Cu-doped Cu2O and binary Cu2O/Cu-doped ZnO p-n heterojunction thin film were prepared tested for their heterogeneous photocatalytic activity in the removal three selected organic dyes: methylene blue (MB), orange (MO) Congo red (CR). The experiments carried out under UV light natural sunlight. synthesis photocatalysts was by an electrochemical deposition method resulting char...
The formation of protective layers on copper, zinc and copper-zinc (Cu-10Zn and Cu-40Zn) alloys at open circuit potential in aerated, near neutral 0.5 M NaCl solution containing benzotriazole (BTA) was studied using potentiodynamic measurements, electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS). The addition of benzotriazole affects the dissolution of the m...
• Dipole coupling is critical for understanding IR spectra of adsorbed CO on Cu. Surface protrusions dominate the contribution from Cu surface. The C-O frequency in supported determined by underlying support. Support dependent charging surface can explain shifts. regulates adsorbate population that sustain. Infrared spectroscopy chemisorbed Raney and materials with dispersed as nanoparticles ox...
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