نتایج جستجو برای: rgo zno
تعداد نتایج: 21650 فیلتر نتایج به سال:
در این تحقیق، نانومیله های اکسید روی (zno) به روش هیدروترمال بر روی فویل روی (zn) رشد داده شده و اثر پارامترهای دما، زمان، غلظت محلول و کاشت جوانه بر فرآیند رشد و مورفولوژی نانومیله ها مورد بررسی قرار گرفته است. همچنین برای افزایش بازده فرآیند فوتوکاتالیستی، از کامپوزیت سازی با اکسید گرافن احیاء شده (rgo) بهره گرفته شده است. بدین منظور، ابتدا گرافیت با استفاده از یک روش بهبود یافته ی هامرز (hum...
Abstract The heterostructure consisting of zinc oxide and reduced graphene (ZnO/rGO/ZnO) is prepared on cotton fabric by repeated immersion magnetron sputtering. In addition, the gas selectivity sample analyzed based I-V characteristics under different atmospheres (air, methanal, ethanol, acetone toluene). Compare with that in air atmosphere, characteristic curve toluene atmosphere changes sign...
Reduced graphene oxide (rGO) was applied to prepare various composites of rGO/photocatalyst of G/TiO2, G/ZnO and G/Ta2O5, using titanium (IV) isopropoxide, Zn powder and commercial Ta2O5 powder as photocatalyst precursors, respectively. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric-differential t...
In recent years, graphene oxides (GO)/reduced oxide (rGO) and its derivatives have garnered/gained the attention of scientific research community due to their superior candidature in various electronic optoelectronic devices exceptional solution processability, easy fabrication, tunable electron transport properties. However, requirement high temperature processing steps complicated processes m...
Abstract In this study, we report a mild and controllable preparation method for graphene oxide (GO) ZnO ultrafine powder, respectively. On basis, reduced (rGO)/ZnO composite powder the photoanodes of dye-sensitized solar cells (DSSCs) was synthesized by chemical reduction method. Phase composition, microstructure, structure, conductivity, specific surface area were examined using X-ray diffrac...
A hydrothermal method for the synthesis of reduced graphene oxide/titanium dioxide filter (RGO/TiO2) and reduced graphene oxide/zinc oxide filter (RGO/ZnO) by using polypropylene (PP) porous filter is reported. Field emission scanning electron microscopy illustrated that the nanoparticles were uniformly distributed on the reduced graphene oxide nanosheets. Flexural tests showed that the physica...
Abstract Synergistic doping of 2-D Material ZnO nanosheets and reduced graphene oxide (rGO) Polyvinylidene fluoride (PVDF), PVDF/ZnO, PVDF/ZnO/rGO Hybrid membranes simply by solution casting technique for raising electronically favored β-phase ratio. Rietveld refinement X-ray diffraction technique, FTIR, Microscopic investigation, SEM, density-functional theory (DFT) calculations were employed ...
Photocatalytic activity of semiconductor nanostructures is gaining much importance in recent years in both energy and environmental applications. However, several parameters play a crucial role in enhancing or suppressing the photocatalytic activity through, for example, modifying the band gap energy positions, influencing the generation and transport of charge carriers and altering the recombi...
This work aims at the development of a method electromagnetic activation salicylic acid molecules per se (SA) through ultrasonic (20 kHz) complexation with oxidized zinc-graphene structure. The result this implies synthesized nanopartiсles “ZnO – partially restored graphene oxide (rGO) SA” average size (5.53 ± 0.11) nm and hexagonal wurtzite zinc structure complexed SA molecules. Complexation r...
For the first time, acrylonitrile–butadiene rubber (NBR)–graphene oxide (GO) and reduced graphene (rGO) composites were prepared without cure activators: zinc oxide/stearic acid (ZnO/SA) studied. The vulcanization characteristics of compounds systematically studied at 160–190°C, with aid rheometer differential scanning calorimetry (DSC) techniques. NBR revealed rapid curing time (t90) greater r...
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