نتایج جستجو برای: cuo zno al2o3
تعداد نتایج: 34497 فیلتر نتایج به سال:
The influence of Al and Zn by 10 wt.% as alloying elements on the electrochemical corrosion behaviour Cu-based alloy in 0.1 M NaCl solution is examined. Results from both impedance spectroscopy method potentiodynamic techniques indicate that occurred at a higher rate for added alloys than pure Cu, where shows worst performance. Copper forms stable protective layer Cu2O, CuO, result, has lower r...
Injecting charge carriers into the mobile bands of an inorganic oxide insulator (for example, SiO2, HfO2) is a highly complicated task, or even impossible without external energy sources such as photons. This is because oxide insulators exhibit very low electron affinity and high ionization energy levels. Here we show that a ZnO layer acting as a cathode buffer layer permits direct electron inj...
Zincian georgeite, an amorphous copper-zinc hydroxycarbonate, has been prepared by co-precipitation using acetate salts and ammonium carbonate. Incorporation of zinc into the georgeite phase and mild ageing conditions inhibits crystallisation into zincian malachite or aurichalcite. This zincian georgeite precursor was used to prepare a Cu/ZnO catalyst, which exhibits a superior performance to a...
In this paper, a single ZnO microwire-based photodetector for the monitoring of ultraviolet (UV) radiation is described. Single crystal ZnO microwires were synthesized using a chemical vapor deposition (CVD) on the Si or Al2O3 substrate. The UV photodetector was fabricated by using in-situ lift-out method in a focused ion beam system to manipulate individual zinc oxide microwire. The photodetec...
The increasing production and use of engineered nanomaterials (ENMs) inevitably results in their higher concentrations in the environment. This may lead to undesirable environmental effects and thus warrants risk assessment. The ecotoxicity testing of a wide variety of ENMs rapidly evolving in the market is costly but also ethically questionable when bioassays with vertebrates are conducted. Th...
This study presents the morphological and photocatalytic properties of ZnO/CuO nanocomposite as a function pH. The samples were synthesized through facile chemical bath precipitation method in wide...
Nanopartiküller (NP) (Nanomateryaller-NM), hızla gelişen nanoteknolojide çığır açan partiküllerdir. Bu partiküllerin en az bir boyutu 1-100 nm aralığındadır. Metal oksit nanopartikülleri, nanomateryallerin temel üyelerinden biri olup, tıp, kozmetik, boya, tekstil ve gıda ürünleri gibi çok çeşitli alanlarda yaygın şekilde kullanılmaktadır. NP’lerinin yoğun kullanımı, insanların partiküllere inha...
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