in the present work, we report the synthesis of binary nano metal oxides such as zinc /copper oxide via novel dry synthetic methods such as thermal decomposition of oxalate precursor. the synthesis route involves facile solid-phase mechanochemical activation of a physical mixture of simple copper/zinc salts and oxalic acid, followed by calcination of the as-ground oxalate precursors at 450◦c. x...

Electrochemical deposition from a 0.1 M sodium sulphate solution, containing Cu2+ (adjusted to pH 3 with hydrochloric acid) produced a well defined copper nanoparticle deposit on the surface of a boron doped diamond electrode. Changing conditions such as potential (-0.8, -1.0 and -1.2 V), time (5, 2 and 0.5 s) and concentration of Cu2+ (500, 250 and 100 microM) was found to give copper nanopart...

In the present study copper oxide nanoparticles (CuNPs) were synthesized via simple and eco-friendly green route using black tea extract . Characterization of (NPs) was undertaken. The characteristic absorption peak CuNPs in range (352-355) nm UV–Vis spectrum. Scanning electron microscopy (SEM) transmission (TEM) studies revealed morphological structural character NPs. particle size 25-50 nm. E...

Ethylene glycol-functionalised copper(II) carboxylates Cu[O2CCR2(OC2H4)nOCH3]2 (n = 0-3; R = H, Me) (2a-e) have been prepared by the reaction of [Cu2(OAc)4·2H2O] with CH3O(C2H4O)nCR2CO2H (1a-e). Upon reduction of 2a-e with triphenylphosphine, the corresponding tris(triphenylphosphine)copper(I) complexes 3a-e were obtained, which could be converted to the bis(triphenylphosphine)copper(I) complex...

To the best of our knowledge, this study is first to investigate effect chemical vapour etching (CVE) combined with copper decoration on both optical and catalytic activities silicon micro-particles (SiμPs). After exposure acid vapours emanating from a hot solution hydrogen fluoride/nitric (HF/HNO 3 ), scanning electron microscope images treated powder show formation porous, sponge-like structu...

The purpose of the present study was to elucidate the antimicrobial activity and mechanism of silver, platinum, palladium and copper nanoparticles on Proteus sp. and Klebsiella Sp. isolated from polluted water samples. This study investigated the growth of the two tested bacterial cells in order to observe the action of different concentrations of nanoparticles in addition to the effects on the...

A new set of 4,6,7,8-tetrahydroquinolin-5(1H)-ones were designed as cytotoxic agents against breast cancer cell line (MCF-7) and synthesised under ultrasonic irradiation using chitosan decorated copper nanoparticles (CS/CuNPs) catalyst. The compounds 4b, 4j, 4k, 4e exhibited the most potent activity IC50 values (0.002 − 0.004 µM) comparing to Staurosporine IC50; 0.005 μM. latter derivatives a p...

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 is higher than Hüttig Cu, smaller Cu particles are easier agglomerate. Therefore, there much interest constructing a with small particle size strong stability. In present work, effect introducing EDTA on catalysts systematically inve...