نتایج جستجو برای: copper oxide nanoparticles

تعداد نتایج: 340622  

2015
Diego C. B. Alves Rafael Silva Damien Voiry Tewodros Asefa Manish Chhowalla

Carbon dioxide (CO2) is one of the main gases produced by human activity and is responsible for the green house effect. Numerous routes for CO2 capture and reduction are currently under investigation. Another approach to mitigate the CO2 content in the atmosphere is to convert it into useful species such as hydrocarbon molecules that can be used for fuel. In this view, copper is one of the most...

2012
Shiliang Wang Xiaolin Huang Yuehui He Han Huang Yueqin Wu Lizhen Hou Xinli Liu Taimin Yang Jin Zou Baiyun Huang

Copper nanoparticles encapsulated by multi-layer graphene have been produced in large quantity (in grams) by metal-organic chemical vapor deposition at 600 C with copper(II) acetylacetonate powders as precursor. The obtained graphene/copper shell/core nanoparticles were found to be formed by a novel coalescence mechanism that is quite different from the well-known dissolution–precipitation mech...

2004
Toshihiro AIUCHI Shigeo NAKAJO

the development of metal-based therapeutics. Cisplatin is one platinum complex and is widely used in treatments for cancer. Shimizu and Tsuji established a method of preparing colloidal platinum particles, whose average size is 2 nm, by ethanol reduction of H2PtCl6 in the absence of protective agents such as hydrophilic polymers. They used only the chemicals permitted to food additives such as ...

2011
Gregor P Jose Subhankar Santra Swadhin K Mandal Tapas K Sengupta

The DNA degradation potential and anti-cancer activities of copper nanoparticles of 4-5 nm size are reported. A dose dependent degradation of isolated DNA molecules by copper nanoparticles through generation of singlet oxygen was observed. Singlet oxygen scavengers such as sodium azide and Tris [hydroxyl methyl] amino methane were able to prevent the DNA degradation action of copper nanoparticl...

Journal: :Chemosphere 2015
Yi-Hsuan Chou Jui-Hsuan Yu Yang-Min Liang Pin-Jan Wang Chi-Wang Li Shiao-Shing Chen

Wastewaters containing Cu(II) along with ligands are ubiquitous in various industrial sectors. Efficacy of treatment processes for copper removal, especially precipitation, is greatly debilitated by ligands. Chemical reduction being commonly employed for production of metal nanoparticles has also been used for removing copper. Addition of ammonia was reported to be essential for improving coppe...

A. Radhakrishnan B. Beena, P. Rejani,

Nano structured materials have wide range of applications due to their interesting size-dependent chemical and physical properties compared to particles of size in the range of micrometer. Copper oxide nano materials are of interest on account of their potential uses in many technological fields. In this study  CuO nanoparticles were synthesized via simple sol gel method using basic CuSO4<...

Journal: Nanomedicine Journal 2018

Objective (s): The green synthesis of copper nanoparticles using metabolites of microorganisms has gained much interest in recent years. In this work, it was studied optimization of copper nanoparticles synthesis using E. coli and its antifungal activity.Materials and Methods: The copper nanoparticles were synthesized by Escherichia coli. Effect of copper nitrate concentration and temperature w...

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