نتایج جستجو برای: cuo nanoparticle

تعداد نتایج: 34780  

2015
Sini Kuriakose D K Avasthi Satyabrata Mohapatra

ZnO-CuO nanocomposite thin films were prepared by carbothermal evaporation of ZnO and Cu, combined with annealing. The effects of 90 MeV Ni(7+) ion irradiation on the structural and optical properties of ZnO-CuO nanocomposites were studied by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV-visible absorption spectroscopy and Raman spectroscopy. XRD studies...

Journal: :Journal of the Royal Society, Interface 2010
Z Yang Z W Liu R P Allaker P Reip J Oxford Z Ahmad G Ren

Although nanoparticles have tremendous potential for a host of applications, their adverse effects on living cells have raised serious concerns recently for their use in the healthcare and consumer sectors. As regards the central nervous system (CNS), research data on nanoparticle interaction with neurons has provided evidence of both negative and positive effects. Maximal application dosage of...

2014
Chen Wang Drew Higgins Fangfang Wang Deyu Li Ruiqing Liu Guofeng Xia Ning Li Qing Li Hui Xu Gang Wu

: [email protected] Abstract Three different morphology controlled copper oxide materials (porous microspheres, flower-like, and thorn-like CuO) were prepared by facile and environmentally friendly processes, which were further investigated for their electrochemical properties and performance at lithium-ion battery anodes. CuO microspheres were prepared by simply solution chemistry, whereas flow...

2015
Maryam Shafagh Fatemeh Rahmani Norouz Delirezh

OBJECTIVES This study focused on determining cytotoxic effects of copper oxide nanoparticles (CuO NPs) on chronic myeloid leukemia (CML) K562 cell line in a cell-specific manner and its possible mechanism of cell death. We investigated the cytotoxicity of CuO NPs against K562 cell line (cancerous cell) and peripheral blood mononuclear cell (normal cell). MATERIALS AND METHODS The toxicity was...

Journal: :Physical review letters 2012
Guangxi Jin Kun Cao Guang-Can Guo Lixin He

Cupric oxide is a unique magnetic ferroelectric material with a transition temperature significantly higher than the boiling point of liquid nitrogen. However, the mechanism of high-T(c) multiferroicity in CuO remains puzzling. In this Letter, we clarify the mechanism of high-T(c) multiferroicity in CuO by using combined first-principles calculations and an effective hamiltonian model. We find ...

2012
Hui Wang Jin-Zhong Xu Jun-Jie Zhu Hong-Yuan Chen

CuO nanoparticles with an average size of ca. 4 nm have been successfully prepared by microwave irradiation, using copper (II) acetate and sodium hydroxide as the starting materials and ethanol as the solvent. The CuO nanoparticles are characterized by using techniques such as X-ray powder diffraction, transmission electron microscopy, selected area electron diffraction, X-ray photoelectron spe...

1997
Zhijiang Li Maria Flytzani-Stephanopoulos

Binary Cu-Cr-O and Cu-Ce-O oxides were studied in this work as regenerable sorbents for high-temperature fuel gas desulfurization. CuO-Cr2O3 and CuO-CeO2 sorbents can remove H2S from simulated coal-derived fuel gas to less than 5-10 ppmv in the temperature range of 650-850 °C. The presence of stable CuCr2O4 in CuO-Cr2O3 solids retains some copper in the Cu2+ or Cu1+ oxidation state, which can a...

Journal: :Applied and environmental microbiology 2013
Jingrang Lu Ian Struewing Helen Y Buse Jiahui Kou Howard A Shuman Sébastien P Faucher Nicholas J Ashbolt

Copper ions are an effective antimicrobial agent used to control Legionnaires' disease and Pontiac fever arising from institutional drinking water systems. Here, we present data on an alternative bactericidal agent, copper oxide nanoparticles (CuO-NPs), and its efficacy on Legionella pneumophila. In broth cultures, the CuO-NPs caused growth inhibition, which appeared to be concentration and exp...

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