نتایج جستجو برای: نانوپودر zno

تعداد نتایج: 19900  

Journal: :ACS applied materials & interfaces 2012
Yuan-Ming Chang Man-Ling Lin Tung-Yen Lai Hsin-Yi Lee Chih-Ming Lin Yew-Chung Sermon Wu Jenh-Yih Juang

The structural and optoelectronic properties of ZnO nanopillars (ZnO-NPs) grown on Si substrates by the vapor transport deposition method were investigated. In particular, by varying the deposition duration and hence the morphology of the vertically aligned ZnO-NPs, the resultant field emission characteristics were systematically compared. In addition to identifying the advantageous field emiss...

2017
Hairui Liu Haifa Zhai Chunjie Hu Jien Yang Zhiyong Liu

In2O3 nanoparticles hybrid twins hexagonal disk (THD) ZnO with different ratios were fabricated by a hydrothermal method. The as-obtained ZnO/In2O3 composites are constituted by hexagonal disks ZnO with diameters of about 1 μm and In2O3 nanoparticles with sizes of about 20-50 nm. With the increase of In2O3 content in ZnO/In2O3 composites, the absorption band edges of samples shifted from UV to ...

2016
Elena Dilonardo Michele Penza Marco Alvisi Cinzia Di Franco Francesco Palmisano Luisa Torsi Nicola Cioffi

A one-step electrochemical method based on sacrificial anode electrolysis (SAE) was used to deposit stabilized gold nanoparticles (Au NPs) directly on the surface of nanostructured ZnO powders, previously synthesized through a sol-gel process. The effect of thermal annealing temperatures (300 and 550 °C) on chemical, morphological, and structural properties of pristine and Au-doped ZnO nancompo...

2009
Karuppanan Senthil Youngjo Tak Minsu Seol Kijung Yong

ZnO nanowire-CdO composite nanostructures were fabricated by a simple two-step process involving ammonia solution method and thermal evaporation. First, ZnO nanowires (NWs) were grown on Si substrate by aqueous ammonia solution method and then CdO was deposited on these ZnO NWs by thermal evaporation of cadmium chloride powder. The surface morphology and structure of the synthesized composite s...

2011
Chingting Lee Ying-Shuo Chiu Shu-Ching Ho Yao-Jung Lee

A vapor cooling condensation system was used to deposit high quality intrinsic ZnO thin films and intrinsic ZnO nanorods as the sensing membrane of extended-gate field-effect-transistor (EGFET) glucose biosensors. The sensing sensitivity of the resulting glucose biosensors operated in the linear range was 13.4 μA mM(-1) cm(-2). To improve the sensing sensitivity of the ZnO-based glucose biosens...

2015
Wei-Yu Chen Yi-Hsien Cheng Nan-Hung Hsieh Bo-Chun Wu Wei-Chun Chou Chia-Chi Ho Jen-Kun Chen Chung-Min Liao Pinpin Lin

Zinc oxide nanoparticles (ZnO NPs) have been widely used in consumer products, therapeutic agents, and drug delivery systems. However, the fate and behavior of ZnO NPs in living organisms are not well described. The purpose of this study was to develop a physiologically based pharmacokinetic model to describe the dynamic interactions of (65)ZnO NPs in mice. We estimated key physicochemical para...

2010
XL Li C Li Y Zhang DP Chu WI Milne HJ Fan

In this article, direct coating of ZnO on PECVD-grown multi-walled carbon nanotubes (MWCNTs) is achieved using atomic layer deposition (ALD). Transmission electron microscopy investigation shows that the deposited ZnO shell is continuous and uniform, in contrast to the previously reported particle morphology. The ZnO layer has a good crystalline quality as indicated by Raman and photoluminescen...

2017
Lina Long Jiashun Chen Yonggang Zhang Xiao Liang Hengjia Ni Bin Zhang Yulong Yin

The aim of this study was to compare the effect of dietary supplementation with low dose of porous and nano zinc oxide (ZnO) on weaning piglets, and to evaluate the possibility of using them as an alternative to high dose of regular ZnO. Piglets were randomly allocated into four treatment groups fed with four diets: (1) basal diet (NC), (2) NC+ 3000 mg/kg ZnO (PC), (3) NC + 500 mg/kg porous ZnO...

2016
Hua-Qiao Tang Min Xu Qian Rong Ru-Wen Jin Qi-Ji Liu Ying-Lun Li

Zinc oxide (ZnO) is widely incorporated as a food additive in animal diets. In order to optimize the beneficial effects of ZnO and minimize any resultant environmental pollution, ZnO nanoparticles are often used for delivery of the zinc. However, the possible toxic effects of ZnO nanoparticles, including effects on cytochrome P450 (CYP450) enzymes, have not been evaluated. In this study, we inv...

Journal: :Environmental science. Processes & impacts 2014
Chuanjia Jiang Heileen Hsu-Kim

The wide use of metal-based nanomaterials such as zinc oxide (ZnO) nanoparticles (NPs) has generated concerns regarding their environmental and health risks. For ZnO NPs, their toxicity in aquatic systems often depends on the release of dissolved zinc species, and the rate of dissolution is influenced by water chemistry, including the presence of zinc-chelating ligands. A challenge, however, re...

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