نتایج جستجو برای: hybridized zno

تعداد نتایج: 25490  

2017
Yuan-Chang Liang Tsai-Wen Lung Nian-Cih Xu

In this study, ZnO-Sn2S3 core-shell nanorod heterostructures were synthesized by sputtering Sn2S3 shell layers onto ZnO rods. The Sn2S3 shell layers consisted of sheet-like crystallites. A structural analysis revealed that the ZnO-Sn2S3 core-shell nanorod heterostructures were highly crystalline. In comparison with ZnO nanorods, the ZnO-Sn2S3 nanorods exhibited a broadened optical absorption ed...

2017
Young-Jin Byun Chul Young Lee Myeong Hyeon Kim Dae Yun Jung Jeong Hee Han Insurk Jang Young Min Song Byung-Chul Park

Background Dietary supplementation of zinc oxide (ZnO) to 2000 to 4000 mg/kg is known to be effective for the prevention and treatment of post-weaning diarrhea in the pig. Such a 'pharmacological' supplementation, however, can potentially result in environmental pollution of the heavy metal, because dietary ZnO is mostly excreted unabsorbed. Two experiments (Exp.) were performed in the present ...

2015
Yi-Huang Hsueh Wan-Ju Ke Chien-Te Hsieh Kuen-Song Lin Dong-Ying Tzou Chao-Lung Chiang Ali Al-Ahmad

Zinc oxide nanoparticles (ZnO NPs) are an important antimicrobial additive in many industrial applications. However, mass-produced ZnO NPs are ultimately disposed of in the environment, which can threaten soil-dwelling microorganisms that play important roles in biodegradation, nutrient recycling, plant protection, and ecological balance. This study sought to understand how ZnO NPs affect Bacil...

Journal: :Science and technology of advanced materials 2008
Nagarajan Padmavathy Rajagopalan Vijayaraghavan

In this study, we investigate the antibacterial activity of ZnO nanoparticles with various particle sizes. ZnO was prepared by the base hydrolysis of zinc acetate in a 2-propanol medium and also by a precipitation method using Zn(NO3)2 and NaOH. The products were characterized by x-ray diffraction (XRD) analysis, transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy. Ba...

2015
Zheng-Yong Zhang Huan-Ming Xiong

During the past decades, numerous achievements concerning luminescent zinc oxide nanoparticles (ZnO NPs) have been reported due to their improved luminescence and good biocompatibility. The photoluminescence of ZnO NPs usually contains two parts, the exciton-related ultraviolet (UV) emission and the defect-related visible emission. With respect to the visible emission, many routes have been dev...

2014
Kim Guan Saw Sau Siong Tneh Gaik Leng Tan Fong Kwong Yam Sha Shiong Ng Zainuriah Hassan

The current-voltage characteristics of Ni contacts with the surfaces of ZnO thin films as well as single crystal (0001) ZnO substrate are investigated. The ZnO thin film shows a conversion from Ohmic to rectifying behavior when annealed at 800°C. Similar findings are also found on the Zn-polar surface of (0001) ZnO. The O-polar surface, however, only shows Ohmic behavior before and after anneal...

2014
Mohankandhasamy Ramasamy Minakshi Das Seong Soo A An Dong Kee Yi

The wide-scale applications of zinc oxide (ZnO) nanoparticles (NPs) in photocatalysts, gas sensors, and cosmetics may cause toxicity to humans and environments. Therefore, the aim of the present study was to reduce the toxicity of ZnO NPs by coating them with a silica (SiO2) layer, which could be used in human applications, such as cosmetic preparations. The sol-gel method was used to synthesiz...

Journal: :Nanotechnology 2009
C Y Lee J Y Wang Y Chou C L Cheng C H Chao S C Shiu S C Hung J J Chao M Y Liu W F Su Y F Chen C F Lin

We report bright white-light electroluminescence (EL) from a diode structure consisting of a ZnO nanorod (NR) and a p-type conducting polymer of poly(fluorine) (PF) fabricated using a hydrothermal method. ZnO NRs are successfully grown on an organic layer of PF using a modified seeding layer. The EL spectrum shows a broad emission band covering the entire visible range from 400 to 800 nm. White...

Journal: :Small 2015
Dali Shao Jian Gao Guoqing Xin Yiping Wang Lu Li Jian Shi Jie Lian Nikhil Koratkar Shayla Sawyer

An environmentally friendly, low-cost, and large-scale method is developed for fabrication of Cl-doped ZnO nanowire arrays (NWAs) on 3D graphene foam (Cl-ZnO NWAs/GF), and investigates its applications as a highly efficient field emitter and photocatalyst. The introduction of Cl-dopant in ZnO increases free electrons in the conduction band of ZnO and also leads to the rough surface of ZnO NWAs,...

2012
Chung-Yuan Kung San-Lin Young Hone-Zern Chen Ming-Cheng Kao Lance Horng Yu-Tai Shih Chen-Cheng Lin Teng-Tsai Lin Chung-Jen Ou

One-dimensional pure zinc oxide (ZnO) and Y-doped ZnO nanorod arrays have been successfully fabricated on the silicon substrate for comparison by a simple hydrothermal process at the low temperature of 90°C. The Y-doped nanorods exhibit the same c-axis-oriented wurtzite hexagonal structure as pure ZnO nanorods. Based on the results of photoluminescence, an enhancement of defect-induced green-ye...

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