Different morphologies of ZnO nanorods and their sensing property

Bai Shouli, Chen Liangyuan, Li Dianqing, Yang Wensheng, Yang Pengcheng, Liu Zhiyong, Chen Aifan, Chung Chiun Liu

研究成果: 雜誌貢獻期刊論文同行評審

146 引文 斯高帕斯(Scopus)

摘要

Different morphologies of one-dimensional (1D) ZnO nanocrystals were successfully synthesized by hydrothermal process with cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS) and polyethylene glycol (PEG) assisted. The morphology and structure of crystals were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis. Gas sensors have been fabricated using the 1D ZnO crystals to examine the responses to NO2 and CO gases over a range of operating temperature from 150 to 450 °C. The effect of surfactant and calcination condition, as well as morphologies obtained by different synthesized methods on sensing property were systematically investigated. The response of NO2 was greatly enhanced from 239.5 to 470.0 by the addition of 5% cadmium element as dopant during CTAB-assisted low temperature hydrothermal process. The effect of Cd loading on the gas sensing property and the sensing mechanism were discussed.

原文???core.languages.en_GB???
頁(從 - 到)129-137
頁數9
期刊Sensors and Actuators, B: Chemical
146
發行號1
DOIs
出版狀態已出版 - 8 4月 2010

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