Hydrothermal synthesis of In2O3 for detecting H2S in air

被引：189

作者：

Xu, Jiaqiang ^{[1
]}

Wang, Xiaohua

Shen, Jianian

机构：

[1] Zhengzhou Univ Light Ind, Coll Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China

[2] Shanghai Univ, Inst Mat, Shanghai 200072, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2006年 / 115卷 / 02期

基金：

中国国家自然科学基金;

关键词：

hydrothermal reaction; indium oxide; nanomaterial; gas sensor;

D O I：

10.1016/j.snb.2005.10.038

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Nanocrystalline In2O3 gas sensing material was prepared by sintering a precursor In(OH)(3) at 600 degrees C which was hydrothermally synthesized at 250 degrees C for 24 h by using InCl(3)(.)4H(2)O as a starting material. The nanopowder was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetry-differential scanning calorimetry (TG-DSC) and X-ray photoelectron spectrometer (XPS). The results indicated that the precursor of indium oxide was cubic indium hydroxide with range size of 50-80 nm, and indium oxide was composed of In and O. Gas sensing properties of the sensors were tested by mixing a gas in air at static state, the tested results showed that the sensor based on In2O3 nanocrystals had satisfying H2S gas sensing properties at rather low temperature. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：642 / 646

页数：5

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