Synthesis, characterization, and gas-sensing property for HCHO of Ag-doped In2O3 nanocrystalline powders

被引：45
作者：
Wang, Jinxing [1 ]
Zou, Bo [1 ]
Ruan, Shengping [2 ]
Zhao, Jing [1 ]
Wu, Fengqing [1 ]
机构：
[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China
[2] Jilin Univ, Dept Elect Engn, Changchun 130012, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 117卷 / 2-3期
基金：
中国国家自然科学基金;
关键词：
Semiconductors; Sol-gel; Formaldehyde sensors; Electrical properties; NIO THIN-FILM; NANOPARTICLE LAYERS; FORMALDEHYDE; SENSORS; TEMPERATURE; SNO2; CATALYSTS; CERAMICS; SIZE; AU;
D O I：
10.1016/j.matchemphys.2009.06.045
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Pure and Ag-doped In2O3 nanocrystalline powders with different doping concentrations have been prepared by a sol-gel method, and characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectrum (XPS). The results indicated that these powders had a good crystalline structure with an average crystallite size of 12 nm. The indirect heating structure sensors were fabricated by loading these powders on ceramic tubes with Au electrodes. Gas-sensing measurements indicated that the sensor fabricated from 8 wt.% Ag-doped In2O3 could detect HCHO gas down to 2 ppm with a short response time (10-15 s) and an excellent selectivity at 100 degrees C. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：489 / 493
页数：5
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