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

页码：489 / 493

页数：5

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