Preparation and gas sensitivity of SnO2 nanopowder homogenously doped with Pt nanoparticles

被引：45

作者：

Lee, Young-In ^{[1
]}

Lee, Kun-Jae ^{[1
]}

Lee, Don-Hee ^{[1
,2
]}

Jeong, Young-Keun ^{[3
]}

Lee, Hee Soo ^{[3
]}

Choa, Yong-Ho ^{[1
]}

机构：

[1] Hanyang Univ, Dept Fine Chem Engn, Ansan 426791, South Korea

[2] LG Elect Inst Technol, Seoul 137724, South Korea

[3] Pusan Natl Univ, Natl Core Res Ctr Hybrid Mat Solut, Pusan 609735, South Korea

来源：

CURRENT APPLIED PHYSICS | 2009年 / 9卷

关键词：

Tin oxide; Platinum; Gas sensor; Zeta potential; Catalyst; SENSING PROPERTIES; SENSORS; ADDITIVES;

D O I：

10.1016/j.cap.2008.08.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Platinum (Pt)-doped SnO2 nanopowders were prepared by a new doping method which controls the surface charge by controlling the pH. Individual Pt particles were homogenously doped on the surface of the SnO2 nanoparticles at pH 6. Subsequently, a heat treatment was conducted in a hydrogen atmosphere to remove contaminants and to increase the number of oxygen vacancies of the SnO2 nanopowders. To recognize the sensitivity of the powders, Pt-doped SnO2 gas sensors were fabricated using a dispensing technology on a silicon substrate and tested at 400 degrees C in ethanol and formaldehyde gas, and then compared with sensors fabricated with commercial powders. The test results showed that the SnO2 gas sensors homogenously doped with Pt have sufficient sensitivity for detecting reducing gas. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：S79 / S81

页数：3

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