H2S gas sensing, properties of CuO-functionalized WO3 nanowires

被引：91

作者：

Park, Suyoung ^{[1
]}

Park, Sunghoon ^{[1
]}

Jung, Jihwan ^{[1
]}

Hong, Taeseop ^{[1
]}

Lee, Sangmin ^{[2
]}

Kim, Hyoun Woo ^{[3
]}

Lee, Chongmu ^{[1
]}

机构：

[1] Inha Univ, Dept Mat Sci & Engn, Inchon 402751, South Korea

[2] Inha Univ, Dept Elect Engn, Inchon 402751, South Korea

[3] Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

WO3; nanowires; SnO2; nanorods; Gas sensors; CuO-functionalization; TUNGSTEN-OXIDE; THIN-FILMS; SENSITIVITY; SENSORS; PD;

D O I：

10.1016/j.ceramint.2014.03.120

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper compares the H2S gas sensing properties of CuO-functionalized WO3 nanowires with those of CuO-functionalized SnO2 nanorods to see the relative contributions of the nanowire material (WO3 or SnO2) and functionalization material (CuO) to H2S gas sensing properties. Multiple networked CuO-functionalized WO3 nanowire sensors showed electrical responses to H2S gas at 300 degrees C comparable to their CuO-functionalized SnO2 nanorod counterparts. The CuO-functionalized WO3 nanowires and CuO-functionalized SnO2 nanorods exhibited responses of similar to 673% and similar to 798%, respectively, to 100 ppm H2S at 300 degrees C. The ratio of the response of CuO-functionalized WO3 nanowires to H2S gas to that of pristine WO3 nanowires was 3.65, whereas the ratio of the response of CuO-functionalized SnO2 nanorods to H2S gas to that of pristine SnO2 nanorods was 3.84. Differences in sensing mechanism between CuO-functionalized WO3 nanowires and CuO-functionalized SnO2 nanorods are also discussed. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：11051 / 11056

页数：6

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