Gas sensing properties of nano-ZnO prepared by arc plasma method

被引：201

作者：

Dong, LF ^{[1
]}

Cui, ZL ^{[1
]}

Zhang, ZK ^{[1
]}

机构：

[1] Qingdao Inst Chem Technol, Res Ctr Nanostruct Mat, Qingdao 266042, Peoples R China

来源：

NANOSTRUCTURED MATERIALS | 1997年 / 8卷 / 07期

关键词：

D O I：

10.1016/S0965-9773(98)00005-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanometer ZnO, ZnO-Fe were prepared by H-2+Ar are plasma method. Compared with coarse-grained ZnO, nano-ZnO evidently possesses grain-size effect and the operating temperatures shift toward a lower temperature (200 degrees C-300 degrees C). The sensitivity of ZnO increases with decreasing grain size. Nano-ZnO exhibits higher sensitivities to LPG and C2H2 than to H2 and CO. Compared with nano-ZnO and ZnO-Ag, nano-ZnO-Fe-Ag exhibits excellent selectivity to H-2 with high sensitivity at < 200 degrees C and the response time is less than 15s. Thus, nano-ZnO-Fe-Ag holds promise as a low-power selective H-2 gas sensor. (C) 1998 Acta Metallurgica Inc.

引用

页码：815 / 823

页数：9

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