Highly improved toluene gas-sensing performance of mesoporous Ag-anchored cobalt oxides nanowires

被引：23

作者：

Yue, J. H. ^{[1
]}

Wang, L. ^{[1
]}

Xu, J. C. ^{[1
]}

Jin, H. X. ^{[1
]}

Hong, B. ^{[1
]}

Jin, D. F. ^{[1
]}

Gong, J. ^{[1
]}

Peng, X. L. ^{[1
]}

Ge, H. L. ^{[1
]}

Wang, X. Q. ^{[1
]}

机构：

[1] China Jiliang Univ, Coll Mat Sci & Chem, Hangzhou 310018, Peoples R China

来源：

ADVANCED POWDER TECHNOLOGY | 2022年 / 33卷 / 11期

关键词：

Ag-loading; Microstructure; Toluene gas; Gas-sensing performance; ORGANIC FRAMEWORK; CARBON-MONOXIDE; OPTICAL-PROPERTIES; CO3O4; NANOPARTICLES; NANOCATALYSTS; MECHANISM; VOCS; WO3;

D O I：

10.1016/j.apt.2022.103832

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Mesoporous cobalt oxides nanowires (Co3O4 NWs) were synthesized by the nanocasting method, and then Ag nanoparticles with the different content were anchored on the surface of Co3O4 NWs. The exper-imental results indicate that Ag nanoparticles hardly affect the morphology and microstructure of Co3O4 NWs and actually exist on the surface of Co3O4 NWs. It is worth mentioning that Ag-loading greatly improves the toluene gas-sensing performance of Ag-anchored Co3O4 NWs. The operating temperature of Ag-anchored Co3O4 NWs sensors decreases from 210 degrees C for Co3O4 NWs sensor to 190 degrees C, while the response to 100 ppm toluene gas increases 3-folds. Ag0.166-Co3O4 NWs sensor exhibits the best gas -sensing performance due to the optimal Ag-loading content. Ag nanoparticles not only provide more effective oxygen adsorption sites to reduce resistance in air, but also form metal-semiconductor hetero-junctions at the Ag/Co3O4 interface to increase resistance in toluene gas. In this way, Ag-loading can fur-ther improve the gas-sensing performance of mesoporous Ag-anchored Co3O4 NWs sensors to toluene gas.(c) 2022 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

引用

页数：9

共 33 条

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