Enhanced ethanol-sensing characteristics of Au decorated In-doped SnO2 porous nanotubes at low working temperature

被引：23

作者：

Chen, Long ^{[1
]}

Shi, Haozhou ^{[1
]}

Ye, Chenjia ^{[1
]}

Xia, Xiaoyu ^{[1
]}

Li, Yi ^{[1
]}

Pan, Chenying ^{[1
]}

Song, Yanhua ^{[1
]}

Liu, Jun ^{[1
]}

Dong, Hao ^{[2
]}

Wang, Di ^{[2
]}

Chen, Xing ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Biomed Engn, Biosensor Natl Special Lab, Hangzhou 310027, Peoples R China

[2] Intelligent Percept Res Inst, Zhejiang Lab, Hangzhou, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2023年 / 375卷

基金：

中国国家自然科学基金;

关键词：

Electrospinning; SnO2; Porous nanotubes; Ethanol gas sensor; MICRO GAS SENSOR; IN2O3; NANOFIBERS; ROOM-TEMPERATURE; PERFORMANCE; NANORODS; FABRICATION;

D O I：

10.1016/j.snb.2022.132864

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, Au decorated In-doped SnO2 (Au@In2O3-SnO2) porous nanotubes (PNTs) were fabricated via electrospinning and a subsequent calcination treatment. The In-doped SnO2 PNTs with various Au/Sn molar ratios possessed good ethanol sensing properties. As a result, the 3 % mol Au decorated In-doped SnO2 PNTs had high response to ethanol (Ra/Rg = 316.8-100 ppm) and can detect ethanol down to 50 ppb at a low working temperature of 150 degrees C. In addition, the gas sensor also had high selectivity, good reversibility and long-term stability. The enhanced sensing performance was mainly ascribed to the increase of oxygen vacancies, cata-lytic activity of Au nanocatalysts, and porous structures. The sensing results demonstrated that Au@In2O3-SnO2 PNTs had the great potential for ethanol detecting, and provide a facile method for rationally designing other types of gas sensors.

引用

页数：10

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