Highly sensitive NO2 detection on ppb level by devices based on Pd-loaded In2O3 hierarchical microstructures

被引：87

作者：

Hu, Jie ^{[1
,2
]}

Liang, Yanfei ^{[1
,2
]}

Sun, Yongjiao ^{[1
,2
]}

Zhao, Zhenting ^{[1
,2
]}

Zhang, Meng ^{[1
,2
]}

Li, Pengwei ^{[1
,2
]}

Zhang, Wendong ^{[1
,2
]}

Chen, Yong ^{[3
,4
]}

Zhuiykov, Serge ^{[5
]}

机构：

[1] Taiyuan Univ Technol, Micro & Nano Syst Res Ctr, Key Lab Adv Transducers & Intelligent Control Sys, Minist Educ, Taiyuan 030024, Shanxi, Peoples R China

[2] Taiyuan Univ Technol, Coll Informat Engn, Taiyuan 030024, Shanxi, Peoples R China

[3] Kyoto Univ, Inst Integrated Cell Mat Sci, Kyoto 6068507, Japan

[4] UPMC Univ Paris 06, Sorbonne Univ, CNRS UMR PASTEUR 8640, Dept Chim,Ecole Normale Super,PSL Res Univ, 24 Rue Lhomond, F-75005 Paris, France

[5] Univ Ghent, Dept Appl Analyt & Phys Chem, Fac Biosci Engn, Global Campus,119 Songdomunhwa Ro, Incheon 21985, South Korea

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2017年 / 252卷

基金：

中国国家自然科学基金;

关键词：

Hydrothermal; Pd-loaded In2O3; Hierarchical microstructure; Nitrogen dioxide sensor; Gas sensing performance; CARBON-NANOTUBE TEMPLATES; GAS-SENSING PERFORMANCES; DOPED IN2O3; SNO2; NANOPARTICLES; AIR-POLLUTION; SENSOR; NANORODS; FILM;

D O I：

10.1016/j.snb.2017.05.113

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The special flower-like Pd-loaded indium oxide (In2O3) hierarchical microstructures with different Pd contents were successfully synthesized by a hydrothermal method, showing the features dimension of 5-7 mu m diameter and 30 nm thick nanosheets. Developed NO2 sensors based on 1 mol% Pd-loaded In2O3 hierarchical microstructures demonstrated excellent NO2 detection at the ppb levels at lower operating temperature of 110 degrees C. These sensors also exhibited high response, fast response (180s) and recovery (90 s) time and great reliability as well as simplicity in fabrication. Furthermore, selective detection of NO2 can be readily achieved with sensors attached with 1 mol% Pd-loaded In2O3 even with other common chemicals such as ethanol, CO, CH4 and H-2 around. The electron depletion theory was used to explain the enhanced gas sensing mechanism. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：116 / 126

页数：11

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