稀有金属(英文版)2024,Vol.43Issue(9) :4412-4424.DOI:10.1007/s12598-024-02712-x

Grain boundary-induced drastic sensing performance enhancement of Fe2O3 gas sensors for acetone

Tian-Jun Hu Yi-Fan Li Yu-Zhu Tian Ying Wang Ya-Ru Chen Jun-Ming Zhang Er-Gui Luo Jian-Feng Jia
稀有金属(英文版)2024,Vol.43Issue(9) :4412-4424.DOI:10.1007/s12598-024-02712-x

Grain boundary-induced drastic sensing performance enhancement of Fe2O3 gas sensors for acetone

Tian-Jun Hu 1Yi-Fan Li 1Yu-Zhu Tian 1Ying Wang 1Ya-Ru Chen 1Jun-Ming Zhang 1Er-Gui Luo 1Jian-Feng Jia1
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作者信息

  • 1. Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education,School of Chemical and Material Science,Shanxi Normal University,Taiyuan 030032,China
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Abstract

Exploring the structure-activity relationship between the performance of gas sensors and the structure of semiconductor metal oxide(SMO)nanomaterials is crucial for understanding and designing gas-sensing materials and overcoming the application limitations of SMO-based gas sensors.Regulation of a single SMO microstructure provides a promising solution to address this scientific problem due to its controllable composition.In this study,we control the grain boundary(GB)density of Fe2O3 nanomaterials using a simple solvothermal method.They have similar chemical compositions and crystal phases,providing an ideal platform for studying the influence of the GB density on the gas-sensing perfor-mance.Gas-sensing tests showed that the Fe2O3-1 sensor with medium GB density and the Fe2O3-2 sensor with high GB density had higher sensitivity and selectivity than the Fe2O3-0 sensors with low GB density before reaching the optimal operating temperature.However,when the GB density increased,the response to acetone decreased slightly,whereas the optimal operating temperature decreased.This work highlights the unique performance of the GB density in enhancing the gas sensitivity of a single SMO.

Key words

Semiconductor metal oxide(SMO)/Grain boundary(GB)density/Oxygen adsorption/Charge transfer/Gas sensors

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基金项目

National Natural Science Foundation of China(21571119)

National Natural Science Foundation of China(22209102)

Program for New Century Excellent Talents in University of Ministry of Education of China(NCET-12-1035)

Natural Science Foundation of Shanxi Province(202203021211253)

Natural Science Foundation of Shanxi Province(20210302124473)

Postgraduate Innovation Project of Shanxi Normal University(2022XSY022)

China Postdoctoral Science Foundation(2021M691366)

出版年

2024
稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子:0.801
ISSN:1001-0521
参考文献量2
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