Strain-regulated sensing properties of α-Fe2O3 nano-cylinders with atomic carbon layers for ethanol detection
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2021年第9期
论文作者：Huajing Xiong Jianan Fu Jinyao Li Rashad Ali Hong Wang Yifan Liu Hua Su Yuanxun Li Woon-Ming Lau Nasir Mahmood Chunhong Mu Xian Jian
文章页码：132 - 139
摘 要：The sensitivity of ethanol sensor is of paramount importance in a variety of areas,including chemical production with ethanol,alcohol testing for driving safety,etc.Herein,α-Fe2 O3 nano-cylinders with atomic carbon layers are synthesized,for the first time,through in-situ catalytic chemical vapor deposition combined with hydrothermal techniques for the detection of ethanol.The reported α-Fe2 O3@C nano-cylinders with double surficial strain effects deliver an ethanol detection sensitivity of 8 times as compared with α-Fe2 O3 nano-cylinders,10 times higher as compared with its detection sensitivity to ammonia,para-xylene,methanol and benzene.The sensor also exhibits over-14-day operation stability and the minimum detection limit of 10 ppm.To our best knowledge,the performances surpass those of previously reported α-Fe2 O3.Such attractive performances are attributed to the enhanced charge transfer in α-Fe2 O3 owing to the double surficial strain effects of α-Fe2 O3@C nano-cylinders and the efficient adsorption of ethanol with atomic carbon layers.
Huajing Xiong1,2，Jianan Fu1，Jinyao Li1，Rashad Ali1，Hong Wang1，Yifan Liu1，Hua Su3,4，Yuanxun Li3,4，Woon-Ming Lau5，Nasir Mahmood1,6，Chunhong Mu1，Xian Jian1,7
1. School of Materials and Energy, University of Electronic Science and Technology of China2. Institute of Chemistry, National Institute of Measurement and Testing Technology of China3. School of Electronic Science and Engineering, University of Electronic Science and Technology of China5. Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China6. School of Engineering, RMIT University7. National Engineering Research Center of Electromagnetic Radiation Control Materials, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China
摘 要：The sensitivity of ethanol sensor is of paramount importance in a variety of areas,including chemical production with ethanol,alcohol testing for driving safety,etc.Herein,α-Fe2 O3 nano-cylinders with atomic carbon layers are synthesized,for the first time,through in-situ catalytic chemical vapor deposition combined with hydrothermal techniques for the detection of ethanol.The reported α-Fe2 O3@C nano-cylinders with double surficial strain effects deliver an ethanol detection sensitivity of 8 times as compared with α-Fe2 O3 nano-cylinders,10 times higher as compared with its detection sensitivity to ammonia,para-xylene,methanol and benzene.The sensor also exhibits over-14-day operation stability and the minimum detection limit of 10 ppm.To our best knowledge,the performances surpass those of previously reported α-Fe2 O3.Such attractive performances are attributed to the enhanced charge transfer in α-Fe2 O3 owing to the double surficial strain effects of α-Fe2 O3@C nano-cylinders and the efficient adsorption of ethanol with atomic carbon layers.
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