Thin Film Assembly of Gold Nanoparticles for Vapor Sensing via Droplet Interfacial Reaction
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2013年第5期
论文作者：Kun Luo Tao Huang Yujia Luo Haiming Wang Chao Sang Xiaogang Li
文章页码：401 - 405
摘 要：<正>A facile approach to prepare a thin film vapor sensor is demonstrated through droplet interfacial reaction on an IDA microelectrode.Scanning electron microscopy,atomic force microscopy and transmission electron microscopy analyses show that the film of the vapor sensor is composed of self-assembled gold nanocrystals in an average diameter of about 4.3 nm.The as-prepared sensor was examined by potential step method and impedance measurement,which exhibited significant A/?//?,responses and excellent cycle performance to the volatile organic compound（VOC） vapors of acetone,methanol,styrene,benzene,toluene and ethanol.The selectivity to the VOCs with benzene ring or organic solvents suggests that the sensor is probably in line with the swelling and dielectric sensing mechanisms.
Kun Luo1，Tao Huang1，Yujia Luo2，Haiming Wang1，Chao Sang1，Xiaogang Li1
1. Key Laboratory of New Processing Technology for Nonferrous Metals & Materials,Ministry of Education,College of Materials Science and Engineering,Guilin University of Technology2. China Medical University,Shenbei New District
摘 要：<正>A facile approach to prepare a thin film vapor sensor is demonstrated through droplet interfacial reaction on an IDA microelectrode.Scanning electron microscopy,atomic force microscopy and transmission electron microscopy analyses show that the film of the vapor sensor is composed of self-assembled gold nanocrystals in an average diameter of about 4.3 nm.The as-prepared sensor was examined by potential step method and impedance measurement,which exhibited significant A/?//?,responses and excellent cycle performance to the volatile organic compound（VOC） vapors of acetone,methanol,styrene,benzene,toluene and ethanol.The selectivity to the VOCs with benzene ring or organic solvents suggests that the sensor is probably in line with the swelling and dielectric sensing mechanisms.
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