Thin Film Assembly of Gold Nanoparticles for Vapor Sensing via Droplet Interfacial Reaction

作     者：Kun Luo Tao Huang Yujia Luo Haiming Wang Chao Sang Xiaogang Li 

作者机构：Key Laboratory of New Processing Technology for Nonferrous Metals & MaterialsMinistry of EducationCollege of Materials Science and EngineeringGuilin University of Technology China Medical UniversityShenbei New District 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2013年第29卷第5期

页      面：401-405页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.21163004) the Guangxi Natural Science Foundation(Grant No.2010GXNSFC013006) the Scientific Research Foundation for Returned Scholars,Ministry of Education of China 

主　　题：Gold nanoparticle Thin film Self-assembly Droplet interfacial reaction Vapor sensor 

摘      要：A facile approach to prepare a thin film vapor sensor is demonstrated through droplet interracial 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 △R/Ri 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.