Preparation and Characterization of Chitosan-Graphene Transducer Assembled via Vacuum Assisted Self-assembly (VASA) Method for Trimethylamine Sensing

详细信息    查看全文

• 作者：Rey Alfred G. Rañ ; ola^a ; ^b ; ^{ragranola@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Fortunato B. Sevilla III^a ; ^c ; ^{fbsevilla@mnl.ust.edu.ph" class="auth_mail" title="E-mail the corresponding author}
• 关键词：graphene nanocomposite ; vacuum assisted self-assembly ; chemiresistor ; trimethylamine
• 刊名：Procedia Chemistry
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：20
• 期：Complete
• 页码：102-104
• 全文大小：302 K

文摘

A reduced graphene oxide/chitosan (rGO/Chi) nanocomposite film for chemoresistive trimethylamine sensing was prepared by solution-phase mixing and deposited on nylon membrane via vacuum assisted self-assembly (VASA) method. The film was analysed using Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The electrical property of the prepared films were measured by four-point probe measurement. Using 0.40% volume fraction (v.f) it was exposed to trimethylamine vapour and its electrical resistance quickly changed. The composite film sensor exhibited linear range from 23 to 230mg/L (r²= 0.9774) and the calculated limit of detection was 20.56mg/L. It exhibited a repeatable response to trimethylamine gas.