高等学校化学学报Issue(3)：632-639,8.DOI:10.7503/cjcu20140834
层层自组装法制备石墨烯/聚苯胺复合薄膜及在传感器中的应用
Layer-by-layer Assembled Graphene/Polyaniline Nanocomposite Film and Applied in Electrochemical Sensing
摘要
Abstract
A novel graphene-polyaniline nanocomposite thin film was prepared by means of electrostatic layer-by-layer(LBL) assembly of positive charged graphene sheets modified by poly(acrylic acid)(PAA-Gr) and negatively charged polyaniline( PANI) . The use of PAA not only enhanced the dispersibility of the graphene sheets, but also provided a positive charge to the graphene thus facilitating the growth of multilayered films. Ultraviolet-visible spectrophotometry was used in the present work to monitor the LBL assembly process of{PAA-Gr/PANI}n multilayered films. Fourier transform infrared spectroscopy, X-ray diffraction patterns, scanning electron microscopy and cyclic voltammetry results demonstrated the successful fabrication of {PAA-Gr/PANI}n hybrid multilayered films. Application of the {PAA-Gr/PANI}n hybrid film in electrochemical sensing was further demonstrated using H2 O2 as a model analyte. The {PAA-Gr/PANI}n hybrid film was shown to have excellent electrocatalytic activity towards H2 O2 . The proposed {PAA-Gr/PANI}n film based sensor exhibited a wide linear detection range for H2 O2 from 0. 005 mmol/L to 0. 3 mmol/L with a low detec-tion limit of 1 ×10-6 mol/L.关键词
石墨烯/聚苯胺/层层自组装/过氧化氢传感器Key words
Graphene/Polyaniline/Layer-by-layer assembly/Hydrogen peroxide sensor分类
化学化工引用本文复制引用
孙军,朱正意,赖健平,罗静,刘晓亚..层层自组装法制备石墨烯/聚苯胺复合薄膜及在传感器中的应用[J].高等学校化学学报,2015,(3):632-639,8.基金项目
国家自然科学基金(批准号:51103064,21174056)资助.Supported by the National Natural Science Foundation of China(Nos.51103064,21174056) （批准号:51103064,21174056）
