Self-Assembled Ionic Liquid-Phosphomolybdic Acid/Reduced Graphene Oxide Composite Modified Electrode for Sensitive Determination of Dopamine

被引：7
作者：
Zhao, Qiyan [1 ]
Zhang, Feifei [1 ]
Xia, Jianfei [1 ]
Li, Jinhua [1 ]
Gui, Rijun [1 ]
Xia, Yanzhi [1 ]
Wang, Zonghua [1 ]
机构：
[1] Qingdao Univ, Coll Chem & Chem Engn,Shandong Sinojapanese Ctr C, Collaborat Innovat Ctr Marine Biomass Fiber Mat &, Lab Fiber Mat & Modern Text,Growing Base State Ke, Qingdao 266071, Peoples R China
来源：
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | 2017年 / 6卷 / 06期
基金：
中国国家自然科学基金;
关键词：
ASCORBIC-ACID; URIC-ACID; FUNCTIONALIZED GRAPHENE; OXIDATION; POLYANILINE; MONOLAYERS; REDUCTION; GRAPHITE; SENSORS; SURFACE;
D O I：
10.1149/2.0041706jss
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel reduced graphene oxide (RGO) coated glassy carbon electrode (IL-PMo12/RGO/GCE) modified with ionic liquid (IL, [BMIM][BF4]) and phosphomolybdic acid (PMo12, H3PMo12O48) was fabricated via electrostatic self-assembling. The phosphomolybdic acid anionic monolayer could electrostatically adsorbed ionic liquid cations to form an organic and inorganic hybrid film on graphene sheets. The modified electrode was used for the determination of dopamine (DA) in the presence of uric acid (UA). This electrode anticipated the good electron mobility and large surface area of graphene, high ionic conductivity of ionic liquid besides the electron transfer property of phosphomolybdic acid. Optimization of the sensor's performance is presented and resulted in a better current signal. The linear range of the modified electrode was from 0.1-100 mu M for determination of DA with an R-Square 0.9924 and with a detection limit of 3.3 x 10(-8) M (S/N = 3). The IL-PMo12/RGO/GCE also presented good stability and reproducibility. (C) The Author(s) 2016. Published by ECS.
引用
收藏
页码：M3014 / M3018
页数：5
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