Electrochemical behavior of metal-organic framework MIL-101 modified carbon paste electrode: An excellent candidate for electroanalysis

被引：84
作者：
Li, Yuzhi [1 ]
Chao Huangfu [1 ]
Du, Haijun [2 ]
Liu, Wenbin [1 ]
Li, Yingwei [1 ]
Ye, Jianshan [1 ]
机构：
[1] S China Univ Technol, Coll Chem & Chem Engn, Guangzhou 510641, Guangdong, Peoples R China
[2] Guizhou Minzu Univ, Sch Chem & Environm Sci, Guizhou 550025, Peoples R China
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2013年 / 709卷
关键词：
Metal-organic framework; Carbon paste electrode; Electrocatalysis; Dopamine; Uric acid; SELECTIVE OXIDATION; HETEROGENEOUS CATALYST; ASCORBIC-ACID; COMPOSITE; DOPAMINE; ZEOLITE; DESIGN; ADSORPTION; REDUCTION; NANOTUBE;
D O I：
10.1016/j.jelechem.2013.09.017
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Carbon paste electrode (CPE) modified with metal-organic framework MIL-101 (MIL-CPE) was developed. The morphological characteristics of MIL-101 were characterized by scanning electron microscope (SEM) and N-2 physical adsorption experiments. Electrochemical sensing features were studied by electrochemical impedance spectroscopy and cyclic voltammetry. The charge transfer resistance of [Fe(CN)(6)](3-/4-) couple at the MIL-CPE was about 400 Omega which was considerably small than that of CPE. An enhanced electrocatalytic activity towards oxidation of dopamine (DA) and uric acid (UA) were observed with oxidative potentials of 218 mV for DA and 336 mV for UA at the MIL-CPE, respectively. Thus, the MIL-101 has great potential for applications in electrochemical sensors. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：65 / 69
页数：5
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