Immobilization of Hemoglobin on Cobalt Nanoparticles-modified Indium Tin Oxide Electrode: Direct Electrochemistry and Electrocatalytic Activity

被引：2

作者：

Li Shuo-qi ^{[1
]}

Hu Jing-bo ^{[2
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266590, Peoples R China

[2] Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China

来源：

CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2013年 / 29卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Cobalt nanoparticle; Indium tin oxide electrode; Direct electron transfer; Hemoglobin; Electrocatalysis; Hydrogen peroxide; CARBON-PASTE ELECTRODE; MAGNETIC NANOPARTICLES; FE3O4; NANOPARTICLES; DIRECT VOLTAMMETRY; CYTOCHROME-C; NITRIC-OXIDE; GEL FILM; CHITOSAN; MYOGLOBIN; PROTEINS;

D O I：

10.1007/s40242-013-2273-x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A cobalt nanoparticles-attached indium tin oxide(CoNPs/ITO) electrode was applied to the immobilization of hemoglobin(Hb) and an Hb modified CoNPs/ITO electrode(Hb/CoNPs/ITO) was prepared. The direct electron transfer of Hb was shown by the well-behaved voltammetric responses for Hb/CoNPs/ITO electrode and the effects of scan rate and pH value were observed. Based on the catalytic activity of Hb immobilized on the CoNPs/ITO electrode toward the reduction of H2O2, a mediator-free H2O2 sensor was developed. A linear relationship existed between the catalytic current and the H2O2 concentration in a range of 1.0-100.0 mu mol/L with a detection limit (S/N=3) of 0.2 mu mol/L.

引用

页码：563 / 567

页数：5

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