Mesoporous silica (MCM-41)-Fe2O3 as a novel magnetic nanosensor for determination of trace amounts of amino acids

被引：58
作者：
Hasanzadeh, Mohammad [1 ]
Shadjou, Nasrin [2 ]
Omidinia, Eskandar [1 ]
机构：
[1] Tabriz Univ Med Sci, Drug Appl Res Ctr, Tabriz 51664, Iran
[2] Pasteur Inst Iran, Dept Biochem, Enzyme Technol Lab, Genet & Metab Grp, Tehran, Iran
来源：
COLLOIDS AND SURFACES B-BIOINTERFACES | 2013年 / 108卷
关键词：
MCM-41-Fe2O3; Amino acid; Mesoporous; Flow injection; Hydrodynamic amperometry; GLASSY-CARBON ELECTRODE; SELECTIVE DETERMINATION; OXIDATION REACTIONS; L-TYROSINE; TRYPTOPHAN; ELECTROOXIDATION; BIOSENSOR;
D O I：
10.1016/j.colsurfb.2013.02.015
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
Magnetic (Fe2O3) mobile crystalline material-41 (MCM-41) was prepared and characterized using transmission electron microscopy (TEM) and nitrogen adsorption-desorption techniques. Due to the large surface area (1213 m(2) g(-1)) and remarkable electrocatalytic properties of MCM-41-Fe2O3, the MCM-41-Fe2O3 modified glassy carbon electrode (MCM-41-Fe2O3/GCE) exhibits potent electrocatalytic activity toward the electro-oxidation of amino acids. MCM-41-Fe2O3/GCE brings new capabilities for electrochemical sensing by combining the advantages of Fe2O3 magnetic nanoparticles and MCM-41 with very large surface area. Cyclic voltammetry, hydrodynamic amperometry and flow injection analysis used to determination of amino acids at higher concentration range. Fast response time, excellent catalytic activity, and ease of preparation are the advantages of the proposed amino acid sensor. (C) 2013 Elsevier B.V. All rights reserved.
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收藏
页码：52 / 59
页数：8
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