The self-assembly, characterization and application of hemoglobin immobilized on Fe3O4@Pt core-shell nanoparticles

被引：0
|
作者：
Hong Fan
Zhong-Qin Pan
Hai-Ying Gu
机构：
[1] Nantong University,Institute of Analytical Chemistry for Life Science, School of Public Health
来源：
Microchimica Acta | 2010年 / 168卷
关键词：
Fe; O; @Pt core-shell nanoparticles; Hemoglobin; Hydrogen peroxide; Direct electron transfer;
D O I：
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中图分类号：
学科分类号：
摘要：
Direct electron transfer is demonstrated to occur between an electrode and hemoglobin that was immobilized on a film of Fe3O4@Pt-chitosan (Fe3O4@Pt-CS). Magnetic nanoparticles composed of Fe3O4 were prepared by a chemical coprecipitation method, and platinum nanoparticles were deposited on the Fe3O4 surface to form novel core-shell nanocomposites. In phosphate buffer solution of pH 7.0, the hemoglobin-Fe3O4@Pt-CS assembly on a modified glassy carbon electrode exhibited a couple of well-defined and quasi-reversible redox peaks. The formal potential E0′ was about −0.35 V. The electrode displayed excellent electrocatalytic activity towards oxygen and hydrogen peroxide reduction without the need for an electron mediator.
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页码：239 / 244
页数：5
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