A novel tetragonal pyramid-shaped porous ZnO nanostructure and its application in the biosensing of horseradish peroxidase

被引：53

作者：

Dai, Zhihui ^{[1
]}

Liu, Ke ^{[1
]}

Tang, Yawen ^{[1
]}

Yang, Xiaodi ^{[1
]}

Bao, Jianchun ^{[1
]}

Shen, Jian ^{[1
]}

机构：

[1] Nanjing Normal Univ, Dept Chem, Jiangsu Key Lab Biofunct Mat, Nanjing 210097, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2008年 / 18卷 / 16期

关键词：

D O I：

10.1039/b717794a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

A novel nano-sized tetragonal pyramid-shaped porous ZnO (TPSP-ZnO) structure was, for the first time, prepared with a high morphological yield by a simple polyglycol-assisted wet chemical method. It was found that the polyglycol had a significant influence on the nucleation and pore formation in the ZnO nanostructure. The OH- concentration and the zinc counter-ion affected the morphology of the produced ZnO nanostructure. TPSP-ZnO can be used as an efficient matrix for immobilizing horseradish peroxidase (HRP) and applied to sense hydrogen peroxide (H2O2). Interestingly, it had better biosensing properties than solid spherical ZnO nanoparticles, which might result from the larger specific surface area of TPSP-ZnO, causing a higher HRP loading, and the tetragonal pyramid-shaped porous nanostructure having high fraction of surface atoms located on the corners and edges, resulting in an improved catalytic activity.

引用

页码：1919 / 1926

页数：8

共 74 条

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