Photocatalytic synthesis and synergistic effect of Prussian blue-decorated Au nanoparticles/TiO2 nanotube arrays for H2O2 amperometric sensing

被引：21
作者：
Gao, Zhi-Da [1 ]
Han, Yu-Yao [1 ]
Li, Yan-Chun [1 ]
Yang, Min [2 ]
Song, Yan-Yan [1 ]
机构：
[1] Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China
[2] Harbin Inst Technol, Sch Chem Engn & Technol, Dept Catalysis Sci & Engn, Harbin 150001, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2014年 / 125卷
基金：
中国国家自然科学基金;
关键词：
TiO2; nanotube; Prussian blue; photocatalysis; synergistic effect; amperometric sensing; ELECTROCHEMICAL APPROACH; HORSERADISH-PEROXIDASE; FERRICYANIDE SOLUTION; HYDROGEN-PEROXIDE; TIO2; NANOTUBES; ELECTRODE; NANOSTRUCTURES; TITANIUM; PLATFORM; LAYERS;
D O I：
10.1016/j.electacta.2014.01.149
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Prussian blue (PB) nanocrystals are decorated on the TiO2 nanotube arrays (TiNTs) by one-step photocatalytic method. The formed PB-TiNTs composite shows high electrocatalytic activities towards the reduction of H2O2. When the TiNTs layer is covered with a layer of Au nanoparticles (AuNPs) before PB decoration, the electrocatalytic activity is significantly enhanced on the as-formed PB-AuNPs/TiNTs nanocomposite, due to the synergistic effect of AuNPs and PB. Compared with PB-TiNTs, the PBAuNPs/TiNTs based electrode shows improved electrochemical behaviors for H2O2 sensing, such as low overpotential, high sensitivity, wide linear range, and decreased detection limitation, and thus provides a simple, promising and cost-effective sensing platform for development of enzyme based biosensors. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：530 / 535
页数：6
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