Journal
ELECTROCHIMICA ACTA
Volume 125, Issue -, Pages 530-535Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.01.149
Keywords
TiO2 nanotube; Prussian blue; photocatalysis; synergistic effect; amperometric sensing
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Funding
- National Natural Science Foundation of China [21275026, 201322504, 11174046, 21203043]
- Fundamental Research Funds for the Central Universities [N120505002, N120505006, N110805001]
- Program for Liaoning Excellent Talents in University [LJQ2013028]
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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.
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