文献类型：期刊文献

英文题名：Novel snowflake-like Pt-Pd bimetallic clusters on screen-printed gold nanofilm electrode for H₂O₂ and glucose sensing

作者：Niu, Xiangheng[1,2];Chen, Chen[1,2];Zhao, Hongli[1,2];Chai, Yan[1,2];Lan, Minbo[1,2,3]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Res Ctr Anal & Test, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2012

卷号：36

期号：1

起止页码：262

外文期刊名：BIOSENSORS & BIOELECTRONICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000305667700042)】；

基金：This work was financially supported by Science and Technology Commission of Shanghai Municipality (STCSM, contract no. 10dz2220500 and 10391901600) and Ministry of Education of the People's Republic of China (contract no. WK1014051).

语种：英文

外文关键词：Snowflake-like Pt-Pd nanoclusters; H2O2; Glucose oxidase; Glucose

摘要：Novel snowflake-like Pt-Pd bimetallic nanoclusters (Pt-PdBNC) were synthesized on a screen-printed gold nanofilm electrode (SPGFE) substrate by electrochemically reducing precursors with a new constant potential/multi-potential step deposition strategy. The electrocatalytic behavior of the modified electrode (SPGFE/Pt-PdBNC) towards H2O2 was investigated. The results indicate that the as-prepared Pt-PdBNC significantly enhances the electrochemical reduction of H2O2 in neutral media, exhibiting preferable electrocatalytic performance compared to Pt and Pd monometallic nanoclusters. Under optimum conditions, SPGFE/Pt-PdBNC offers linear responses for H2O2 in the concentration range from 0.005 to 6 mM with an ultrahigh sensitivity of 804 mA M-1 cm(-2) and excellent selectivity. Furthermore, glucose oxidase was immobilized on the Pt-PdBNC structure, and the fabricated biosensor presents favorable properties for glucose sensing. (C) 2012 Elsevier B.V. All rights reserved.