文献类型：期刊文献

英文题名：Platinum nanoparticle-decorated carbon nanotube clusters on screen-printed gold nanofilm electrode for enhanced electrocatalytic reduction of hydrogen peroxide

作者：Niu, Xiangheng[1,2];Zhao, Hongli[1,2];Chen, Chen[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：65

起止页码：97

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20120914810368);WOS:【SCI-EXPANDED(收录号:WOS:000301806600014)】；

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

语种：英文

外文关键词：Platinum nanoparticle; Multi-walled carbon nanotube cluster; Screen-printed gold nanofilm electrode; Electrocatalytic reduction; Hydrogen peroxide

摘要：In the present study the electrocatalytic behavior of platinum nanoparticle-decorated multi-walled carbon nanotube clusters vertically aligned on a screen-printed gold nanofilm electrode substrate (SPGFE/MWCNTC/PtNP) toward hydrogen peroxide was intensively investigated. Oriented multi-walled carbon nanotube clusters (MWCNTC) were firstly well-organized onto the screen-printed gold film electrode (SPGFE) surface by covalent immobilization, and then platinum nanoparticles (PtNPs) dispersed on the MWCNTC structure were in situ synthesized by electrochemically reducing chloroplatinic acid. It was demonstrated that the MWCNTC/PtNP hybrid structure on the SPGFE substrate could significantly enhance the electrochemical reduction of hydrogen peroxide in neutral solutions. Compared with platinum nanoparticles loading on disordered multi-walled carbon nanotubes (SPGFE/MWCNT/PtNP), the proposed SPGFE/MWCNTC/PtNP exhibited more sensitive responses for hydrogen peroxide reduction. The fabricated electrode provided linear current responses for hydrogen peroxide in the concentration range from 5 to 2000 mu M with a detection limit of 1.23 mu M. The non-enzymatic sensor also offered good reproducibility and high selectivity for hydrogen peroxide detection. The carbon nanotube cluster/platinum nanoparticle hybrid system holds great promise as a scaffold to fabricate enzyme biosensors. (C) 2012 Elsevier Ltd. All rights reserved.