文献类型：期刊文献

英文题名：Nonenzymatic electrochemical glucose sensor based on novel Pt-Pd nanoflakes

作者：Niu, Xiangheng[1,2];Lan, Minbo[1,2,3];Chen, Chen[1,2];Zhao, Hongli[1,2,4]

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, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[4]E China Univ Sci & Technol, Inst Appl Chem, Shanghai 200237, Peoples R China

年份：2012

卷号：99

起止页码：1062

外文期刊名：TALANTA

收录：;EI(收录号：20123815446475);WOS:【SCI-EXPANDED(收录号:WOS:000309785300151)】；

基金：Research grants from Science and Technology Commission of Shanghai Municipality (nos. 10dz2220500 and 10391901600) and Ministry of Education of the People's Republic of China (no. WK1014051) are gratefully acknowledged.

语种：英文

外文关键词：Pt-Pd nanoflakes; Screen-printed gold film electrode; Glucose; Nonenzymatic electrochemical sensor

摘要：The sluggish kinetic-controlled glucose oxidation reaction on Pt electrodes is well recognized as the most critical issue that blocks the development and commercialization of enzyme-free glucose sensors, and increasing attention is being focused on improving the analytical performances of these nonenzymatic sensors through exploring new Pt-based catalysts. In the present research, we synthesized novel Pt-Pd nanoflakes (Pt-Pd NFs) with three-dimensional architectures on a homemade screen-printed gold film electrode (SPGFE) substrate using a facile electrochemical deposition without any template, and further investigated the properties of the as-fabricated Pt-Pd NFs/SPGFE for enzymeless glucose detection. The results reveal that the proposed Pt-Pd nanostructure can provide preeminent electrocatalytic activity and excellent selectivity for enzyme-free glucose sensing under simulative physiological conditions, mainly attributing to its attractive structure, large active surface and appropriate applied potential. The resulting Pt-Pd NFs/SPGFE offers linear current responses for glucose with the concentration upper limit to 16 mM. The obtained sensitivity is calculated to be as high as 48.0 mu A cm(-2) mM(-1) in the presence of 0.15 M chlorides ions, and practical applications for blood sample analysis are also demonstrated. The proposed Pt-Pd structure is considered as a great potential building block for the fabrication of nonenzymatic electrochemical glucose sensors. (C) 2012 Elsevier B.V. All rights reserved.