A Novel Sensor Based on Polyoxometalates Modified Electrode

作者：Li, Pengcheng; Ye, Shuhong; Chen, Shouhui; Xiong, Jianping; Wang, Li; Song, Yonghai^*

来源：Asian Journal of Chemistry, 2013, 25(3): 1420-1424.

• Electrochemistry
• Phthalocyanatocobalt
• Polyoxometalates
• Sensor

A novel [SiNi(H2O)W11O39](6-)/poly(ferrocenylsilane) (PFS)/phthalocyanatocobalt(II) (Co(II)TAPc) modified gold (Au) electrode was fabricated by stepwise self-assembly of Co(II)TAPc, PFS and Keggin-type [SiNi(H2O)W11O39](6-) on gold electrode. The properties and electrochemical behaviours of the modified electrode had been investigated by atomic force microscopy and electrochemical methods. Atomic force microscopy results showed that the Au electrode surface had been successfully covered by the three materials which formed three-dimensional (3D) porous film. The electrochemical results showed that the 3D porous film modified gold electrode combined the properties of [SiNi(H2O)W11O39](6-), PFS and Co(II)TAPc and exhibited good electrocatalytic ability to a series of chemicals, including O-2, H2O2, Fe3+ sO(3)(2-), uric acid and ascorbic acid. The resulted [SiNi(H2O)W11O39](6-)/PFS/Co(II)TAPc/Au electrode could be used in a large range of pH (0-8) and exhibited extremely fast amperometric response, low detection limit, high selectivity and wide linear range to these analyses.

• 出版日期2013-2
• 单位江西师范大学