Electrochemical sensing of trichloroacetic acid based on silver nanoparticles doped chitosan hydrogel film prepared with controllable electrodeposition

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• 作者：Benzhi Liu ; Yuehua Deng ; Xiaobin Hu ; Zhanqi Gao ; Cheng Sun
• 关键词：Trichloroacetic acid ; Silver nanoparticles ; Chitosan ; Electrochemical sensing
• 刊名：Electrochimica Acta
• 出版年：2012
• 出版时间：1 August, 2012
• 年：2012
• 卷：76
• 期：Complete
• 页码：410-415
• 全文大小：829 K

文摘

A novel architecture was designed by controllable electrodeposition of silver nanoparticles doped chitosan hydrogel film for electrochemical sensing of trichloroacetic acid. The as prepared hydrogel film presents excellent ability to facilitate the diffusion and electron transfer process of the negatively charged redox couple [Fe(CN)₆]^3?/[Fe(CN)₆]^4? benefitting from positively charged chitosan in acidic solutions. Based on this, by combining the excellent electrocatalytic properties toward trichloroacetic acid, a sensitive amperometric sensor for trichloroacetic acid is constructed with a low detection limit.