Pt nanoparticles-assisted electroless deposition of Prussian blue on the electrode: Detection of H₂O₂ with tunable sensitivity

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• 作者：Jia Zhang^a ; ^b ; Jing Li^a ; ^b ; Fan Yang^a ; Bailin Zhang^a ; Xiurong Yang^a ; ^{xryang@ciac.jl.cn}
• 关键词：Prussian blue ; Pt nanoparticles ; Electroless deposition ; H2O2 ; Electrochemical sensors
• 刊名：Journal of Electroanalytical Chemistry
• 出版年：2010
• 出版时间：5 January 2010
• 年：2010
• 卷：638
• 期：1
• 页码：173-177
• 全文大小：616 K

文摘

In this communication, electroless deposition of Prussian blue (PB) on the electrode promoted by Pt nanoparticles (Pt_nano) is proposed for detecting H₂O₂ with adjustable sensitivity. Pt_nano/carbon nanotubes hybrid was initially used to modify the working electrode, followed by immersing it into the Fe³⁺[Fe^III(CN)₆] aqueous solution for electroless deposition of PB through a simple chemical reaction, which was catalyzed by Pt_nano. The amount of PB deposit was controllable through varying the deposition time or the Pt_nano amount on carbon nanotubes. Detection of H₂O₂ was successfully realized, sensitivity being dependent upon the amount of PB in the system. This work first demonstrates the feasibility of controlling the sensitivity of PB-based amperometric sensors through nanoparticles-assisted chemical deposition of PB, offering new insight into the development of electrochemical sensors using PB as the transducer.