期刊
BIOSENSORS & BIOELECTRONICS
卷 23, 期 10, 页码 1519-1526出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2008.01.009
关键词
Prussian blue; nano-Au; PAMAM dendrimer; hydrogen peroxide; electrochemical deposition
类别
资金
- National Research Foundation of Korea [2005-01333, R01-2005-000-10503-0, 과06A1506] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Gold electrode was modified with 3-mercaptopropionic acid (MPA) and further reacted with poly(amidoamine) (PAMAM) dendrimer (generation 4.0) then attached the nano-Au to obtain films on which Prussian blue (PB) was electrochemically deposited to afford much wider pH adaptive range, much better electrochemical stability and excellent electrochemical response. The microstructure and electrochemical behavior of Au/MPA/PAMAM/nano-Au/PB electrode were investigated by scanning electron microscopy (SEM) and cyclic voltammetry. The electrochemical response of the Au/MPA/PAMAM/nano-Au/PB-modified electrode for the electrocatalytic reduction of hydrogen peroxide was investigated, and it was found that the sensitivity as well as the corresponding detection limits were improved as compared to the voltammetric response of a Au/PB-modified electrode and Au/MPAIPAMAM/PB electrode. Based on this, a new electrochemical sensor for determination of hydrogen peroxide has been developed. (C) 2008 Elsevier B.V. All fights reserved.
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