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| Preparation and Electrochemical Analysis Application of Enzyme-functionalized Prussia Blue-Polydopamine-Platinum Nanocomposites |
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| DOI： |
| KeyWord:H2O2 sensor nanocomposites prussia blue polydopamine horseradish peroxidase |
| Author | Institution |
| WANG Hai-ning，QI Yu,SUN Zhao，FENG Tao-tao，HONG Cheng-lin |
石河子大学化学化工学院新疆兵团材料化工工程技术研究中心，新疆维吾尔自治区教育厅高校材料化工重点实验室 |
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| Abstract: |
| In this paper，prussian blue(PB) coated gold nanoparticles(Au NPs) were firstly prepared by in situ method.Then，polydopamine(PDA) wrapped Au-PB was synthesized based on the characteristic of one-step oxidative polymerization of dopamine.The bioinspired surface enriched amino and hydroxyl groups were further used as a support to anchor active platinum nanoparticles(Pt NPs).Horseradish peroxidase(HRP) functionalized Au-PB-PDA-Pt nanocomposites was also used for the fabrication of H2O2 biosensor.By taking advantages of the excellent biocompatibility and film forming ability of PDA，the large surface area and high biocompatibility of Pt NPs，and the synergistic employ of PB，Pt and HRP，the HRP functionalized nanocomposites modified electrode exhibited an excellent electroreduction activity to H2O2.Under the optimum conditions，the linear detection range from 2.0×10-7-1.0×10-3 mol?L-1 was observed,and a detection limit was 1.2×10-7 mol?L-1. |
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