Electrodeposition of Three‐Dimensional Porous Platinum Film on Removable Polyaniline Template for High‐Performance Electroanalysis |
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| Authors: | Lihua Wang Chao Chen Yingchun Fu Qingji Xie Zhaohong Su Cong Qin Fangyun Xie Ming Ma Shouzhuo Yao |
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| Institution: | 1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P.?R. China tel: +?867?31?88?86?55?15;2. fax: +?867?31?88?86?55?15 |
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| Abstract: | Three‐dimensional porous platinum (Ptpor) films are prepared based on Pt electrodeposition on polyaniline (PANI) modified electrodes followed by selective dissolution of PANI with HNO3. Electrochemical quartz crystal microbalance data suggest that the PANI‐H2PtCl6 interaction involves redox and coordination reactions, depending on the working potential. The Ptpor shows better electrocatalytic performance than the Pt/PANI and conventionally electrodeposited Pt. The Ptpor modified glassy carbon electrode (GCE) can electrocatalyze the oxidation of H2O2 with a sensitivity of 414 µA cm?2 mM?1 and a detection limit of 9 nM, and the chitosan‐glucose oxidase/Ptpor/GCE can sense glucose with a sensitivity of 93.4 µA cm?2 mM?1. |
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| Keywords: | Removable polyaniline template Three‐dimensional porous platinum Electroanalysis of H2O2 Biosensing Glucose Quartz crystal microbalance Platinum |
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