| HIGHLY SENSITIVE CATALASE ELECTRODE BASED ON POLYPYRROLE FILMS WITH MICROCONTAINERS |
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| 引用本文： | Yu-ying Gao Gao-quan Shi. HIGHLY SENSITIVE CATALASE ELECTRODE BASED ON POLYPYRROLE FILMS WITH MICROCONTAINERS[J]. 高分子科学, 2006, 0(6): 579-584 |
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| 作者姓名： | Yu-ying Gao Gao-quan Shi |
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| 作者单位： | Department of Chemistry, Tsinghua University, Beijing 100084, China |
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| 基金项目： | 国家自然科学基金 , 国家重点基础研究发展计划(973计划) |
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| 摘 要： | Highly sensitive catalase electrodes for sensing hydrogen peroxide have been fabricated based on polypyrrole films with microcontainers. The microcontainers have a cup-like morphology and are arranged in a density of 4000 units cm^-2. Catalase was immobilized into the polypyrrole films with microcontainers （Ppy-mc）, which were coated on a Pt substrate electrode. The catalase/Ppy-mc/Pt electrode showed linear response to hydrogen peroxide in the range of 0-18 mmol/L at a potential of-0.3 V （versus SCE）. Its sensitivity was measured to be approximately 3.64 μA （mmol/L） ^-1 cm^- 2, which is about two times that of the electrode fabricated from a flat Ppy film （catalase/Ppy-flat/Pt electrode）. The electrode is highly selective for hydrogen peroxide and its sensitivity is interfered by potential interferents such as ascorbic acid, urea and fructose. Furthermore, such catalase electrodes showed long-term storage stability of 15 days under dry conditions at 4℃.
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| 关 键 词： | 显微结构聚吡咯 过氧化氢酶 电聚合 传感器 过氧化氢 |
| 收稿时间： | 2005-12-23 |
| 修稿时间： | 2006-03-10 |
HIGHLY SENSITIVE CATALASE ELECTRODE BASED ON POLYPYRROLE FILMS WITH MICROCONTAINERS |
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| Yu-ying Gao,Gao-quan Shi. HIGHLY SENSITIVE CATALASE ELECTRODE BASED ON POLYPYRROLE FILMS WITH MICROCONTAINERS[J]. Chinese Journal of Polymer Science, 2006, 0(6): 579-584 |
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| Authors: | Yu-ying Gao Gao-quan Shi |
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| Affiliation: | Department of Chemistry, Tsinghua University, Beijing 100084, China |
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| Abstract: | Highly sensitive catalase electrodes for sensing hydrogen peroxide have been fabricated based on polypyrrole films with microcontainers. The microcontainers have a cup-like morphology and are arranged in a density of 4000 units cm-2.Catalase was immobilized into the polypyrrole films with microcontainers (Ppy-mc), which were coated on a Pt substrate electrode. The catalase/Ppy-mc/Pt electrode showed linear response to hydrogen peroxide in the range of 0-18 mmol/L at a potential of -0.3 V (versus SCE). Its sensitivity was measured to be approximately 3.64 μA (mmol/L)-1 cm-2, which is about two times that of the electrode fabricated from a flat Ppy film (catalase/Ppy-flat/Pt electrode). The electrode is highly selective for hydrogen peroxide and its sensitivity is interfered by potential interferents such as ascorbic acid, urea and fructose. Furthermore, such catalase electrodes showed long-term storage stability of 15 days under dry conditions at 4℃. |
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| Keywords: | Microstructured polypyrrole Catalase Electropolymerization Sensors Hydrogen peroxide |
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