| 纳米氧化铝模板促进细胞色素c的电催化 |
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| 引用本文： | 秦玉华,王胜天,许宏鼎.纳米氧化铝模板促进细胞色素c的电催化[J].吉林大学学报(理学版),2004,42(1):113-115. |
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| 作者姓名： | 秦玉华 王胜天 许宏鼎 |
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| 作者单位： | 吉林大学化学学院， 长春 130023 |
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| 基金项目： | 中央与地方共建专项基金. |
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| 摘 要： | 在草酸溶液中， 通过阳极氧化铝箔制备纳米氧化铝(AAO)模板, 将细胞色素c（Cyt c）固定在纳米AAO模板和4,4-二硫二吡啶(PySSPy)修饰金电极表面， 制得Cytc/Au/AAO/PySSPy薄膜电极. 在pH 6.8的缓冲溶液中, 该电极在0.059 V (vs. Ag/AgCl) 处有一
对准可逆氧化还原峰, 为Cyt c血红素辅基Fe(Ⅲ)/Fe（Ⅱ）电对的特征峰. 在AAO/PySSPy薄膜的微环境中, Cyt c与金电极之间的电子传递加快. 紫外光谱结果表明， Cyt c在AAO薄膜中依然保持其原始构象. 该Cyt c/Au/AAO/PySSPy薄膜电极还可用于过氧化氢的催化还
原.
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| 关 键 词： | 纳米氧化铝 细胞色素c 直接电化学 电催化 |
| 文章编号： | 1671-5489(2004)01-0113-03 |
| 收稿时间： | 2003-09-15 |
| 修稿时间： | 2003年9月15日 |
Electrocatalysis of cytochrome c promoted by the nano-alumina templates |
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| QIN Yu-hua,WANG Sheng-tian,XU Hong-ding.Electrocatalysis of cytochrome c promoted by the nano-alumina templates[J].Journal of Jilin University: Sci Ed,2004,42(1):113-115. |
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| Authors: | QIN Yu-hua WANG Sheng-tian XU Hong-ding |
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| Institution: | College of Chemistry, Jilin University, Changchun 130023, China |
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| Abstract: | Cyt c/Au/AAO/PySSPy electrodes were made by immobilizing Cyt c on PySSPy modified gold electrodes covered with AAO templates. The cyclic voltammgram of Cyt c/Au/AAO/PySSPy films shows a pair of well-defined and nearly reversible peaks at about 0.059 V(vs. Ag/AgCl) in pH 6.8 PBS buffers, being the chara
cteristic peaks of the Cyt c heme Fe(Ⅲ)/Fe（Ⅱ）redox couples. In the microenvironm
ent of the AAO/PySSPy film, the electron transfer between Cyt c and the electrode was greatly enhanced. The soret absorption band positions suggest that Cyt c retained its native conformation in AAO templates. The hydrogen peroxide was cat alytically reduced at Cyt c/Au/AAO/PySSPy electrodes. |
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| Keywords: | nano-alumina cytochrome c direct electrochemistry electrochemical catalysis |
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