| 碳纳米管负载纳米铂修饰电极及电催化氧化H2O2的研究 |
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| 引用本文： | 朱玉奴,彭图治,李建平.碳纳米管负载纳米铂修饰电极及电催化氧化H2O2的研究[J].高等学校化学学报,2004,25(9):1637-1641. |
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| 作者姓名： | 朱玉奴 彭图治 李建平 |
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| 作者单位： | 1. 浙江大学西溪校区化学系,杭州,310028
2. 浙江大学西溪校区化学系,杭州,310028;桂林工学院应用化学系,桂林,541004 |
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| 基金项目： | 国家自然科学基金(批准号:29975024,20275034)和浙江省重点科技项目资助. |
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| 摘 要： | 采用化学气相沉积法在碳纳米管(CNT)上负载Pt纳米颗粒,并制备了CNT-Pt修饰玻碳电极(CNT-Pt/GCE).研究了该修饰电极在磷酸缓冲液中对H2O2的电催化氧化作用以及实验条件的影响.计算了H2O2在CNT-Pt/GCE上的电极反应速率常数.结果表明,CNT-Pt/GCE对H2O2的电化学氧化具有良好的催化作用,电极反应速率常数比铂电极高约2.65倍.初步探讨了电催化氧化机理,为酶电化学传感器的研制提供了一条新的途径.
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| 关 键 词： | 纳米铂颗粒 碳纳米管 电催化氧化 过氧化氢 |
| 文章编号： | 0251-0790(2004)09-1637-05 |
| 收稿时间： | 2003-06-10 |
Electrocatalytic Oxidation of Hydrogen Peroxide at a Glassy Carbon Electrode Modified with Platinum-decorated Carbon Nanotubes |
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| ZHU Yu-Nu,PENG Tu-Zhi,LI Jian-Ping.Electrocatalytic Oxidation of Hydrogen Peroxide at a Glassy Carbon Electrode Modified with Platinum-decorated Carbon Nanotubes[J].Chemical Research In Chinese Universities,2004,25(9):1637-1641. |
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| Authors: | ZHU Yu-Nu PENG Tu-Zhi LI Jian-Ping |
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| Institution: | ZHU Yu-Nu,PENG Tu-Zhi*,LI Jian-Ping |
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| Abstract: | A chemical vapour deposit(CVD) method was used for decoration nano-platinum particles onto carbon nanotube surface. A glassy carbon electrode modified with platinum-decorated carbon nanotube(CNT-Pt/GCE) was prepared. The electrochemical oxidation of hydrogen peroxide(H 2O 2) was studied on this modified electrode. The rate constant k s of the electro-oxidation reaction was obtained from kinetic {equations}. The k s at CNT-Pt /GCE was 2.65 times of that at Pt electrode, which shows good catalytic {activities} for electro-oxidation of H 2O 2 in phosphate buffer medium. The mechanism of the electro-oxidation reactions was proposed. This modified electrode can be used to fabricate biosensors based on oxidase. |
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| Keywords: | Nano-platinum particles Carbon nanotubes Electrocatalytic-oxidation Hydrogen peroxide |
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