| 碳纳米管/TiO2电极光电催化测定耐兰方法探讨 |
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| 引用本文： | 李达钱,陈金媛.碳纳米管/TiO2电极光电催化测定耐兰方法探讨[J].浙江工业大学学报,2006,34(4):369-372. |
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| 作者姓名： | 李达钱 陈金媛 |
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| 作者单位： | 1. 浙江天台县环境检测站,浙江,天台,317200
2. 浙江工业大学,生物与环境工程学院,浙江,杭州,310032 |
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| 摘 要： | 自合成二氧化钛-碳纳米管（TiO2一CNT）复合催化剂，用Nafion溶液把CNT—TiO2固定到玻碳电极上制成CNT—TiO2／GC修饰电极，以耐兰染料为测定对象，进行光电化学响应研究．结果表明，在pH7．2的磷酸盐缓冲液中，示差脉冲伏安法（DPV）测定，分散兰1于-0．4V（vs Ag／AgCl）处产生良好的阴极还原峰，电极对耐兰染料的吸附过程符合Langmuir吸附，其光电响应值高于碳糊／TiO2电极．高光电响应意味着复合材料制成电极后，对有机染料废水的检测限更低，灵敏度更高。
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| 关 键 词： | 碳纳米管 修饰电极 耐兰 |
| 文章编号： | 1006-4303（2006）04-0369-04 |
| 收稿时间： | 2005-09-19 |
| 修稿时间： | 2005-09-19 |
The study of photoelectrocatalytic measurement method of Nile blue(NB) on carbon nano-tube/titanium dioxide/glassy carbon electrode |
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| LI Da-qian,CHEN Jin-yuan.The study of photoelectrocatalytic measurement method of Nile blue(NB) on carbon nano-tube/titanium dioxide/glassy carbon electrode[J].Journal of Zhejiang University of Technology,2006,34(4):369-372. |
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| Authors: | LI Da-qian CHEN Jin-yuan |
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| Abstract: | The carbon nano-tube/ titanium dioxide/glassy carbon(CNT/TiO_2/GC) electrode was prepared using Nafion solution to immobilize CNTTiO_2 on glassy carbon electrode.The analysis method for the photo-electrochemical catalysis of nile blue was investigated.The experimental results showed that the sensor displayed an excellent electrocatalytical response to the Nile blue in a phosphate buffer medium(pH 7.2),which was measured by using Differential Pulse Voltammetry.A sensitive reductive potential peak of Nile blue was observed at-0.4V(vs Ag/AgCl) on the CNT/TiO_2/GC electrode.A Langmuir type of adsorption of Nile blue on the electrode was found.The photo-electrochemical response of the TiO_2-CNT/GC electrode was stronger than that of the TiO_2/carbon paste electrode.That meant the TiO_2-CNT/GC electrode had higher sensitivity to and lower detection limit of dyes in wastewater. |
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| Keywords: | CNT-TiO2 |
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