等离子体改性对纳米碳管电化学检测性能的影响  

Effect of plasma modification on electrochemical detection property of carbon nanotubes

作　　者：李艳琼[1] 杨茂文 王升高[1] 王涛[1] 程莉莉[1] 汪建华[1] 

机构地区：[1]武汉工程大学等离子体化学与新材料重点实验室,湖北武汉430073 [2]武汉健民药业集团股份有限公司,湖北武汉430070

出　　处：《应用化工》2007年第6期527-529,536,共4页Applied Chemical Industry

基　　金：国家自然基金项目(50572075);教育部科学技术研究重点项目(206098);武汉市青年科技晨光计划资助项目(20045006071-39)

摘　　要：利用微波等离子体化学气相沉积法制备了与电极基底结合良好的纳米碳管电极,用空气等离子体将该纳米碳管电极功能化,并以功能化的电极为工作电极,利用循环伏安法对毒性很强的酚的混合物进行检测。根据氧化还原峰电位的不同可以区分出邻苯二酚和对苯二酚,与石墨电极相比,功能化的纳米碳管电极具有更好的电催化性能。利用该电极测定酚的混合物是一种准确、快速、有效的测定方法。合成纳米碳管电极的最佳工艺条件为:功率为400 W,压强为3.0 kPa,甲烷流速为2 mL/m in,氢气流速为50 mL/m in;功能化纳米碳管的最佳工艺条件为:功率为150 W,压强为1.0 kPa,空气的流速为50 mL/m in。In this paper, carbon nanotubes electrodes are directly synthesized on the surface of electrodes substrate through microwave plasma chemical vapor deposition, then they are disposed by air plasma. As working electrodes, they can be used to distinguish phenolic mixture with toxicity well by cyclic voltammetry. Compared to graphite electrodeS, the carbon nanotubes electrodes disposed have better eletrocatalytical property. It is a exact, quick and effective way to detect phenolic mixture with disposed carbon nanotubes electrodes. The condition of synthesizing carbon nanotubes are：power is 400 W, pressure is 3.0 kPa, flowing velocity of methane is 2 mL/min and flowing velocity of hydrogen is 50 mL/min. The best parameter of disposing carbon nanotubes are as follows：the power is 150 W,the pressure is 1.0 kPa,the velocityof flow of air is 50 mL/min.

关 键 词：纳米碳管电极 电化学检测 微波等离子体化学气相沉积法 

分 类 号：O646[理学—物理化学]