基于复合膜修饰ITO电极的乙醇传感器研究  

Study on alcohol sensor based on composite film modified ITO electrode

作　　者：朱洋[1] 邓世雄[1,2] 谢国明[2] 甄生航[2] 王艳[2] 

机构地区：[1]重庆医科大学基础医学院法医教研室,重庆400016 [2]重庆医科大学检验系临床检验诊断学教育部重点实验室,重庆400016

出　　处：《传感器与微系统》2010年第12期19-21,共3页Transducer and Microsystem Technologies

基　　金：重庆市科技攻关计划资助项目(CSTC2009AC5145)

摘　　要：利用羧基化的多壁碳纳米管（MWCNT）修饰氧化铟锡（ITO）电极，表面吸附一层普鲁士蓝（PB）作为电子介体制作一种新型的乙醇传感器。通过循环伏安法、计时电流法对传感器的性能进行表征和研究。结果表明：所制备传感器对乙醇具有明显的电化学活性，线性范围为0．5-10mmol／L，在S／N=3的情况下，检出限为0．07mmol／L（R=0．9968）。该传感器制备简单、经济实用，具有良好的准确性、灵敏度及抗干扰能力。A novel alcohol sensor is made by using indium tin oxides（ITO） electrode,whose surface is modified by carboxylated multi-walled carbon nanotubes（MWCNTs） absorbed a thin Prussian blue film as electron mediator. The sensor＇s function had been investigated by cyclic voltammctry and ehronoamperometry. The experimental results demonstrate that sensor exhibited a linear range of 0.5 - 10 mmol/L with a correlation coefficient of 0. 996 8. In the case of S/N =3, the detection limit is 0.07 mmol/L. The alcohol sensor not only have the advantages of easy to prepare, economic and practical, but also have good accuracy, sensitivity and anti-interference character.

关 键 词：乙醇 多壁碳纳米管 普鲁士蓝 氧化铟锡 传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]