基于多壁碳纳米管修饰碳印刷电极的高灵敏液相硫化氢传感器
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引用本文:沈费宸,周呈,李崭虹,赵雪伶,王静荣,朱志刚.基于多壁碳纳米管修饰碳印刷电极的高灵敏液相硫化氢传感器[J].上海第二工业大学(英文版),2021,(1):8-14
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Author NameAffiliation
SHEN Fei-chen 1. School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
 
ZHOU Cheng 2. School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China 
LI Zhan-hong 1. School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
2. School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China 
ZHAO Xue-ling 1. School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
 
WANG Jingrong 1. School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
 
ZHU Zhi-gang 1. School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
2. School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China 
基金项目:上海第二工业大学研究生项目基金 (EGD19YJ0027) 资助
中文摘要:以 PET 为基底, 导电银浆和碳浆为原料, 通过丝网印刷技术制备一次性可抛弃式丝网印刷电极 (screen-printed electrode, SPE), 并且将多壁碳纳米管与萘酚水溶液复合物修饰于工作电极表面。利用扫描电子显微镜对 SPE 进行表征, 以循环伏安法及计时电流法对硫化钠溶液进行测试。通过改变测试溶液 pH 和电位优化测试条件, 结果表明, 在 pH 为 9 的磷酸缓冲溶液中, 测试电位为 0.1 V 时, 碳纳米管修饰 SPE 对液相硫化氢有最佳的电化学响 应。该传感器具有宽线性范围 (0.5 μmol/L~7.24 mmol/L), 良好的抗干扰性、检测选择性和低的检测限。
中文关键词:电化学传感器  丝网印刷电极  硫化钠  碳纳米管材料
 
Highly Sensitive Liquid Phase Hydrogen Sulfide Sensor Based onMulti-Walled Carbon Nanotubes Modified CarbonScreen-Printed Electrode
Abstract:Disposable screen-printed electrode (SPE) was prepared by screen printing technology with PET as substrate, conductive silver paste and carbon paste as raw materials, and the composite of multi-walled carbon nanotube and Nafion aqueous solution was modified on the working electrode surface. The SPE was characterized by scanning electron microscope, and sodium sulfide solution was tested by cyclic voltammetry and chronoamperometry. By varying the pH and potential of the test solutions to optimize the test conditions, and the results show that in the phosphate buffer solution with pH 9 and the test potential of 0.1 V, the carbon nanotube modified SPE has the best electrochemical response to hydrogen sulfide in liquid phase. The sensor has a wide linear range (0.5 μmol/L~7.24 mmol/L), good anti-interference, good detection selectivity and low detection limit.
keywords:electrochemical sensor  screen-printed electrode  sodium sulfide  carbon nanotube material
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