无机材料学报2018，Vol.33Issue(1)：53-59,7.DOI:10.15541/jim20170191
碳纳米管/聚苯胺化学修饰电极的制备及其对抗坏血酸的检测
Carbon Nanotubes/Polyaniline Chemically Modified Electrode: Preparation and Ascorbic Acid Detection
摘要
Abstract
Nickel catalyst was deposited on a graphite electrode (GE) surface by constant voltage deposition me-thod. With the nickel catalyst, carbon nanotubes (CNTs) were grown in situ on the GE surface to prepare CNTs chemically modified electrode (GSCNTs-CME) by catalytic chemical vapor deposition. After that, polyaniline (PANI) was polymerizedin situ on the GSCNTs-CME to obtain GSCNTs/PANI-CME by electrochemical polym-erization. Morphology and structure of the obtained electrodes were characterized by scanning electron microscope. Detection performances of the GSCNTs/PANI-CME on ascorbic acid (AA) were evaluated on an electrochemical workstation. Results show that the CNTs grow uniformly on the GE surface and the original tubular structure is re-mained well. PANI is coated uniformly on the surface of CNTs in the obtained composite with a typical three-dimensional network structure. The GSCNTs/PANI-CMEs show excellent electrochemical response to AA, amongst which the GSCNTs/PANI-CME with small-diameter CNTs shows stronger electrochemical response (wid-er linear detection range and lower detection limit) to AA. And its linear detection range and detection limit are 1.0×10-6～4.5×10-4 mol/L and 1.0×10-7mol/L (S/N = 3), respectively. Therefore, the GSCNTs/PANI-CME shows excellent stability, repeatability and reliability.关键词
抗坏血酸/碳纳米管/聚苯胺/化学修饰电极/电化学检测/碳纳米管管径Key words
ascorbic acid/carbon nanotubes/polyaniline/chemically modified electrode/electrochemical detec-tion/carbon nanotube diameter分类
化学化工引用本文复制引用
邓敏,江奇,方渊,李欢,邱家欣,卢晓英..碳纳米管/聚苯胺化学修饰电极的制备及其对抗坏血酸的检测[J].无机材料学报,2018,33(1):53-59,7.基金项目
国家自然科学基金(50907056, 51602266) （50907056, 51602266）
四川省重点研发计划(2017GZ0109) （2017GZ0109）
四川省科技支撑项目(2016GZ0273, 2016GZ0275) （2016GZ0273, 2016GZ0275）
四川省学术与技术带头人培养基金 （）
四川省成都市科技惠民工程(2014-HM01-00073-SF) National Natural Science Foundation of China (50907056, 51602266) （2014-HM01-00073-SF）
Sichuan Key Research and Development Pro-gram (2017GZ0109) （2017GZ0109）
Sichuan Science and Technology Support Projects (2016GZ0273, 2016GZ0275) （2016GZ0273, 2016GZ0275）
Sichuan Aca-demic and Technical Leaders Training Fund （）
Chengdu Science and Technology Huimin Project (2014-HM01- 00073-SF) （2014-HM01- 00073-SF）
