Glassy Carbon Electrode Modified with Poly(Taurine)/Tio2-Graphene Composite Film for Determination of Acetaminophen and Caffeine
Chemical Industry & Chemical Engineering Quarterly(2013)
摘要
A novel electrochemical sensor poly(taurine)/TiO2-graphene nanocomposite modified glassy carbon electrode (PT/TiO2-Gr/GCE) was fabricated. This sensor was based on an electrochemically polymerized taurine layer on a TiO2-graphene modified glassy carbon electrode. The electrochemical behaviors of acetaminophen and caffeine at the modified electrode were studied by cyclic voltammetry and differential pulse voltammetry. The results showed that the oxidation peak currents of acetaminophen and caffeine were linear with their concentrations in the range of 1?10-7-9?10-5 M and 2.5?10-5-2?10-4 M, respectively. The detection limits of acetaminophen and caffeine were 3.4?10-8 M and 5.0?10-7 M, respectively (S/N=3). This modified electrode showed good sensitivity and stability, which had promising potential applications in electrochemical sensors and biosensors design.
更多查看译文
关键词
taurine,TiO2-graphene nanocomposite,acetaminophen,caffeine,electropolymerization
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要