Glassy carbon electrode modified with poly(taurine)/TiO2-graphene composite film for determination of acetaminophen and caffeine
| Autor: | Chun-Xue Jin, Chun-Xuan Xu, Ke-Jing Huang, Xiao-Qin Xiong, Qiu-Ge Zhai |
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| Rok vydání: | 2013 |
| Předmět: |
Nanocomposite
Materials science Graphene General Chemical Engineering Inorganic chemistry lcsh:TP155-156 electropolymerization Electrochemistry Electrochemical gas sensor law.invention TiO2-graphene nanocomposite law Electrode Differential pulse voltammetry lcsh:Chemical engineering Cyclic voltammetry taurine lcsh:HD9650-9663 Biosensor acetaminophen caffeine lcsh:Chemical industries |
| Zdroj: | Chemical Industry and Chemical Engineering Quarterly, Vol 19, Iss 3, Pp 359-368 (2013) |
| ISSN: | 2217-7434 1451-9372 |
| DOI: | 10.2298/ciceq120325070x |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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