Nitrogen-doped carbon nanotubes decorated poly (L-Cysteine) as a novel, ultrasensitive electrochemical sensor for simultaneous determination of theophylline and caffeine
文献类型：期刊论文
| 作者 | Wang, Yingzi; Ding, Yaping1; Li, Li; Hu, Ping2 |
| 刊名 | TALANTA
 |
| 出版日期 | 2018 |
| 卷号 | 178页码:449 |
| ISSN号 | 0039-9140 |
| 关键词 | Nitrogen-doped carbon nanotubes L-Cysteine Electrocheinical nanosensor Theophylline Caffeine |
| DOI | 10.1016/j.talanta.2017.08.076 |
| 英文摘要 | In present study, a novel and facile electrochemical sensor based on glassy carbon electrode (GCE) modified with nitrogen-doped carbon nanotubes (N-CNT) decorated with poly (L-Cysteine) (PLCY) were fabricated and applied for the simultaneous voltammetric determination of theophylline (THEO) and caffeine (CAF). The morphology and structure of multilayer film modified on the surface of glassy carbon electrode were investigated successfully by Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM) and Raman Spectroscopy. And the properties of the modified electrode were investigated by Chronocoulometry (CC), Cyclic Voltammetry (CV) and Differential Pulse Voltammetry (DPV) were utilized to investigate the electrochemical behavior of THEO and CAF on the composite film modified electrode. The results showed that the determination towards THEO and CAF can be operated at the same potential window with the oxidation current peak separated and non-interfering respectively. Compared to the bare GCE, the PLCY/N-CNT/GCE can signally meliorate the electrocatalytic activity towards the oxidation of THEO and CAF with a remarkably increase in the anodic peak currents of 495.94% and 465.48%. Under the optimal conditions, the fabrication multilayer film sensor had excellent performances in determination towards THEO and CAF with a wide linear dynamic range from 0.10 to 70.0 mu M and 0.40-140.0 mu M, low detection limit (S/N = 3) of 0.033 mu M and 0.20 mu M, respectively. The PLCY/N-CNT/GCE sensor also had advantages as easy-made, high-sensitivity, stability and reproducibility. Moreover, it was successfully used to analyze the THEO and CAF in green tee, oral theophylline sustained release tablets and energy drink sample with a satisfactory result. |
| 学科主题 | Chemistry, Analytical |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000416615500059 |
| 资助机构 | The authors would like to thank the National Natural Science Foundation of China (Grant no. 21671132) and partly supported by Shanghai Key laboratory of High Temperature Superconductors, the Science and Technology Commission of Shanghai Municipality (Grant no. 14DZ2260700) for financial supports. ; The authors would like to thank the National Natural Science Foundation of China (Grant no. 21671132) and partly supported by Shanghai Key laboratory of High Temperature Superconductors, the Science and Technology Commission of Shanghai Municipality (Grant no. 14DZ2260700) for financial supports. |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24529]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Shanghai Univ, Dept Chem, Shanghai 200444, Peoples R China 2.Shanghai Univ, Shanghai Key Lab High Temp Superconductors, Shanghai 200444, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yingzi,Ding, Yaping,Li, Li,et al. Nitrogen-doped carbon nanotubes decorated poly (L-Cysteine) as a novel, ultrasensitive electrochemical sensor for simultaneous determination of theophylline and caffeine[J]. TALANTA,2018,178:449, 457. |
| APA | Wang, Yingzi,Ding, Yaping,Li, Li,&Hu, Ping.(2018).Nitrogen-doped carbon nanotubes decorated poly (L-Cysteine) as a novel, ultrasensitive electrochemical sensor for simultaneous determination of theophylline and caffeine.TALANTA,178,449. |
| MLA | Wang, Yingzi,et al."Nitrogen-doped carbon nanotubes decorated poly (L-Cysteine) as a novel, ultrasensitive electrochemical sensor for simultaneous determination of theophylline and caffeine".TALANTA 178(2018):449. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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