• 文献标题:   An amplified electrochemical sensor employing a polymeric film and graphene quantum dots/multiwall carbon nanotubes in a deep eutectic solvent for sensitive analysis of paracetamol and 4-aminophenol
  • 文献类型:   Article
  • 作  者:   ARAB N, FOTOUHI L, SALIS A, DORRAJI PS
  • 作者关键词:  
  • 出版物名称:   NEW JOURNAL OF CHEMISTRY
  • ISSN:   1144-0546 EI 1369-9261
  • 通讯作者地址:   Alzahra Univ
  • 被引频次:   0
  • DOI:   10.1039/d0nj03371e
  • 出版年:   2020

▎ 摘  要

Herein, a nanocomposite consisting of graphene quantum dots, a deep eutectic solvent and carboxyl functionalized multiwall carbon nanotubes (GQDs + DES + MWCNTs-COOH) was prepared. After electropolymerization ofl-arginine on the surface of a glassy carbon electrode modified with the GQDs + DES + MWCNTs-COOH nanocomposite, an electrochemical sensor was fabricated. The morphology of the GQDs + DES + MWCNTs-COOH/PARG surface was characterizedviafield emission electron microscopy. The sensor allowed excellent performance to be obtained for the analytical monitoring of paracetamol and its metabolite 4-aminophenol. Under the optimal conditions, the prepared electrochemical sensor exhibited wide linear dynamic ranges from 0.030 to 110 mu mol L(-1)and 0.050 to 100 mu mol L(-1)for paracetamol and 4-aminophenol, respectively. Moreover, the detection limits were 0.010 mu mol L(-1)and 0.017 mu mol L-1, for paracetamol and 4-aminophenol, respectively. The practical applicability of the constructed sensor was explored by the determination of both compounds in human fluid samples and acceptable results were obtained.