• 文献标题:   An electrochemical sensor for 1-naphthylamine based on a novel composite of cyclodextrin-graphene and molecularly imprinted poly(vinylferrocene)
  • 文献类型:   Article
  • 作  者:   TANG H, CHEN JR, ZENG YB, LI ZY, HUANG H, LI L
  • 作者关键词:  
  • 出版物名称:   ANALYTICAL METHODS
  • ISSN:   1759-9660 EI 1759-9679
  • 通讯作者地址:   Zhejiang Normal Univ
  • 被引频次:   6
  • DOI:   10.1039/c5ay03125g
  • 出版年:   2016

▎ 摘  要

A novel composite of a cyclodextrin-functionalized graphene nanosheet and molecularly imprinted poly(vinylferrocene) (GN/CD-MIPVF) was prepared. GN/CD-MIPVF employed vinylferrocene as a novel functional monomer, and it was applied to construct an electrochemical sensor for 1-naphthylamine (1-NA). Vinylferrocene as an electron mediator was covalently introduced into the surface imprinted composite to enhance the sensitivity of the GN/CD-MIPVF sensor. The GN/CD-MIPVF composite was characterized using Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, thermal gravimetric analysis, and scanning electron microscopy. The properties of the GN/CD-MIPVF sensor including its electrochemical behaviour, adsorption dynamics, and selectivity were evaluated by differential pulse voltammetry. The GN/CD-MIPVF composite containing ferrocene groups improved the electrocatalytic activity of its sensor and led to a higher peak current response compared to that produced by a traditional functional monomer like methacrylic acid. Under optimal conditions, the GN/CD-MIPVF sensor had a wide linear range over 1-NA concentrations from 0.3 to 100.0 mu M with a detection limit of 0.1 mu M (S/N = 3). The GN/CD-MIPVF sensor was satisfactorily used for the determination of 1-NA in environmental water samples.