• 文献标题:   Adsorption and trace detection of copper ion by three-dimensional porous graphene composite gel
  • 文献类型:   Article
  • 作  者:   YIN L, YAN LT, HAO CS, BAI YH, GUO H
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS SCIENCEMATERIALS IN ELECTRONICS
  • ISSN:   0957-4522 EI 1573-482X
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1007/s10854-021-07401-4 EA NOV 2021
  • 出版年:   2022

▎ 摘  要

In this paper, a polydopamine-graphene composite gel (PDA-GA) was prepared from graphene oxide by a facile in-situ reduction assembly method using ascorbic acid combined with dopamine (DA). The morphology and microstructure of PDA-GA were characterized by SEM, XRD, FTIR, BET-BJH, and MIP, and the adsorption behavior of PDA-GA for Cu2+ was studied. Furthermore, the response ability of graphene composite gel-modified glassy carbon electrode (PDA-GH-GCE) to trace Cu(2+ )was investigated by linear sweep anodic stripping voltammetry. Results showed that when the mass ratio of graphene oxide to DA was 1:3, the adsorption effect of PDA-GA for Cu2+ was the best, and the adsorption capacity reached 316 mg/g. PDA-GA-GCE was sensitive to trace Cu2+, and the detection limit could reach 1.6 x 10(-7) mol/L.