Graphene oxide-embedded porous carbon nanofiber webs by electrospinning for capacitive deionization

Yu Bai, Zheng Hong Huang, Xiao Liang Yu, Feiyu Kang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

56 Citations (Scopus)

Abstract

Novel freestanding graphene oxide (GO)-embedded porous carbon nanofiber (PCNF) webs were prepared by electrospinning from polyacrylonitrile and GO, followed by carbonization and steam activation, and their electrosorptive performance as binder-free electrodes in capacitive deionization was evaluated. Both GO-PCNF and PCNF demonstrated higher electrosorptive capacities than commercial activated carbon fiber by virtue of smaller diameter and shallower pores. More importantly, GO-PCNF webs processed higher mesopore ratio and electrical conductivity due to GO embedment, which could lead to reduced ion-transport obstacle and enhanced electrical double-layer capacitance, compared to pristine PCNF. Thus, GO-PCNF electrode exhibited better deionization performance.

Original languageEnglish
Pages (from-to)153-158
Number of pages6
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume444
DOIs
Publication statusPublished - 5 Mar 2014
Externally publishedYes

Keywords

  • Capacitive deionization
  • Electrospinning
  • Graphene oxide
  • Porous carbon nanofiber

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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