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 language | English |
|---|---|
| Pages (from-to) | 153-158 |
| Number of pages | 6 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 444 |
| DOIs | |
| Publication status | Published - 5 Mar 2014 |
| Externally published | Yes |
Keywords
- Capacitive deionization
- Electrospinning
- Graphene oxide
- Porous carbon nanofiber
ASJC Scopus subject areas
- Surfaces and Interfaces
- Physical and Theoretical Chemistry
- Colloid and Surface Chemistry