Regeneration of carbon nanotube and nanofibre composite film electrode for electrical removal of cupric ions

  • Yankun Zhan
  • , Haibo Li
  • , Likun Pan*
  • , Yanping Zhang
  • , Yiwei Chen
  • , Zhuo Sun
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Low cost and large scale carbon nanotube and nanofibre (CNT-CNF) composite films have been fabricated and employed as electrodes for electrosorption of cupric ions. The regeneration of the saturated CNT-CNF film electrode has been investigated. Three methods (short-circuiting, short-circuiting and then reversing voltage, reversing voltage and then short-circuiting) are used for regeneration. The results show that low regeneration efficiency of CNT-CNF film electrode due to electrodeposition of Cu on the electrode surface can be highly improved by regeneration applying reverse voltage combined with short circuit. 93% regeneration efficiency can be achieved when 0.8 V reverse voltage is applied before short-circuiting during regeneration of CNT-CNF film electrode.

Original languageEnglish
Pages (from-to)1427-1432
Number of pages6
JournalWater Science and Technology
Volume61
Issue number6
DOIs
StatePublished - 2010
Externally publishedYes

Keywords

  • Cupric ions
  • Electrosorption
  • Regeneration

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