Kinetics and thermodynamics study for electrosorption of NaCl onto carbon nanotubes and carbon nanofibers electrodes

Haibo Li, Likun Pan, Yanping Zhang, Linda Zou, Changqing Sun, Yankun Zhan, Zhuo Sun

Research output: Contribution to journalArticlepeer-review

128 Scopus citations

Abstract

The carbon nanotubes and carbon nanofibers composite films (CNTs-CNFs) were fabricated by chemical vapor deposition. The electrosorption performance of CNTs-CNFs films at different solution temperatures was studied. It is found that the salt removal decreases from 45.4% to 33% due to hydrophobic-hydrophilic transition taking place on the surface of CNTs-CNFs films, when solution temperature ranges from 281 to 295 K. The electrosorption isotherm investigation shows Langmuir isotherm can better describe experimental data. Meanwhile, the kinetics and thermodynamics analyses indicate that the electrosorption of NaCl onto CNTs-CNFs electrodes follows first-order kinetics model and is driven by a physisorption process.

Original languageBritish English
Pages (from-to)161-166
Number of pages6
JournalChemical Physics Letters
Volume485
Issue number1-3
DOIs
StatePublished - 18 Jan 2010

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