Electrosorption of anions with carbon nanotube and nanofibre composite film electrodes

The electrosorption of different salt solutions with carbon nanotube and nanofibre (CNT–CNF) composite film electrodes was studied. The electrochemical properties of CNT–CNF film were systematically investigated using ac impedance spectroscopy and cyclic voltammetry, and it was found that capacitive...

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Bibliographic Details
Published in:Desalination 2009-08, Vol.244 (1), p.139-143
Main Authors: Pan, Likun, Wang, Xinzheng, Gao, Yang, Zhang, Yanping, Chen, Yiwei, Sun, Zhuo
Format: Article
Language:English
Subjects:
Applied sciences
Carbon nanotube and nanofibre
Deionization
Electrical double-layer capacitance
Electrosorption
Exact sciences and technology
Pollution
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Summary:The electrosorption of different salt solutions with carbon nanotube and nanofibre (CNT–CNF) composite film electrodes was studied. The electrochemical properties of CNT–CNF film were systematically investigated using ac impedance spectroscopy and cyclic voltammetry, and it was found that capacitive deionization (CDI) of CNT–CNF composite film electrodes is mainly due to Coulombic interaction on the electrical double-layer. Several experiments were conducted to determine the ion removal capacity and selectivity of CNT–CNF composite film electrodes, showing that smaller hydrated anions exhibit better CDI capacities.
ISSN:0011-9164
1873-4464
DOI:10.1016/j.desal.2008.05.019