Electrosorption behavior of cations with carbon nanotubes and carbon nanofibres composite film electrodes

被引：116

作者：

Gao, Yang ^{[1
]}

Pan, Likun ^{[1
]}

Li, HaiBo ^{[1
]}

Zhang, Yanping ^{[1
]}

Zhang, Zhejuan ^{[1
]}

Chen, Yiwei ^{[1
]}

Sun, Zhuo ^{[1
]}

机构：

[1] E China Normal Univ, Dept Phys, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China

来源：

THIN SOLID FILMS | 2009年 / 517卷 / 05期

关键词：

Carbon nanotubes and carbon nanofibres; Electrosorption; Ion charge; Hydrated radius; Electrical double-layer; CAPACITIVE DEIONIZATION; AQUEOUS-SOLUTIONS; NACL SOLUTION; AEROGEL; IONS; REMOVAL; CLOTH;

D O I：

10.1016/j.tsf.2008.09.065

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The cost-effective, large area carbon nanotubes and carbon nanofibres (CNTs-CNFs) composite film was synthesized on graphite substrate by low pressure and low temperature thermal chemical vapor deposition. Cyclic voltammetry and ac impedance spectroscopy were employed to systematically study the electrochemical properties of CNTs-CNFs film. The electrosorption in salt solutions by CNTs-CNFs film electrodes was studied. It is found that electrosorption of CNTs-CNFs film electrodes is mainly due to Coulombic interaction on the electrical double-layer. Several experiments were conducted to study the ion removal capacity and selectivity of CNTs-CNFs film electrodes, showing that multivalent cations were preferentially adsorbed from the aqueous solution. For cations with same charge, the one with smaller hydrated radius would be more effectively removed. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1616 / 1619

页数：4

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