Water-Soluble Polymer Exfoliated Graphene: As Catalyst Support and Sensor

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• 作者：Haibo Wang ; Baoyu Xia ; Ya Yan ; Nan Li ; Jing-Yuan Wang ; Xin Wang
• 刊名：The Journal of Physical Chemistry B
• 出版年：2013
• 出版时间：May 9, 2013
• 年：2013
• 卷：117
• 期：18
• 页码：5606-5613
• 全文大小：477K
• 年卷期：v.117,no.18(May 9, 2013)
• ISSN：1520-5207

文摘

In this paper, we obtained various water-soluble polymer functionalized graphene in dimethyl sulfoxide under ultrasonication. The atomic force microscope analysis and control experiment shows the water-soluble polymer is the crucial part to help solvent molecules separate interlayer. Such polymer/graphene exhibits high conductivity and tunable surface property, as confirmed by the selected area electron diffraction and Raman and electrochemical impedance spectroscopy. As a result, a catalyst based on polyvinyl pyrrolidone (PVP)/graphene shows better methanol oxidation performance than that based on PVP/reduced graphene oxide. By changing to another polymer, poly(4-vinylpyridine)/graphene shows a stable and reversible response to pH, and demonstrates its potential for sensor application.