Preparation and characterization of polyoxometalate-modified carbon nanosheets

被引：39

作者：

Fattakhova-Rohlfing, Dina ^{[1
]}

Kuhn, Alexander ^{[1
]}

机构：

[1] Univ Bordeaux 1, ENSCPB, Lab Anal Chim Reconnaissance Mol, F-33607 Pessac, France

来源：

CARBON | 2006年 / 44卷 / 10期

关键词：

highly oriented graphite; surface treatment; chemisorption; texture; electrochemical properties;

D O I：

10.1016/j.carbon.2006.02.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report an original approach for the preparation of quasi two-dimensional graphite sheets by exfoliation of highly oriented pyrolytic graphite. Pieces of HOPG were sonicated for variable time in aqueous solutions of phosphomolybdic acid. This leads to a gradual cleavage of the HOPG along the basal plane. The driving force of the process is the free energy resulting from the well-known strong chemisorption of phosphomolybdate ions on carbon. The resulting carbon nanostructures exhibit certain properties of the adsorbed polyoxometalate-anions. They form colloidal suspensions due to the negative surface charge and can be immobilized on surfaces containing cationic groups. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1942 / 1948

页数：7

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