Influence of surface functionalization via chemical oxidation on the properties of carbon nanotubes

被引：115

作者：

Chen, Jiuling ^{[1
,2
]}

Chen, Qinghai ^{[2
]}

Ma, Qing ^{[1
]}

机构：

[1] Univ Queensland, Sch Chem Engn, St Lucia, Qld 4072, Australia

[2] Tianjin Univ, Sch Chem Engn, Dept Catalysis Sci & Technol, Tianjin 300072, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2012年 / 370卷

关键词：

Carbon nanotubes; Surface functionalization; Oxygen-containing functional groups; Chemical oxidization; Surface hydrophilicity; NITRIC-ACID; CATALYSTS; HYDROGENATION; CHEMISTRY; ADSORPTION; NANOFIBERS; DISPERSION; OXIDES; WATER; CO;

D O I：

10.1016/j.jcis.2011.12.073

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：

The surface of carbon nanotubes (CNTs) was functionalized in different chemical oxidants, hydrogen peroxide, mixed concentrated HNO3/H2SO4 and acidic KMnO4 solution. The influences on the properties of CNTs were systematically investigated, such as the structure, the kinds and the contents of the formed surface oxygen-containing functional groups, the pH(PZC) values and the surface hydrophilicity using XRD, HREM, FTIR and chemical titration. The results show that the kinds and the contents of the surface oxygen-containing groups are dependent on the functionalization methods. The formation of the oxygen-containing groups can decrease pH(PZC) values and improve surface hydrophilicity of CNTs. The dispersion of the supported Pd-Pt particles on the functionalized CNTs and their catalytic activity in the profile reaction of naphthalene hydrogenation to tetralin are both promoted due to the presence of these oxygen-containing groups. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：32 / 38

页数：7

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