Tuning the work function of surface oxidised multi-wall carbon nanotubes via cation exchange

被引：59

作者：

Blanchard, N. P. ^{[1
]}

Hatton, R. A. ^{[1
]}

Silva, S. R. P. ^{[1
]}

机构：

[1] Univ Surrey, Adv Technol Inst, Guildford GU2 7XH, Surrey, England

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 434卷 / 1-3期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/j.cplett.2006.11.100

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 a large reduction in the work function of acid oxidised multi-wall carbon nanotubes upon exchange of protons associated with acidic surface groups with the alkali metal cations Li+, Na+ and K+ measured using ultra-violet photoelectron spectroscopy. X-ray photoelectron spectroscopy provides compelling evidence for the preferential uptake of Na+, over Li+ and K+ and yields an estimate of the density of surface bound carboxylic acid moieties onto which functional organic molecules can be chemically attached. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：92 / 95

页数：4

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