Fast functionalization of vertically aligned multiwalled carbon nanotubes using oxygen plasma

被引：89

作者：

Lobo, Anderson Oliveira ^{[1
]}

Ramos, Sandra Cristina ^{[2
]}

Antunes, Erica Freire ^{[3
]}

Marciano, Fernanda Roberta ^{[1
]}

Trava-Airoldi, Vladimir Jesus ^{[2
]}

Corat, Evaldo Jose ^{[2
]}

机构：

[1] Univ Vale Paraiba, Lab Nanotecnogia Biomed NanoBio, BR-12244000 Sao Jose Dos Campos, SP, Brazil

[2] Inst Nacl Pesquisas Espaciais, Lab Associado Sensores & Mat LAS, BR-12227010 Sao Jose Dos Campos, SP, Brazil

[3] ITA, BR-12228900 Sao Jose Dos Campos, SP, Brazil

来源：

MATERIALS LETTERS | 2012年 / 70卷

基金：

巴西圣保罗研究基金会;

关键词：

Carbon nanotubes; Vertically aligned; DC plasma; Oxygen plasma; Superhydrophilic; RAMAN-SPECTRA; OXIDATION; SURFACES; ACID; DIAMETER;

D O I：

10.1016/j.matlet.2011.11.071

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work studied oxygen plasma treatment, at different times, on vertically aligned multiwalled carbon nanotube (VACNT) surfaces using the pulsed-discharge plasma technique. As-grown VACNT surfaces were superhydrophobic. Pure oxygen plasma etching modified VACNT surfaces to get a superhydrophilic behavior after only 2 min. Contact angle and surface energy measurements by the sessile drop method examined the VACNT surface wetting. X-ray Photoelectron Spectroscopy showed the heavy grafting of oxygen-groups onto VACNT surfaces after oxygen plasma etching. The results showed the great influence of polar groups on wetting behavior, with a strong correlation between the polar part of the surface energy and the oxygen content on the VACNT surfaces. These findings proved that oxygen plasma etching is a rapid and efficient method for functionalization of VACNT surfaces. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：89 / 93

页数：5

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