One-pot purification and functionalization of single-walled carbon nanotubes in less-corrosive poly(phosphoric acid)

被引：34

作者：

Han, Sang-Wook ^{[2
]}

Oh, Se-Jin ^{[2
]}

Tan, Loon-Seng ^{[3
]}

Baek, Jong-Beom ^{[1
,2
]}

机构：

[1] UNIST, Ulsan 689805, South Korea

[2] Chungbuk Natl Univ, Sch Chem Engn, Cheongju 361763, Chungbuk, South Korea

[3] USAF, Nanostruct & Biol Mat Branch, Mat & Mfg Directorate, AFRL RXBN,Res Lab, Wright Patterson AFB, OH 45433 USA

来源：

CARBON | 2008年 / 46卷 / 14期

关键词：

D O I：

10.1016/j.carbon.2008.07.026

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：

As-received commercial single-walled carbon nanotubes (SWCNTs) were treated in mild, inorganic polyacid, viz. polyphosphoric acid (PPA) with or without additional phosphorous pentoxide (P2O5) at 130, 160, and 190 degrees C. Unlike the treatment in strong acids such as nitric acid/sulfuric acid mixtures, nitric acid and hydrochloric acid, PPA with or without additional P2O5 could selectively remove the tenacious carbonaceous and metallic impurities with little or no damage to the basic frameworks of SWCNTs and crystalline carbon materials. Since the medium PPA/P2O5 is known for an efficient "direct" Friedel-Crafts acylation using a carboxylic acid instead of a carboxylic acid chloride, it provides the advantage of combining both purification and functionalization steps into a one-pot process in manufacturing of functionalized SWCNTs. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1841 / 1849

页数：9

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