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	多壁碳纳米管的纯化及其表面含氧基团的表征; Purification of Multiwalled Carbon Nanotubes and Characterization of Their Oxygen-Containing Surface Groups
	周金梅 ; 李海燕 ; 林国栋 ; 张鸿斌
	2010-11
关键词	多壁碳纳米管 纯化 表面含氧官能团 表面修饰 Multiwalled carbon nanotubes Purification Oxygen-containing surface group Surface modification
英文摘要	Corresponding author. Email: hbzhang@xmu.edu.cn.; [中文文摘]用兼具酸性和氧化性的HNO3水溶液可方便地除去残留在原生态多壁碳纳米管(CNT)上的Ni-MgO催化剂组分,同时在其表面产生某些含氧官能团,使原生态多壁碳纳米管的疏水性表面变为亲水性表面.采用Boehm中和滴定法以及X射线衍射(XRD)、热脱附谱(TPD)、傅里叶变换红外(FTIR)光谱和X射线光电子能谱(XPS)等技术对HNO3处理过的多壁碳纳米管的相组成和表面含氧官能团进行测量和表征.结果表明:所生成表面含氧官能团的总量以经7.0mol·L-1硝酸378K处理24h的CNT为最高;3种主要表面含氧官能团的含量高低顺序为,羧基>内酯型羧基>酚型羟基.[英文文摘]We conveniently removed the Ni-MgO catalyst components from an as-grown multiwalled carbon nanotube (CNT) using an aqueous HNO3 solution with strong acidity and oxidizability as a purifying reagent. Some oxygen-containing surface groups were generated at the CNT surface, which converted the hydrophobic surface into a hydrophilic surface. The phase composition and the oxygen-containing surface groups of the CNTs treated by nitric acid were determined and characterized using Boehm′s neutralizing titration method and X-ray powder diffraction (XRD), temperature-programmed desorption (TPD), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS) techniques. The results indicated that the total content of the formed oxygen-containing surface groups was the highest for the CNTs treated with 7.0 mol·L-1 aqueous HNO3 at 378 K for 24 h. The content of the three major oxygen-containing surface groups was: carboxyl>lactonic carboxyl>phenolic hydroxyl.; 国家重点基础研究发展规划项目(973)(2009CB939804);福建省重大科技专项专题项目(2009HZ0002-1)
语种	中文
出版者	《物理化学学报》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/3437]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	周金梅,李海燕,林国栋,等. 多壁碳纳米管的纯化及其表面含氧基团的表征, Purification of Multiwalled Carbon Nanotubes and Characterization of Their Oxygen-Containing Surface Groups[J],2010.
APA	周金梅,李海燕,林国栋,&张鸿斌.(2010).多壁碳纳米管的纯化及其表面含氧基团的表征..
MLA	周金梅,et al."多壁碳纳米管的纯化及其表面含氧基团的表征".(2010).

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