The release of free standing vertically-aligned carbon nanotube arrays from a substrate using CO2 oxidation

被引：39
作者：
Huang, Jia-Qi [1 ]
Zhang, Qiang [1 ]
Zhao, Meng-Qiang [1 ]
Wei, Fei [1 ]
机构：
[1] Tsinghua Univ, Dept Chem Engn, Beijing Key Lab Green Chem React Engn & Technol, Beijing 100084, Peoples R China
来源：
CARBON | 2010年 / 48卷 / 05期
关键词：
FIELD-EMISSION; GROWTH; ACTIVATION; WATER; GASIFICATION; PYROLYSIS; CARPETS; DIOXIDE; SPHERES; FILMS;
D O I：
10.1016/j.carbon.2009.12.038
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：
Free standing vertically-aligned carbon nanotube (CNT) arrays were released from a quartz substrate on a large scale by using CO2 as an oxidative reagent to weaken the array-substrate interaction and facilitate their harvest During the oxidation process, amorphous carbon and carbon in contact with metallic particles were preferentially etched, leading to the easy release of high quality free standing CNT arrays O-2 was also used as an oxidant for comparison The O-2 showed a stronger oxidizability and caused the formation of CNTs with a turbostratic-graphitic carbon heterojunction structure The mechanisms Of CO2 and O-2 oxidation of CNT arrays were investigated, and based on these results, CO2 was considered a more suitable oxidant for the purpose (C) 2009 Elsevier Ltd. All rights reserved
引用
收藏
页码：1441 / 1450
页数：10
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