期刊
CARBON
卷 49, 期 10, 页码 3346-3355出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2011.04.040
关键词
-
资金
- National Natural Science Foundation of China [50733001]
The microstructure and electronic structure of modified carbon black (CB) were investigated by Raman spectroscopy, transmission electron microscopy, electron energy loss spectroscopy and ultraviolet spectroscopy. The modified CB samples include oxidised CB and ultrasound-treated CB under different modification conditions. Typical parameters, such as graphene layer size, the ratio of sp(2)/sp(3)-hybridised carbon atoms, energy gap (E(g)), and pi-pi band position, provide information on the microstructure and electronic structure, and these parameters also allow discrimination between different modified CB samples to achieve a desired structure. Oxidation conditions could be carefully chosen to prevent excessive corrosion and form an ordered structure. However, ultrasound has a reverse effect; the graphite layers of the CB samples were exfoliated, and a disordered microstructure was visible. The results indicate that increasing sp(2)-island size in CB samples decreases the optical gap and increases ultraviolet absorption. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据