期刊
RSC ADVANCES
卷 3, 期 4, 页码 1194-1200出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra21825a
关键词
-
资金
- National Basic Research Program of China [2012CB932303]
- National Natural Science Foundation of China [51072215, 51172261]
Homogeneous colloidal dispersions of nitrogen-doped graphene in N,N-dimethyformamide (DMF) were readily prepared through a facile hydrazine-assisted solvothermal reduction method. The reduced graphene oxide (RGO) sample, prepared at a weight ratio of hydrazine to graphene oxide (GO) of 1.4 : 1 at 180 degrees C, was found to possess the highest conductivity (2716.2 S m(-1)) and good dispersibility (0.5 mg mL(-1)). This work has not only developed an efficient route to prepare high-quality graphene, but also provides a systematic elucidation of the reaction mechanism for the de-oxygenation of GO based on product characterization. It was found that all of the oxygen-containing groups were reduced by hydrazine-assisted solvothermal reduction. The deoxygenation of GO and re-establishment of the conjugated graphene network were significantly promoted by hydrazine de-epoxidation, a Wolff-Kishner-Huang-type reduction, as well as reactions between metastable NHNH2 and hydroxyl groups. The ease of synthesis of nitrogen-doped RGO with both high conductivity and excellent dispersibility will greatly facilitate potential applications.
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