自由基反应诱导的溴功能化还原氧化石墨烯的制备

doi:10.7503/cjcu20160813

高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (5): 786.doi: 10.7503/cjcu20160813

自由基反应诱导的溴功能化还原氧化石墨烯的制备

邢瑞光, 李亚男, 张邦文, 布林朝克

内蒙古科技大学材料与冶金学院, 包头 014010

收稿日期:2016-11-21 出版日期:2017-05-10 发布日期:2017-04-14
作者简介:联系人简介: 李亚男, 女, 讲师, 主要从事石墨烯功能化及其复合材料方面的研究. E-mail:ynli2014@126.com
基金资助:
内蒙古自治区自然科学基金项目(批准号: 2014BS0202)、内蒙古科技大学创新基金(批准号: 2014QDL018)和内蒙古科技大学材料与冶金学院青年人才孵化器平台支助项目(批准号: 2014CY012)资助

Preparation of Bromo-functionalized Reduced Graphene Oxide by Radical Reaction^†

XING Ruiguang, LI Yanan^*, ZHANG Bangwen, BULIN Chaoke

School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China

Received:2016-11-21 Online:2017-05-10 Published:2017-04-14
Contact: LI Yanan
Supported by:
† Supported by the Natural Science Foundation of Inner Mongolia, China(No.2014BS0202), the Inner Mongolia University of Science and Technology Innovation Fund, China(No.2014QDL018) and the Talent Incubation Funding of School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, China(No.2014CY012)

摘要/Abstract

摘要：

以氧化石墨烯(GO)为原料, N-溴代丁二酰亚胺(NBS)为溴代试剂, 硫代硫酸钠为还原剂, 通过羧基化、溴化和还原三步法, 采用自由基反应的方式制备了溴功能化还原氧化石墨烯(rGOBr). 通过X射线衍射、扫描电子显微镜、红外光谱、拉曼光谱以及X射线光电子能谱等手段对rGOBr的结构、微观形貌和元素组成进行了表征. 结果表明, 溴元素以共价键的形式分布在石墨烯表面. 本方法原料来源广泛、操作简单且条件温和, 为石墨烯的溴功能化提供了一条新途径.

关键词: 石墨烯, 自由基, 溴化, 还原

Abstract:

Bromo-functionalized reduced graphene oxide(rGOBr)which is a new derivative functionalization of graphene was prepared from graphene oxide(GO) by free radical reaction in three steps, NBS as the brominating agents and sodium thiosulfate as the reducing agent. The structure and surface morphology were investigated via X-ray diffraction(XRD), scanning electron microscopy(SEM), infrared spectrum(IR), Raman spectroscopy and X-ray photoelectron spectroscopy(XPS). The results showed that the bromine atoms were distributed uniformly on the surface of rGOBr sheets with covalent bond. This method asked for easily available raw materials, mild reaction conditions as well as simple operation, which provided enlightening insights into the chemical modification and prearation of bromo-functionalized graphene, as well as promotes more research enthusiasm and interest into bromo-functionalized graphene and other graphene materials.

Key words: Graphene, Free radical, Bromo-functionalization, Reduction

中图分类号:

O622

TrendMD:

邢瑞光, 李亚男, 张邦文, 布林朝克. 自由基反应诱导的溴功能化还原氧化石墨烯的制备. 高等学校化学学报, 2017, 38(5): 786.

XING Ruiguang, LI Yanan, ZHANG Bangwen, BULIN Chaoke. Preparation of Bromo-functionalized Reduced Graphene Oxide by Radical Reaction^†. Chem. J. Chinese Universities, 2017, 38(5): 786.

图/表 5

Scheme 1 Process and possible mechanism of covalent functionalization of graphene by the radical reaction

Fig.1 FESEM images(A, B) and the corresponding element distributions for C(C) and Br(D) of rGOBr

Fig.2 XRD patterns(A) and TGA curves(B) of GO(a), GOCOOH(b) and rGOBr(c)

Fig.3 FTIR spectra(A) and Raman spectra(B) of GO(a), GOCOOH(b) and rGOBr(c)

Fig.4 Core-level XPS spectra of C1s(A) and Br2p(B) spectra of rGOBr

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自由基反应诱导的溴功能化还原氧化石墨烯的制备

Preparation of Bromo-functionalized Reduced Graphene Oxide by Radical Reaction^†

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自由基反应诱导的溴功能化还原氧化石墨烯的制备

Preparation of Bromo-functionalized Reduced Graphene Oxide by Radical Reaction†

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Preparation of Bromo-functionalized Reduced Graphene Oxide by Radical Reaction^†