磺化石墨烯及其导电炭薄膜的制备与性能

doi:10.3724/SP.J.1077.2012.12135

无机材料学报 ›› 2012, Vol. 27 ›› Issue (12): 1271-1276.DOI: 10.3724/SP.J.1077.2012.12135 CSTR: 32189.14.SP.J.1077.2012.12135

磺化石墨烯及其导电炭薄膜的制备与性能

袁文辉¹, 顾叶剑¹, 李保庆¹, 李莉²

(华南理工大学 1. 化学与化工学院; 2. 环境科学与工程学院, 广州510640)

收稿日期:2012-03-04 修回日期:2012-04-12 出版日期:2012-12-20 网络出版日期:2012-11-19
基金资助:
国家自然科学基金(20976057)

Synthesis and Characterization of Sulfonated Graphene and Conducting Films

YUAN Wen-Hui¹, GU Ye-Jian¹, LI Bao-Qing¹, LI Li²

(1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China; 2. College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640, China)

Received:2012-03-04 Revised:2012-04-12 Published:2012-12-20 Online:2012-11-19
Supported by:
National Natural Science Foundation of China (20976057)

摘要/Abstract

摘要： 以石墨为原料, 采用Hummers法液相氧化合成了氧化石墨(GO), 通过低温真空剥离预还原、磺化反应、葡萄糖二次还原, 合成了高质量的磺化石墨烯(S-GNS), 有效避免了在此过程中石墨烯大量团聚的现象. 采用傅里叶变换红外(FTIR)光谱、X射线光电子能谱(XPS)、热重分析仪(TG)、X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和原子力显微镜(AFM)等分析手段对磺化石墨烯样品进行了表征. 实验结果表明: 对氨基苯磺酸成功地接枝到了石墨烯上, 磺化石墨烯还原彻底, 热稳定性能高; 石墨烯表面平整, 缺陷少; 单层磺化石墨烯厚度约为1.2 nm. 水溶性、分散性实验结果表明: 磺化石墨烯拥有高水溶性和高分散性. BET比表面积及电性能测试表明: 磺化石墨烯的比表面积高达806.4 m²/g, 薄膜材料的导电率为1150 S/m.

关键词: 石墨烯, 氧化石墨, 磺化, 氧化还原

Abstract: Graphite oxide (GO) was prepared from graphite by Hummers liquid oxidation method and the sulfonated graphene (S-GNS) was then prepared by pre-reduction, sulfonation and post-reduction. Glucose was also used to reduce the agglomeration among the graphene layers. The as-prepared sulfonated graphene was characterized by Fourier transform infrared spectroscope (FT-IR), X-ray photoelectron spectroscope (XPS), Thermo- gravimetric analysis (TG), X-ray diffraction (XRD), Scanning electron microscope (SEM), Transmission electron microscope (TEM) and Atomic force microscope (AFM), respectively. The experimental results indicate that the graphene of the p-phenyl-SO₃H groups is successfully grafted into graphite oxide, and graphite oxide is completely reduced to sulfonated graphene. The sulfonated graphene possesses high thermal stability, smooth surface and few defects, and the thickness of single layer graphene is approximately 1.2 nm. Water solubility and dispersion results show that the sulfonated graphene can be dispersed into water with good water solubility. In addition, the BET specific surface area and the electrical conductivity of the sulfonated graphene film are up to 806.4 m²/g and 1150 S/m, respectively.

Key words: graphene, graphite oxide, sulfonation, oxidation-reduction

中图分类号:

O647

袁文辉, 顾叶剑, 李保庆, 李莉. 磺化石墨烯及其导电炭薄膜的制备与性能[J]. 无机材料学报, 2012, 27(12): 1271-1276.

YUAN Wen-Hui, GU Ye-Jian, LI Bao-Qing, LI Li. Synthesis and Characterization of Sulfonated Graphene and Conducting Films[J]. Journal of Inorganic Materials, 2012, 27(12): 1271-1276.

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磺化石墨烯及其导电炭薄膜的制备与性能

Synthesis and Characterization of Sulfonated Graphene and Conducting Films

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