基于三氯化铁催化作用制备大尺寸氧化石墨烯薄膜

doi:10.11944/j.issn.1000-0518.2018.02.170083

摘要/Abstract

摘要：

本文用三氯化铁(FeCl₃)作催化剂制备了大面积的氧化石墨烯(L-GO)薄膜。通过原子力显微镜(AFM)、偏光显微镜(POM)、红外光谱(FTIR)、X射线衍射(XRD)对FeCl₃催化剂存在下,不同温度和时间得到的L-GO薄膜进行形貌和结构研究。结果表明,在 FeCl₃催化下L-GO薄膜片畴的面积为10 μm×10 μm,与无催化作用得到的GO薄膜相比增加了大约4倍。从FTIR和XRD分析可以确定,大尺寸片畴的形成可以归因于催化作用促进了氧化石墨上的羟基、羧基、羰基等含氧官能团重新组合和连接。据此,提出了FeCl₃催化下L-GO薄膜形成模型,为制备大面积石墨烯薄膜提供了新的途径。

关键词: 三氯化铁, 催化剂, 片状氧化石墨烯, 大尺寸薄膜, 表面形貌, 红外光谱

Abstract:

In order to obtain large-area graphene oxide(L-GO) films, a series of FeCl₃-catalyzed L-GO films are prepared. The surface morphology and structure of L-GO films synthesized with various temperatures and times are studied by atomic force microscope(AFM), polarizing microscope(POM), Fourier transform infrared spectrometer(FTIR), and X-ray diffraction(XRD). The sheet domain area of FeCl₃-catalyzed L-GO films is 10 μm×10 μm, which increases about four times in contrast to that of GO films prepared without catalyst. By further analysis of FTIR and XRD, the formation of L-GO domains can be attributed to the new connections of the hydroxyl, carboxyl, and carbonyl groups in graphene oxide under FeCl₃ catalysis. Thus, a formation model of FeCl₃-catalyzed L-GO films is proposed, which provides a new way for the preparation of large area graphene oxide films.

Key words: iron chloride, catalyst, graphene oxide sheet, large-size thin film, surface morphology, Fourier transform infrared spectroscopy

李占国, 范思大, 张梁, 张沛沛, 孙丽晶, 尹丽, 张吉东, 王丽娟. 基于三氯化铁催化作用制备大尺寸氧化石墨烯薄膜[J]. 应用化学, 2018, 35(2): 232-238.

LI Zhanguo, FAN Sida, ZHANG Liang, ZHANG Peipei, SUN Lijing, YIN Li, ZHANG Jidong, WANG Lijuan. Preparation of Large-size Graphene Oxide Films Based on Iron(Ⅲ) Chloride Catalysis[J]. Chinese Journal of Applied Chemistry, 2018, 35(2): 232-238.

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