基于关键词共现网络法的中国石墨烯领域的研究热点分析

Study of Research Hotspots in Graphene Area in China by Keyword Co-occurrence Network Method

基于关键词共现网络的分析,可以帮助研究者们全面了解某一具体学科领域的研究热点与发展现状,为后期科学研究方向提供指导。此外,石墨烯作为一种低成本的绿色材料,近年来备受科学家们的青睐,在中国,关于石墨烯的研究涉及多个方面,但很难从中提炼出研究重点,不利于石墨烯领域后期的研究发展和产业化。本文从文献计量的角度,采用关键词共现网络分析方法,研究了中国2008—2018年关于石墨烯的文献,分析了石墨烯领域的研究热点。分析结果表明,该法能够高效地分析文献的关键词分布,挖掘出影响力较大的研究热点。在石墨烯领域,比较受关注的四个研究热点分别为氧化石墨烯(GO)、碳纳米管、力学性能和导电性能。对于热点GO,研究者们主要关注GO对有机复合材料性能的直接或间接提升作用以及GO相关材料作为重金属离子或有机物吸附剂在水处理领域中的应用;对于CNTs,人们主要关注CNTs/石墨烯家族相关的和多壁碳纳米管/石墨烯家族相关的复合材料的制备方法和应用;在力学性能热点中,学者们重点关注的是石墨烯力学性能的理论研究、石墨烯相关复合材料的制备方法及它们的力学性能,以及GO有机复合材料和还原氧化石墨烯(RGO)有机复合材料的力学性能;而在电学性能热点领域,相关研究者们重点关注RGO的导电性能和力学性能的优化方法、石墨烯性能和应用的总结、石墨烯改性方法、影响GO复合材料导电性能的因素以及石墨烯含量和制备方法对石墨烯复合材料性能的影响。希望本文能为解决同类的上述问题提供思路。

Keyword co-occurrence network method can help the researchers to know the research developments and hotspots of a subject comprehensively,and give instructions for the research work of people.What’s more,as the materials of low-cost and environment friendly,graphene have attracted much attention of the researchers.In China,studies about graphene involve many aspects,so it is difficult for the researchers to catch the main points of this area,which will hinder the research development and industrialization.In this paper,we analyze the hotspots of graphene area basing on the articles about graphene in CNKI from 2008 to 2018 by the bibliometric method of keyword co-occurrence network analysis.The research results indicate that this method can effectively analyze the keywords distribution and exploit the hotspots of graphene area.The top 4 hotspots in graphene area are“graphene oxide”,“carbon nanotubes”,“mechanical properties”and“electrical properties”.For the hotspot GO,people paid much attention to the properties of organic composites enhanced by GO directly or indirectly and the applications of GO-rela-ted materials in water purification as the absorbents for heavy metal ions or organics purification;for the hotspot,the researches focused on the preparing methods and applications of CNTs/graphene-family-related composites and MWCNs/graphene-family-related composites;for the hotspot mechanical properties in graphene field,authors paid much attention to the theoretical methods to study the mechanical properties of graphene,the preparing methods and mechanical properties graphene-related composites,as well as the mechanical properties of GO/organics or RGO/organics composites;for the hotspot electrical conductivities,the researchers’chief concerns were the improved methods to modify the electrical conductivities and mechanical properties of RGO,the summarization on properties and applications of graphene,the modifying methods to enhance the properties of graphene which included electrical conductivities,the factors influencing the electrical conductivities of GO-related composites,and the effects of the graphene contents and preparing methods on the properties of graphene-related composites.