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材料工程  2014 

基于高能微波真空辐射快速制备石墨烯

DOI: 10.11868/j.issn.1001-4381.2014.07.008, PP. 39-43

Keywords: 高能微波,真空,合成,氧化石墨,石墨烯

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Abstract:

基于高能微波处理技术,在强烈的非稳态条件下对氧化石墨进行剥离/还原,实现了石墨烯的快速制备。结果表明,经功率为6kW微波辐照,在≤35kPa的低真空谐振腔中,只用10s左右即可实现氧化石墨片层快速彻底的剥离,并可实现原位还原。通过SEM,TEM,TG-DSC等的微观结构表征显示,多数产物层数在2~3层之间,且样品中残留的含氧基团非常少。但也由于强烈的非稳态过程,石墨烯的制备效果存在着一定的分散性,样品中也夹杂有极少量层数约为10~20层的石墨烯微片。结果表明,采用高能微波辐照,并结合施加的真空环境,有助于强化或促进碳环片层的剥离/还原效果,实现高质量石墨烯的高效快速获取。

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