摘要
化学还原剥离氧化石墨法制备的还原氧化石墨烯具有诸多优异性能,但所得还原氧化石墨烯横向尺度差异较大。利用化学还原法制备了还原氧化石墨烯,基于还原氧化石墨烯的AFM观测结果,初步统计分析了静置、磁力搅拌、离心和超声处理及它们的次序对还原氧化石墨烯横向尺寸分布的影响,结果表明后述3个步骤及次序是影响斑点状(横向尺寸<100nm×100nm)和树叶状(横向尺寸>500nm×500nm)还原氧化石墨烯横向尺寸分布的主要因素。
The reduce graphene oxide nanosheets, produced by chemical reduction of exfoliated graphite oxide, possess distinguished properties; however, their lateral-dimensions vary greatly, limiting their applications. Preliminary statistical analysis, based AFM images of reduced graphene oxide nanosheets, was performed for investigating the effects of standing-treatment, magnetic stirring, centrifugation, ultrasonication and their sequences to their lateral-dimensions distribution. The result shows that magnetic stirring, ultrasonication and centrifugation as well as their sequences mainly contribute to the distribution of dot-like reduced graphene oxide nanosheets （with lateral-dimensions less than 100nm×100nm） and leaf-like reduced graphene oxide nanosheets （with lateral-dimensions less than 500nm×500nm）.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2009年第10期1695-1698,共4页
Journal of Functional Materials
基金
国家高技术研究发展计划(863计划)资助项目(2009AA05Z419)
教育部新世纪优秀人才支持计划资助项目(NCET-07-0626)
上海市"科技创新行动计划"国际合作资助项目(08160706900)
关键词
化学法
还原氧化石墨烯
磁力搅拌
超声处理
离心处理
chemical method
reduced graphene oxide nanosheets
magnetic stirring
ultrasonication
centrifugation
