Separation of graphene oxide by density gradient centrifugation and study on their morphology-dependent electrochemical properties

	Separation of graphene oxide by density gradient centrifugation and study on their morphology-dependent electrochemical properties
	Li S ; Zhu FS ; Meng FJ ; Li HB ; Wang L ; Zhao JJ ; Yue QL ; Liu JF ; Jia JB
刊名	journal of electroanalytical chemistry
	2013
卷号	703 页码:135-145
关键词	WALLED CARBON NANOTUBES ELECTRONIC-STRUCTURE CAPILLARY-ELECTROPHORESIS RAMAN-SPECTROSCOPY BILAYER GRAPHENE OXYGEN REDUCTION DOPED GRAPHENE GRAPHITE OXIDE FUNCTIONALIZATION NANOSHEETS
ISSN号	1572-6657
通讯作者	liu jf
中文摘要	graphene oxide (go) made from graphite oxidation by hummer's method is a mixture of go sheets with different size and thickness. previous work has shown that these go sheets have different electrophoretic properties and can be separated via capillary electrophoresis according to their surface charge u. zhao et al., anal. chem. 83 (2011) 9100-9106). herein, the go sheets were separated by density gradient centrifugation to achieve preparation of bulk go materials. go sheets were separated by their thicknesses and the as-obtained sheets were characterized for their spectroscopic, electronic and electrochemical properties. after treated by hydrazine, go was derivatized with n element and become active toward oxygen reduction reaction. the thin layer go sheets incorporated with more hydrazine and the atomic ratio of n/c was higher than thick layer go sheets. this work suggested that the physicochemical properties of go sheets were n of layer related and it is necessary to separate go sheets to prepare suitable materials for device fabrication or catalysts use. (c) 2013 elsevier b.v. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000322940300018
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49674]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Li S,Zhu FS,Meng FJ,et al. Separation of graphene oxide by density gradient centrifugation and study on their morphology-dependent electrochemical properties[J]. journal of electroanalytical chemistry,2013,703:135-145.
APA	Li S.,Zhu FS.,Meng FJ.,Li HB.,Wang L.,...&Jia JB.(2013).Separation of graphene oxide by density gradient centrifugation and study on their morphology-dependent electrochemical properties.journal of electroanalytical chemistry,703,135-145.
MLA	Li S,et al."Separation of graphene oxide by density gradient centrifugation and study on their morphology-dependent electrochemical properties".journal of electroanalytical chemistry 703(2013):135-145.