Analysis of oxidation degree of graphite oxide and chemical structure of corresponding reduced graphite oxide by selecting different-sized original graphite

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2018专题

	Analysis of oxidation degree of graphite oxide and chemical structure of corresponding reduced graphite oxide by selecting different-sized original graphite
	Zhang, Lihua; Shen, Lu; Wang, Kui; Miao, Lijing; Lan, Qiaofeng; Jiang, Kemin; Lu, Huanming; Li, Ming; Li, Yong; Shen, Bin
刊名	RSC ADVANCES
	2018
卷号	8 期号:31 页码:17209-17217
关键词	Graphene-oxide Electrochemical Properties Functionalized Graphene Exfoliation Reduction Sheets Carbon Supercapacitors Atmosphere Films
英文摘要	The thermal exfoliation and reduction of graphite oxide (GO) is the most commonly used strategy for largescale preparation of graphene, and the oxidation degree of GO would influence the chemical structure of prepared graphene, thereby affecting its final physical and chemical properties. In addition to serving as the precursor for synthesizing graphene, GO also possesses great potential for various important applications owing to its abundant oxygen-containing groups and hybrid electronic structure. Therefore, systematically studying the influencing factors on the oxidation degree of GO and clarifying the effect of oxidation degree on the corresponding graphene is particularly important. Herein, we have studied the effect of the lateral size of the original graphite on the oxidation degree of GO in order to control the oxidation degree of GO. GOs with different degrees of oxidation were synthesized using a modified Hummers method. The results of X-ray diffraction (XRD), X-ray photoelectron spectra (XPS) and Raman spectroscopy revealed that decreased lateral size of the original graphite would lead to increased oxidation degree of GO. Furthermore, the interlayer spacing of the GO samples achieved 0.9-1.0 nm, which indicated that the modified Hummers method could make well oxidized graphite. The corresponding reduced graphite oxide (rGO) was also prepared by low-temperature exfoliation of GO at 140 degrees C under ambient atmosphere. It was found that a larger lateral size of GO resulted in rGO with fewer oxygen-containing functional groups, but a smaller lateral size of graphite possessed a higher exfoliation degree with a larger specific surface area. More importantly, the relationship between binding energy (E-B) of photoelectron of C atom in oxygen-containing groups and the number of oxygen-containing groups in GO and rGO samples was analyzed theoretically.
学科主题	Engineering
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/16898]
专题	2018专题
推荐引用方式 GB/T 7714	Zhang, Lihua,Shen, Lu,Wang, Kui,et al. Analysis of oxidation degree of graphite oxide and chemical structure of corresponding reduced graphite oxide by selecting different-sized original graphite[J]. RSC ADVANCES,2018,8(31):17209-17217.
APA	Zhang, Lihua.,Shen, Lu.,Wang, Kui.,Miao, Lijing.,Lan, Qiaofeng.,...&Zheng, Wenge.(2018).Analysis of oxidation degree of graphite oxide and chemical structure of corresponding reduced graphite oxide by selecting different-sized original graphite.RSC ADVANCES,8(31),17209-17217.
MLA	Zhang, Lihua,et al."Analysis of oxidation degree of graphite oxide and chemical structure of corresponding reduced graphite oxide by selecting different-sized original graphite".RSC ADVANCES 8.31(2018):17209-17217.