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X-ray absorption spectroscopy study on the thermal and hydrazine reduction of graphene oxide
Liang, XQ; Wang, Y; Zheng, HY; Wu, ZY; lxq@gxu.edu.cn; wuzy@ustc.edu.cn
2014
Source PublicationJOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
ISSN0368-2048
Volume196Pages:89—93
AbstractX-ray absorption spectroscopy (XAS) was applied to systemically investigate the deoxygenation of graphene oxide (GO) via annealing and hydrazine treatment. Detailed evolution of the electronic structures and chemical bonding of GO was presented. The enhanced intensity of pi* resonance and the appearance of splitting sigma* resonance in C K-edge XAS spectra suggest high extents of recoveries of pi-conjugation upon reduction using thermal annealing or hydrazine. Experimental results revealed that the carboxyl as well as epoxide and hydroxyl groups on the surface of GO were thermally reduced first, followed by the more difficult removal of carbonyl and cyclic ether groups at higher temperatures. The hydrazine reduction could remove epoxide, hydroxyl and carboxyl groups effectively, whereas the carbonyl groups were partially reduced with the incorporation of nitrogen species simultaneously. The residual oxygen functional groups on hydrazine-reduced GO could be further removed after modest thermal annealing. It was proposed that a combination of both types of reductions would give the best deoxygenation efficiency for the production of graphene. (C) 2013 Elsevier B.V. All rights reserved.
KeywordGraphite Oxide Films
Indexed BySCI
Language英语
WOS IDWOS:000345823400019
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14562
Collection中科院上海应用物理研究所2011-2020年
Corresponding Authorlxq@gxu.edu.cn; wuzy@ustc.edu.cn
Recommended Citation
GB/T 7714
Liang, XQ,Wang, Y,Zheng, HY,et al. X-ray absorption spectroscopy study on the thermal and hydrazine reduction of graphene oxide[J]. JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA,2014,196:89—93.
APA Liang, XQ,Wang, Y,Zheng, HY,Wu, ZY,lxq@gxu.edu.cn,&wuzy@ustc.edu.cn.(2014).X-ray absorption spectroscopy study on the thermal and hydrazine reduction of graphene oxide.JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA,196,89—93.
MLA Liang, XQ,et al."X-ray absorption spectroscopy study on the thermal and hydrazine reduction of graphene oxide".JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA 196(2014):89—93.
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