Growth mechanism of N-doped graphene materials and their catalytic behavior in the selective oxidation of ethylbenzene

doi:10.1016/S1872-2067(14)60150-9

Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (6): 922-928.DOI: 10.1016/S1872-2067(14)60150-9

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Growth mechanism of N-doped graphene materials and their catalytic behavior in the selective oxidation of ethylbenzene

Pei Tang, Yongjun Gao, Jinghe Yang, Wenjing Li, Huabo Zhao, Ding Ma

Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

Received:2014-05-15 Revised:2014-05-21 Online:2014-05-30 Published:2014-06-03
Supported by:
This work was supported by the National Natural Science Foundation of China (21176221, 21273224) and the National Basic Research Program of China (973 Program, 2011CB201402, 2013CB933100).

Abstract

Abstract:

N-doped graphene materials were prepared from both inorganic and organic nitrogen sources and pyrolytic graphene oxide as the carbon substrate. Transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy were used to investigate the detailed growth mechanism of the N species in these N-doped graphene materials. The different chemical nature and binding energy of the different N species resulted in their different trends with annealing temperature. These N-doped graphene are excellent catalysts in the oxidation of ethylbenzene. A high yield of acetonphenone did not depend on the total nitrogen amount but only on the type of nitrogen species. Too much defects and N-dopants were detrimental to this reaction. A proper activation of the oxidant is needed to get good catalytic activity.

Key words: N-doped graphene, Heteroatom, Growth mechanism, Oxidation of ethylbenzene

Pei Tang, Yongjun Gao, Jinghe Yang, Wenjing Li, Huabo Zhao, Ding Ma. Growth mechanism of N-doped graphene materials and their catalytic behavior in the selective oxidation of ethylbenzene[J]. Chinese Journal of Catalysis, 2014, 35(6): 922-928.

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Growth mechanism of N-doped graphene materials and their catalytic behavior in the selective oxidation of ethylbenzene

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