文献类型：期刊文献

英文题名：Chemical state of nitrogen in carbon aerogels issued from phenol-melamine-formaldehyde gels

作者：Long, Donghui[1];Zhang, Jie[1];Yang, Junhe[2];Hu, Zijun[3];Cheng, Guo[1];Liu, Ximiao[1];Zhang, Rui[1];Zhan, Liang[1];Qiao, Wenming[1];Ling, Licheng[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, UNILAB, Shanghai 200237, Peoples R China;[2]Shanghai Inst Technol, Shanghai 200235, Peoples R China;[3]Aerosp Inst Mat & Proc Technol, Beijing 100076, Peoples R China

年份：2008

卷号：46

期号：9

起止页码：1259

外文期刊名：CARBON

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000258057000011)】；

语种：英文

摘要：Chemical states of nitrogen in the carbon aerogels synthesized from phenol-melamine-formaldehyde were investigated by elemental analysis, X-ray photoelectron spectroscopy and nitrogen adsorption. It is found that the carbon aerogels are rich in mesopores and the nitrogen content of the carbon aerogels increases from 1.6 to 3.1 wt. % with increasing melamine to phenol ratios. Over two-thirds of nitrogen are on periphery of graphene layers (pyridinic-N, pyrrolic-N and/or pyridonic-N, pyridine N-oxide) and less than one-third in central position of graphene layers (quaternary-N). Polymerisation at low pH might cause a preferred location of nitrogen on periphery of graphene layer. (C) 2008 Elsevier Ltd. All rights reserved.