Preparation of low density and high mesoporosity carbon aerogels by an organic/inorganic hybrid method

	Preparation of low density and high mesoporosity carbon aerogels by an organic/inorganic hybrid method
	Zhou, B; Zhang, R; Guo, QG; Li, ZH; Hu, ZJ; Li, JN; Dong, WS; Li ZH(李志宏)
刊名	NEW CARBON MATERIALS
	2011
卷号	26 期号:2 页码:117-122
关键词	Sol-gel approach Organic aerogels Carbon aerogels Porosity
其他题名	有机/无机杂化制备低密度高中孔率炭气凝胶
通讯作者	[Zhou Bei ; Zhang Rui] Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 200235, Peoples R China ; [Zhou Bei ; Dong Wen-sheng] Shaanxi Normal Univ, Sch Chem & Mat Sci, Xian 710062, Peoples R China ; [Guo Quan-gui] Chinese Acad Sci, Key Lab Carbon Mat, Taiyuan 030001, Peoples R China ; [Li Zhi-hong] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Hu Zi-jun ; Li Jun-ning] Aerosp Inst Mat & Proc Technol, Beijing 100076, Peoples R China
英文摘要	Carbon aerogels were synthesized by the solution-sol-gel polymerization of resorcinol (R) and formaldehyde (F) with silica colloidal nanoparticles as additives in a basic aqueous solution followed by supercritical drying, pyrolysis and HF etching. The R/F molar ratio was maintained at 0.5 and the concentration of R+F in solution was varied. The evolution of porosity from hydrogels to carbon aerogels was investigated by nitrogen adsorption. The effect of R+F concentration and size of the silica colloidal nanoparticles on porosity and mesopore ratios were investigated under the same concentration of silica colloidal nanoparticles at 15 g/100 mL. Results indicated that the volume shrinkage of carbon precursors during supercritical drying and pyrolysis can be reduced by the presence of silica colloidal nanoparticles. The mesopore ratio increased with increasing R+F concentration and porosity decreased with increasing size of the silica colloidal nanoparticles. When the R+F concentration was 20 g/100 mL, the densities of the carbon aerogels were 0.22 and 0.26 g/cm(3) with mesopore ratios of 96 and 98% for 7 and 12 nm silica colloidal nanoparticles respectively.
学科主题	Materials Science
类目[WOS]	Materials Science, Multidisciplinary
研究领域[WOS]	Materials Science
原文出处	SCI
语种	英语
WOS记录号	WOS:000290291000007
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/236824]
专题	高能物理研究所_多学科研究中心高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhou, B,Zhang, R,Guo, QG,et al. Preparation of low density and high mesoporosity carbon aerogels by an organic/inorganic hybrid method[J]. NEW CARBON MATERIALS,2011,26(2):117-122.
APA	Zhou, B.,Zhang, R.,Guo, QG.,Li, ZH.,Hu, ZJ.,...&李志宏.(2011).Preparation of low density and high mesoporosity carbon aerogels by an organic/inorganic hybrid method.NEW CARBON MATERIALS,26(2),117-122.
MLA	Zhou, B,et al."Preparation of low density and high mesoporosity carbon aerogels by an organic/inorganic hybrid method".NEW CARBON MATERIALS 26.2(2011):117-122.