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Pore Size Controllable Preparation for Low Density Porous Nano-Carbon
Feng, Yaning1; Wang, Juanjuan1; Ge, Liling1; Jiang, Bailing1; Miao, Lei2; Tanemura, Masaki3
AbstractCarbon aerogels has particular application in many fields for its nano-sized porous structure. To improve the pore size controllability in the fabrication of carbon aerogels, strategy through increase the formaldehyde concentration to enhance the structural stability of organic resorcinol-formaldehyde (RF) aerogel was proposed in this paper. The RF starting resolution was catalyzed by sodium carbonate in distilled water. The ratio of resorcinol to formaldehyde (R/F ratio) was adjusted from 1/2, 1/1.5, 1/2, 1/2.5 to 1/3. The RF aerogols was derived from wet gel through supercritical drying, and they were carbonized to prepare carbon aerogels. Nano-structural property of the RF aerogels was analyzed by the shrinkage and density. The pore size was discussed by the measurement results of nitrogen gas adsorption. Experimental results show that with an increasing in the concentration of formaldehyde in the starting solution, the structural stability of the RF aerogels increases. It was proved that both the shrinkages and densities of the dried RF aerogels are decreased simultaneously, and that the pore size distribution curves of the RF aerogels are increased steeply through a high concentration of formaldehyde. Therefore, it is tested that the pore size controllability of carbon aerogels is increased with an enhancement in the stability of their RF aerogel precursor.
KeywordPore Size Controllability Carbon Aerogels R/f Ratio Stability
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS Subject ExtendedChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
Indexed BySCI
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000328704000075
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Document Type期刊论文
Affiliation1.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
3.Nagoya Inst Technol, Grad Sch Engn, Dept Frontier Mat, Nagoya, Aichi 4668555, Japan
Recommended Citation
GB/T 7714
Feng, Yaning,Wang, Juanjuan,Ge, Liling,et al. Pore Size Controllable Preparation for Low Density Porous Nano-Carbon[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2013,13(10):7012-7015.
APA Feng, Yaning,Wang, Juanjuan,Ge, Liling,Jiang, Bailing,Miao, Lei,&Tanemura, Masaki.(2013).Pore Size Controllable Preparation for Low Density Porous Nano-Carbon.JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,13(10),7012-7015.
MLA Feng, Yaning,et al."Pore Size Controllable Preparation for Low Density Porous Nano-Carbon".JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 13.10(2013):7012-7015.
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