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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 2
BKCSDE 35(2)
February 20, 2014 

 
Title
Preparation of Micro-/Macroporous Carbons and Their Gas Sorption Properties
Author
Yong-Kyung Hwang, Hye-Seon Shin, Jin-Yeon Hong, Seong Huh*
Keywords
Porous materials, Microporous carbon, Macroporous carbon, Hydrogen adsorption, Carbon dioxide adsorption
Abstract
Micro-/macroporous carbons (MMCs) were prepared using a hollow mesoporous silica capsule (HMSC) as a sacrificial hard template. The carbonization process after the infiltration of furfuryl alcohol into the templatefree HMSC material afforded MMC materials in high yield. The hard template HMSC could be removed by HF etching without deteriorating the structure of MMC. The MMC materials were fully characterized by SEM, TEM, PXRD, XPS, and Raman spectroscopy. The replication processes were so successful that MMCs exhibited a hollow capsular structure with multimodal microporosity. Detailed textural properties of MMC materials were investigated by volumetric N2 adsorption-desorption analysis at 77 K. To explore the gas sorption abilities of MMCs for other gases, H2 and CO2 sorption analyses were also performed at various temperatures. The multimodal MMC materials were found to be good sorbents for both H2 and CO2 at low pressure.
Page
377 - 382
Full Text
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