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Author

Joo, Sang Hoon
Nanomaterials & Catalysis Lab
Research Interests
  • Catalyst, energy conversion, fuel cells, electrolyzer, ORR, HER, OER

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Synthesis of highly ordered carbon molecular sieves via template-mediated structural transformation

Cited 1585 times inthomson ciCited 420 times inthomson ci
Title
Synthesis of highly ordered carbon molecular sieves via template-mediated structural transformation
Author
Ryoo, RJoo, Sang HoonJun, S
Issue Date
199909
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY B, v.103, no.37, pp.7743 - 7746
Abstract
Ordered carbon molecular sieves exhibiting Bragg diffraction of X-ray lines have been synthesized for the first time, using mesoporous silica molecular sieves as the template. Sucrose was converted to carbon inside the mesopores of the silica molecular sieves through a mild carbonization process using a sulfuric acid catalyst. The carbon molecular sieves were obtained after the removal of the silica framework using an aqueous solution of sodium hydroxide. The X-ray diffraction, transmission electron microscopy. and pore size analysis showed that the structure of the carbon molecular sieves consisted of a three-dimensional regular array of uniform mesopores 3 nm in diameter. The structure was not simply a negative replica of the used silica template, but the synthesis mechanism involved the unique transformation into a new ordered array that was triggered by the removal of the silica frameworks. The highly ordered mesoporous texture suggested its scientific and technological importance as a new shape-selective catalyst, adsorbent, sensor, and electrode material.
URI
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DOI
http://dx.doi.org/10.1021/jp991673a
ISSN
1520-6106
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