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Diatom‐Templated Synthesis of Ordered Meso/Macroporous Hierarchical Materials
Author(s) -
Cai Xiaohui,
Zhu Guangshan,
Zhang Weiwei,
Zhao Huanyu,
Wang Ce,
Qiu Shilun,
Wei Yen
Publication year - 2006
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200600339
Subject(s) - diatom , mesoporous silica , mesoporous material , copolymer , chemistry , chemical engineering , carbon fibers , transmission electron microscopy , template , nanotechnology , materials science , organic chemistry , composite number , catalysis , composite material , geology , oceanography , polymer , engineering
Ordered meso/macroporous hierarchical silica materials have been prepared using block copolymer P123 (EO 20 PO 70 EO 20 ) and an inverse carbon replica of diatom as templates. The silica wall of the diatom was replaced by ordered mesoporous silica, while the micron‐sized diatom architecture was replicated by using an inverse carbon replication technique. The mesoporous silica was found to have macroporous structures of both columnar and discoid diatom templates. The presence of hierarchical meso/macroporous systems was confirmed by the results from scanning and transmission electron microscopy, powder X‐ray diffraction, and nitrogen adsorption–desorption studies. The materials with columnar and discoid morphologies have BET surface areas of about 400 m 2 g –1 . (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)