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Architecture of Directed‐Channel Mesoporous Silica/Titania Shell on Bi‐Alkaline‐Earth Carbonate Particles for Core‐Shell Structure
Author(s) -
Chen Xuncai,
Kim Jinsoo,
Jung Taesung,
Park Jongho,
Kim WooSik
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600768
Subject(s) - mesoporous material , shell (structure) , materials science , chemical engineering , bromide , nanotechnology , condensation , mineralogy , inorganic chemistry , chemistry , catalysis , composite material , organic chemistry , physics , engineering , thermodynamics
A generalized, single‐step synthetic method is outlined for the formation of directed‐channel mesoporous SiO 2 or TiO 2 shells on bi‐alkaline‐earth carbonate particles to create a core‐shell structure. Cetyltrimethylammonium bromide (CTAB) is used both as the structure‐directing template for the SiO 2 and TiO 2 shell layer during TEOS and TEOT hydrolysis/condensation and as the mesopore‐channel template in the shell. The resulting core‐shell particles display high properties for the specific surface area and pore volume. In addition, the reaction parameters for the formation of the SiO 2 and TiO 2 shell during the sol‐gel process are broadly investigated. Consequently, this directed mesoporous core‐shell structure can serve as a platform for further surface modifications to facilitate the rapid translation of particles to a wide range of end applications.