Rapid sonochemical synthesis of MCM-41 type benzene-bridged periodic mesoporous organosilicas

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101027

Title:	Rapid sonochemical synthesis of MCM-41 type benzene-bridged periodic mesoporous organosilicas
Authors:	高憲明;Deka, Juti Rani;Vetrivel, Shanmugam;Wu, Hao-Yiang;Pan, Yu-Chi;Ting, Chun-Chiang;Tsai, Yu-Lin;Kao, Hsien-Ming
Contributors:	理學院化學學系
Keywords:	Chemistry;Colloidal state and disperse state;Exact sciences and technology;General and physical chemistry;MCM-41;Periodic mesoporous organosilicas;Physical chemistry of induced reactions (with radiations, particles and ultrasonics);Porous materials;Solid-state NMR;Ultrasonic chemistry;Ultrasonic irradiation
Date:	2014-01-01
Issue Date:	2026-04-21 14:21:35 (UTC+8)
Publisher:	Elsevier;Kidlington: Elsevier B.V
Abstract:	摘要： •Rapid sonochemical synthesis of highly ordered bridged benzene PMOs is reported.•Ultrasonic irradiation can reduce the PMO synthesis time from days to few minutes.•2D 29Si{1H} HETCOR NMR reveals the formation of a single PMO mesophase. Benzene-bridged periodic mesoporous organosilicas (PMOs) with the MCM-41 were synthesized by a rapid sonochemical process via co-condensation of tetraethoxysilane (TEOS) and 1,4-bis(triethoxysilyl) benzene (BTEB) under basic conditions within a few minutes using cetyltrimethylammoniumbromide (CTMABr) as a structure-directing agent. The molar ratio of the silicon precursors and the synthesis time were varied in order to investigate their influence on the structural ordering of the materials. The characteristics of the materials were evaluated by X-ray diffraction (XRD), N2-sorption, transmission electron microscopy (TEM) and solid-state NMR spectroscopy. The resultant materials exhibited well-ordered hexagonal mesostructures with surface areas in the range of 602–1237m2/g, pore volumes of 0.37–0.68cm3/g, and pore diameters in the range of 2.5–3.5nm. Two dimensional 29Si{1H} heteronuclear correlation (HETCOR) NMR spectra confirmed the formation of a single mesophase with various Q (from TEOS) and T (from BTEB) silicon species located randomly within the pore walls due to the co-condensation of BTEB and TEOS, which excluded the possibility of formation of island or two separate phases within such a short synthesis time. The prime advantage of the present synthesis route is that it can effectively reduce the total synthesis time from days to a few minutes, much shorter than the conventional benzene-bridged PMOs synthesis methods. 其他題名： Ultrason Sonochem 出版者： Kidlington: Elsevier B.V 出版日期： 2014-01 出處： Ultrasonics sonochemistry, 2014-01, Vol.21 (1), p.387-394 版權： 2013 Elsevier B.V. 版權： 2014 INIST-CNRS 版權： Copyright © 2013 Elsevier B.V. All rights reserved. 識別號： ISSN: 1350-4177 識別號： ISSN: 1873-2828 識別號： EISSN: 1873-2828 識別號： DOI: 10.1016/j.ultsonch.2013.06.014 識別號： PMID: 23835400
Appears in Collections:	[Department of Chemistry] journal & Dissertation

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