Ultrasonic mediated synthesis of hexagonal benzene-bridged periodic mesoporous organosilicas

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題名:	Ultrasonic mediated synthesis of hexagonal benzene-bridged periodic mesoporous organosilicas
作者:	高憲明;Sung, Tsai-Lung;Pan, Yu-Chi;Kumaresan, Loganathan;Vetrivel, Shanmugam;Kao, Hsien-Ming
貢獻者:	理學院化學學系
關鍵詞:	Chemistry;Colloidal state and disperse state;Exact sciences and technology;General and physical chemistry;Periodic mesoporous organosilicas;Porous materials;Solid-state NMR;Ultrasonic irradiation
日期:	2012-05-01
上傳時間:	2026-04-21 13:55:36 (UTC+8)
出版者:	Elsevier;San Diego, CA: Elsevier Inc
摘要:	摘要： A rapid synthesis route to synthesize highly ordered benzene-bridged periodic mesoporous organosilicas (PMOs) with the hexagonal mesostructures in a short time of 4h via the aid of ultrasonic irradiation is reported. [Display omitted] ► A ultrasonic mediated route to periodic mesoporous benzenesilicas is reported. ► The total synthesis time is significantly reduced from days to a few hours. ► 13C NMR reveals subtle changes in the overall arrangements of the phenylene rings. A rapid synthesis route to synthesize highly ordered benzene-bridged periodic mesoporous organosilicas (PMOs) with the hexagonal mesostructures in a short time via the aid of ultrasonic irradiation is reported. By varying the time periods for the ultrasonic irradiation and hydrothermal treatment, the structural and textural properties of the resultant materials can be finely tuned. The resultant materials exhibited well ordered hexagonal mesostrucutres with surface areas in the range of 653–1097m2/g, pore volumes of 0.52–1.26cm3/g, and pore diameters in the range of 3.9–6.4nm, which are comparable to the conventional analogs. Different synthesis procedures, namely ultrasonic irradiation and hydrothermal treatment, have significant influence on the particle morphology and the change in morphology was evident from SEM analysis. It is of great interest that 13C solid-state NMR can reveal subtle changes in the overall arrangements of the carbon atoms in the phenylene rings embedded in the silica framework due to different synthesis procedures by simulating the 13C NMR spinning sideband manifolds. This study shows that the ultrasonic mediated synthesis route is an easy and effective way not only to significantly reduce the total synthesis time of PMOs from days to a few hours, but also to easily screen a wide range of synthesis conditions in order to optimize and scale-up their production. 出版者： San Diego, CA: Elsevier Inc 出版日期： 2012-05-01 出處： Microporous and mesoporous materials, 2012-05, Vol.153, p.79-87 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2011 Elsevier Inc. 版權： 2015 INIST-CNRS 識別號： ISSN: 1387-1811 識別號： EISSN: 1873-3093 識別號： DOI: 10.1016/j.micromeso.2011.12.028
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