Synthesis and characterization of cubic periodic mesoporous organosilicas with a high loading of disulfide groups

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题名:	Synthesis and characterization of cubic periodic mesoporous organosilicas with a high loading of disulfide groups
作者:	Chiu,PJ;Vetrivel,S;Chiang,AST;Kao,HM
贡献者:	化學學系
关键词:	FUNCTIONALIZED SBA-15;MESOSTRUCTURED SILICA;PORE STRUCTURE;THIOL;ADSORPTION;CAPACITY;MERCURY(II);ADSORBENTS;ACID;REMEDIATION
日期:	2011
上传时间:	2012-03-27 18:13:13 (UTC+8)
出版者:	國立中央大學
摘要:	Well ordered cubic periodic mesoporous organosilicas (PMOs) with the SBA-1 motif containing a high loading of disulfide groups have been synthesized by simple co-condensation of bis[3-(triethoxysilyl) propyl] disulfide (BTEPDS) and tetraethoxysilane (TEOS) using the cationic surfactant cetyltriethylammonium bromide (CTEABr) as the template under acidic conditions. The materials thus obtained exhibited ordered and uniform mesopores up to 50 mol% of BTEPDS (based on silica) in the initial mixture. The successful incorporation of disulfide groups into the ordered mesopores was confirmed by (29)Si and (13)C solid-state NMR spectroscopy. These disulfide-functionalized PMO materials showed good adsorption efficiency for Hg(2+) ions. The successful conversion of the disulfide moiety to sulfonic acid functionality was also demonstrated by a simple post-oxidation method using hydrogen peroxide.
關聯:	NEW JOURNAL OF CHEMISTRY
显示于类别:	[化學學系] 期刊論文

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