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

Po Jui Chiu, Shanmugam Vetrivel, Anthony S.T. Chiang, Hsien Ming Kao

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

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 29Si and 13C solid-state NMR spectroscopy. These disulfide-functionalized PMO materials showed good adsorption efficiency for Hg2+ ions. The successful conversion of the disulfide moiety to sulfonic acid functionality was also demonstrated by a simple post-oxidation method using hydrogen peroxide.

Original languageEnglish
Pages (from-to)489-494
Number of pages6
JournalNew Journal of Chemistry
Volume35
Issue number2
DOIs
StatePublished - Feb 2011

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