Hydrophobic mesoporous adsorbent based on cyclic amine-divinylbenzene copolymer for highly efficient siloxane removal

Iman Noshadi, Baishali Kanjilal, Tahereh Jafari, Ehsan Moharreri, Nasser Khakpash, Ting Jiang, Steven L. Suib

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

This paper presents a new class of octamethylcyclotetrasiloxane (D4 siloxane) adsorbent based on the copolymer of divinylbenzene and a novel methacrylate monomer. The novel cyclic amine based methacrylate monomer was synthesized employing click chemistry and was polymerized to form a mesoporous adsorbent under solvothermal conditions and tested for siloxane removal. The D4 adsorption capacity of the novel adsorbent is 2220 mg g-1, which is greater than the adsorption capacities of mesoporous poly(divinylbenzene) and commercial activated charcoal. The adsorbent retains 47% regeneration capacity after 10 usage cycles. The high specific adsorption is due to a combination of physisorption, caused by the mesoporosity and pore volume and chemisorption, as evidenced by spectroscopic results. The incorporation of functional groups into a mesoporous structure with significantly enhanced specific adsorption offers future opportunities towards tailored polymer properties for efficient industrial applications in siloxane removal.

Original languageEnglish (US)
Pages (from-to)77310-77320
Number of pages11
JournalRSC Advances
Volume6
Issue number81
DOIs
StatePublished - 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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