PDMS-coated hypercrosslinked porous organic polymers modified via double postsynthetic acidifications for ammonia capture

Dong Won Kang, Minjung Kang, Minkyu Moon, Hyojin Kim, Sunhwi Eom, Jong Hyeak Choe, Woo Ram Lee, Chang Seop Hong

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A hypercrosslinked porous organic polymer was modified by post-oxidation and post-sulfonation to obtain a porous platform with a high density of acidic groups. Such an acidified material exhibits record high NH3 adsorption capacity per surface area, fast adsorption rate, and recyclability at low desorption temperature. Noticeably, the coating of the polymer with PDMS represents a facile and efficient route to enable both a significant improvement of low-pressure NH3 adsorption capacity (∼40-fold enhancement; from 0.04 to 1.41 mmol g−1) with respect to the non-modified polymer at 500 ppm and hydrophobicity associated with the selective sorption of NH3 over water vapor (hydrophilic for the non-coated material). This material is easy to prepare, cost-effective, and scalable to mass production.

Original languageEnglish
Pages (from-to)6871-6877
Number of pages7
JournalChemical Science
Volume9
Issue number33
DOIs
Publication statusPublished - 2018

ASJC Scopus subject areas

  • Chemistry(all)

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