Issue 1, 2021

A superhydrophobic and porous polymer adsorbent with large surface area

Abstract

A superhydrophobic hypercrosslinked microporous polymer adsorbent, SHMP-1, with a water contact angle of 167° and an oil contact angle < 3°, was synthesized. SHMP-1 has a specific surface area of up to 2100 m2 g−1, higher than the largest one (i.e. 1618 m2 g−1) reported for superhydrophobic materials. It is an amorphous polymer with a highly cross-linked structure of monomers linked by methylene, and consists of packed amorphous porous cells with pore channel widths of 5–19 Å. SHMP-1 can be stable up to 380 °C, and in organic solvents (e.g. ethanol, acetone, carbon tetrachloride, tetrahydrofuran and n-hexane), HCl (5 mol L−1) and NaOH (5 mol L−1) solution. This polymer could be a promising adsorbent for absorption of organic solvents with capacities ranging from 4–25 times its own weight and capturing CO2 with an adsorption capacity of up to 6.02 mmol g−1 (273 K, 1 bar). Moreover, the CO2 adsorption capacity of SHMP-1 will not be decreased significantly (loss < 2.03%) by moisture even at a relative humidity of up to 90%, because of the surface superhydrophobicity.

Graphical abstract: A superhydrophobic and porous polymer adsorbent with large surface area

Supplementary files

Article information

Article type
Communication
Submitted
13 Aug 2020
Accepted
22 Nov 2020
First published
23 Nov 2020

J. Mater. Chem. A, 2021,9, 254-258

A superhydrophobic and porous polymer adsorbent with large surface area

L. Gong, W. Wu, D. Lin and K. Yang, J. Mater. Chem. A, 2021, 9, 254 DOI: 10.1039/D0TA07944H

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