Amino-Functionalized Porphyrin-Based
Porous Organic Polymers for CO2 Capture and Hg2+ Removal
Posted on 2020-07-22 - 11:33
Functionalized porous
organic polymers (POPs) with high Brunauer–Emmett–Teller
(BET) surface area (SBET) and unique porosity
are promising for CO2 capture and Hg2+ removal,
although their facile synthesis remains a challenge. Herein, a kind
of novel amino-functionalized porphyrin-based POPs was developed based
on the Friedel–Craft acylation reaction and Schiff-base reaction,
and melamine was adopted as both the rigid cross-linking bridges and
the amino-functionalized agent for the construction of the polymers.
The resultant polymers exhibited high SBET (587 m2/g) and pore volume (0.46 cm3/g) with
abundant amino, imine, and triazine functionalities (42.08 wt %).
The CO2 uptake reached 172 mg/g at 273 K and 1.0 bar and
the maximum Hg2+ capacity reached 328.1 mg/g. In particular,
the characteristic hierarchical micro/mesoporosity of the polymers
was beneficial for the kinetic adsorption due to the fast diffusion
of Hg2+ in the pore channels. This study offers a facile
postfunctionalization strategy to fabricate the functionalized POPs
with high surface area and unique hierarchical porosity.
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Jiangfei, Guo; Lizhi, Wang; Zhang, Du; Huang, Jianhan (2020). Amino-Functionalized Porphyrin-Based
Porous Organic Polymers for CO2 Capture and Hg2+ Removal. ACS Publications. Collection. https://doi.org/10.1021/acs.energyfuels.9b04206