Synthesis and CO₂ Capture Behavior of Porous Cross-Linked Polymers Containing Pendant Triazole Groups

Abstract

Porous cross-linked polymers containing pendant triazole groups were synthesized from glycidyl methacrylate (GMA) in the presence of divinylbenzene via high internal phase emulsion (HIPE) templating method followed by functionalization with sodium 3-amino-1,2,4-triazole (ATANa). They were characterized with FTIR, SEM, BET, and mercury intrusion and assessed as CO 2 adsorbents. With interconnected hierarchical porous structure and abundant triazole groups which absorbed CO 2 chemically in 1:1 stoichiometry, the adsorbents exhibited high CO 2 adsorption capacity (3.6 mmol g −1 , at 25 °C and 1 atm) and rate, and good CO 2 /N 2 selectivity (∼30). The adsorbents also displayed easy CO 2 desorption with medium desorption heat (58 kJ/mol CO 2 ), acceptable moisture endurance, and excellent recyclability. The results suggest that these functionalized porous polymers are potential adsorbents for CO 2 capture.

Development of Adsorbents for Selective Carbon Capture: Role of Homo- and Cross-Coupling in Conjugated Microporous Polymers and Their Carbonized Derivatives

“…The obtained CO 2 capture capacity is obviously higher than those of recently reported adsorbents such as S3-MIPs (1.0 mmol·g –1 ), PVIm- n -SCD (3.6 mmol·g –1 ), HIP-Cl-1 (3.8 mmol·g –1 ), NPCM-1-700 (3.9 mmol·g –1 ), NT-POP-@800-4 (4.0 mmol·g –1 ), BILP-1 (4.3 mmol·g –1 ), PC-700 (4.7 mmol·g –1 ) (273 K, 1 bar) and S3-MIPs (0.6 mmol·g –1 ), HIP-Cl-1 (2.3 mmol·g –1 ), BILP-1 (3.0 mmol·g –1 ), PC-700 (3.0 mmol·g –1 ) KOH/PPy-700-2 (3.1 mmol·g –1 ), (298 K, 1 bar). In addition, PC-800 (5.4 mmol·g –1 ) displayed comparable CO 2 uptake to those of benchmarks like activated carbon (2.8 mmol·g –1 ), PTz4 (3.6 mmol·g –1 ), UTSA-50a (4.6 mmol·g –1 ), RN-400-4 (4.8 mmol·g –1 ), C-650-3 (5.0 mmol·g –1 ), and GC-650-4 (5.7 mmol·g –1 ) . Further, a comparison of CO 2 uptake of PCs with recently reported adsorbents is tabulated in Table S1.…”

Precise fabrication of porous polymer frameworks using rigid polyisocyanides as building blocks: from structural regulation to efficient iodine capture

“…Because of the large pore size, surface areas of the polymers with long polyisocyanide backbones such as C-poly-1 50 , C-poly-1 80 , and C-poly-1 100 are relatively low. 56 It is worthy of note that BET analysis of the uncrosslinked 4-poly-1 5 suggests it has no porous structure (Fig. S18, ESI † ).…”

Triazole-Functionalized Mesoporous Materials Based on Poly(styrene-block-lactic acid): A Morphology Study of Thin Films

“…In principle, this feature would allow the membrane to capture such metallic species through a coordination bond between triazole rings and cations. This type of membrane is used for numerous applications, such as water purification [ 17 ], antifungal and antimicrobial agents [ 18 , 19 ], CO 2 adsorption [ 20 ], drug encapsulation and release [ 21 ], etc.…”