Solvent‐Free Self‐Assembly to the Synthesis of Nitrogen‐Doped Ordered Mesoporous Polymers for Highly Selective Capture and Conversion of CO₂

Abstract

A solvent-free induced self-assembly technology for the synthesis of nitrogen-doped ordered mesoporous polymers (N-OMPs) is developed, which is realized by mixing polymer precursors with block copolymer templates, curing at 140-180 °C, and calcination to remove the templates. This synthetic strategy represents a significant advancement in the preparation of functional porous polymers through a fast and scalable yet environmentally friendly route, since no solvents or catalysts are used. The synthesized N-OMPs and their derived catalysts are found to exhibit competitive CO capacities (0.67-0.91 mmol g at 25 °C and 0.15 bar), extraordinary CO /N selectivities (98-205 at 25 °C), and excellent activities for catalyzing conversion of CO into cyclic carbonate (conversion >95% at 100 °C and 1.2 MPa for 1.5 h). The solvent-free technology developed in this work can also be extended to the synthesis of N-OMP/SiO nanocomposites, mesoporous SiO , crystalline mesoporous TiO , and TiPO, demonstrating its wide applicability in porous material synthesis.

Guanine-Derived Nitrogen-Doped Ordered Mesoporous Carbons for Lithium-Ion Battery Anodes

“…In general, three strategies have been used for the preparation of nitrogen‐doped mesoporous carbon, including the soft template,, the hard template, and the activation method . Although the soft template method avoids the use of chemical reagents for removing template, the introduction of nitrogen source would results in deterioration of the ordered mesostructure and reduction of specific surface area .…”

Porous Carbon Nitride Frameworks Derived from Covalent Triazine Framework Anchored Ag Nanoparticles for Catalytic CO2 Conversion

“…Owing to their high nitrogen content and unique surface properties, nitrogen‐doped carbon materials (CNs) have been investigated extensively in gas capture, catalysis, and supercapacitors . In particular, porous CNs are attractive because of their high specific surface areas and large pore volumes; however, they are rarely reported in the field of CO 2 conversion.…”

“…Ta king accounto ft he problems of practical utility and catalyst recycling in homogeneous catalytic systems, heterogeneous catalysts are more attractive for CO 2 conversion. [5] Owing to their high nitrogen content and unique surface properties, nitrogen-doped carbon materials( CNs) have been investigated extensively in gas capture, [6] catalysis, [7] and supercapacitors. [8] In particular,p orousC Ns are attractive because of their high specific surfacea reas and large pore volumes;h owever,t hey are rarely reportedi nt he field of CO 2 conversion.…”

Metal‐containing Ionic Liquid/Polyacrylonitrile‐derived Carbon Nanofibers for Oxygen Reduction Reaction and Flexible Zn–Air Battery

“…According to IUPAC classification, IL‐Fe‐PAN‐900‐0.25, IL‐Fe‐PAN‐900‐0.50, IL‐Fe‐PAN‐900‐0.75 and IL‐Fe‐PAN‐800‐0.75 all present a type‐I sorption isotherm, revealing the main existence of microporous structure . Furthermore, IL‐Fe‐PAN‐1000‐0.75 differently exhibits a hysteresis loop at the relative pressure of 0.48–1.0, indicating a type‐IV sorption isotherm and the presence of micropores and mesopores . Pore‐size distribution curves (on basis of density functional theory) of IL‐Fe‐PAN‐T‐ns in Figure d further prove these analysis.…”