Department of Chemical Engineering, Rowan University, Glassboro, NJ 08028, USA.
Department of Bioengineering, University of California, Riverside, CA 92516, USA.
Molecules. 2021 Mar 31;26(7):1962. doi: 10.3390/molecules26071962.
To address the issue of global warming and climate change issues, recent research efforts have highlighted opportunities for capturing and electrochemically converting carbon dioxide (CO). Despite metal doped polymers receiving widespread attention in this respect, the structures hitherto reported lack in ease of synthesis with scale up feasibility. In this study, a series of mesoporous metal-doped polymers (MRFs) with tunable metal functionality and hierarchical porosity were successfully synthesized using a one-step copolymerization of resorcinol and formaldehyde with Polyethyleneimine (PEI) under solvothermal conditions. The effect of PEI and metal doping concentrations were observed on physical properties and adsorption results. The results confirmed the role of PEI on the mesoporosity of the polymer networks and high surface area in addition to enhanced CO capture capacity. The resulting Cobalt doped material shows excellent thermal stability and promising CO capture performance, with equilibrium adsorption of 2.3 mmol CO/g at 0 °C and 1 bar for at a surface area 675.62 m/g. This mesoporous polymer, with its ease of synthesis is a promising candidate for promising for CO capture and possible subsequent electrochemical conversion.
为了解决全球变暖与气候变化问题，最近的研究工作强调了捕获和电化学转化二氧化碳（CO）的机会。尽管金属掺杂聚合物在这方面受到广泛关注，但迄今报道的结构在合成的简易性和扩大规模的可行性方面存在不足。在这项研究中，通过在溶剂热条件下使用一步共聚反应，成功合成了一系列具有可调金属功能和分级多孔性的介孔金属掺杂聚合物（MRF），共聚单体为间苯二酚和甲醛以及聚乙烯亚胺（PEI）。观察了 PEI 和金属掺杂浓度对物理性能和吸附结果的影响。结果证实了 PEI 在聚合物网络的介孔性和高表面积方面的作用，以及增强的 CO 捕获能力。所得到的钴掺杂材料表现出优异的热稳定性和有前景的 CO 捕获性能，在 0°C 和 1 巴下的平衡吸附量为 2.3mmol CO/g，比表面积为 675.62 m/g。这种介孔聚合物具有易于合成的特点，是 CO 捕获和可能随后的电化学转化的有前途的候选材料。
