Rising CO₂ levels in the atmosphere have prompted new research into materials/processes/techniques for CO₂ capture. Herein, we describe a facile preparation method of functional mesoporous polymer nanoparticles bearing quaternary ammonium ions and hydroxide counter ions with high pore volume and surface area. The as-synthesized materials were employed as a highly efficient material for CO₂ capture. Copolymerization of methyl methacrylate and 4-vinylbenzyl chloride via surface confined atom transfer radical polymerization (SC-ATRP) from the bromofunctionalized mesoporous silica nanoparticles led to the synthesis of a mesoporous silica/polymer hybrid. A detailed kinetic investigation established the controlled nature of polymerization. Elimination of the silica template led to the production of −CH₂Cl-functionalized mesoporous polymer nanoparticles, which were subsequently converted to −CH₂NMe₃⁺OH^–-functionalized mesoporous polymer nanoparticles, appropriate for CO₂ capture investigation. Depending on the amount of −CH₂NMe₃⁺OH^– functionality, the CO₂ absorption capability can be tuned.

中文翻译：

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用于二氧化碳捕获的功能性介孔聚合物纳米球的简便制造

大气中不断上升的 CO ₂水平促使人们对捕获CO ₂的材料/工艺/技术进行新的研究。在此，我们描述了一种具有高孔体积和表面积的带有季铵离子和氢氧根抗衡离子的功能性介孔聚合物纳米粒子的简便制备方法。所合成的材料被用作 CO _{2的高效材料}捕获。甲基丙烯酸甲酯和 4-乙烯基苄基氯通过表面受限原子转移自由基聚合 (SC-ATRP) 从溴官能化的介孔二氧化硅纳米粒子进行共聚，从而合成介孔二氧化硅/聚合物杂化物。详细的动力学研究确定了聚合的受控性质。二氧化硅模板的消除导致产生-CH ₂ Cl-官能化介孔聚合物纳米粒子，随后将其转化为-CH ₂ NMe ₃ ⁺ OH ^-官能化介孔聚合物纳米粒子，适用于CO ₂捕获研究。取决于-CH ₂ NMe ₃ ^+的量OH ^-功能，CO ₂吸收能力可以调整。