关键词: 矿井环境净化　 整体吸附剂　 分级多孔结构　 耐高温高湿　 协同捕获 

Abstract: The coal-mine-dominated energy structure and intensive mining operations inevitably result in co-source emissions of harmful particulate matter (PM) and greenhouse gases (CO2 ),posing severe threats to the climatic environment and the safety of miners′ lives. Traditional porous adsorbents have attracted significant attention in the field of synergistic capture of harmful particulates and gases,owing to their advantages such as facile operation,low adsorption heat,and easy regenerability. However,the inherent “ trade-off” effect between adsorption capacity and mass transfer resistance,coupled with the low gas permeability of powdered adsorbents after processing and shaping,severely restricts their industrial application scope and prospects. In this study,a “ bottom-up” strategy was employed to achieve efficient carbon-carbon covalent bonding between fluorene-based functional building blocks and 1,3,5-triethynylbenzene structural units via cross-coupling reactions,enabling the one-pot synthesis of monolithic conjugated microporous polymer adsorbents (D-CMPs) with uniform pore structures,flexible processability,and environmental tolerance. D-CMPs,featuring rigid aromatic π-conjugated backbones,exhibit excellent structural and functional stability under prolonged high-humidity conditions,with capture efficiencies exceeding 99. 79% for PM0. 3 and 99. 98% for PM2. 5 . Furthermore,the “slip effect” induced by the open 3D hierarchical porous structure of D-CMPs significantly enhances gas flow dispersion and improves gas throughput (with a minimum permeation resistance of only 17 Pa). Benefiting from their continuous and uniform hierarchical porosity and the full exposure of fluorene-based functional sites,D-CMPs demonstrate favorable CO2 adsorption and sequestration performance. At a pressure of 1. 0×10 5 Pa and a temperature of 273. 15 K,the CO2 adsorption capacity reaches as high as 2. 59 mmol / g. Prior to the widespread adoption of low-carbon and clean energy technologies,porous solid materials with excellent structural stability,tunable porosity,environmental tolerance,and high adsorption capacity will emerge as promising candidates for the purification of mine operation environments. 

Key words: mine environment purification,monolithic adsorbent,hierarchical porous structure,high temperature and humidity resistance,cooperative capture