With the relentless expansion of human economic activities,a substantial increase in CO_(2)emissions has been observed,primarily stemming from the rampant combustion of fossil fuels.This relentless surge has undeniabl...With the relentless expansion of human economic activities,a substantial increase in CO_(2)emissions has been observed,primarily stemming from the rampant combustion of fossil fuels.This relentless surge has undeniably exacerbated global warming and climate change,necessitating urgent measures to mitigate greenhouse gas emissions[1].The conventional CO_(2)separation technologies required the addition of amine-based absorbents,while their applications were limited by the strong corrosivity,toxic volatiles and by-products,and energy-consuming regeneration process.Recent advancements in membrane technology,including polymer thin film composites,metal-organic frameworks,and stacked nanosheets,have exhibited promising CO_(2)/N_(2)separation performances[2,3].However,the challenge of balancing high selectivity with high permeance remains,due to the inherent limitation of reducing thickness of the selective layer below 50–100 nm without introducing detrimental defects.Porous single-layer graphene,with its atomically thin pores,emerges as a promising two-dimensional(2D)material that minimizes diffusion resistance for molecular transport[4].Nevertheless,balancing high selectivity with high permeance has remained a formidable challenge.展开更多
基金supported by the National Natural Science Foundation of China(22122602,22376071,22161142005)the Foundation of State Key Laboratory of Coal Combustion,China.
文摘With the relentless expansion of human economic activities,a substantial increase in CO_(2)emissions has been observed,primarily stemming from the rampant combustion of fossil fuels.This relentless surge has undeniably exacerbated global warming and climate change,necessitating urgent measures to mitigate greenhouse gas emissions[1].The conventional CO_(2)separation technologies required the addition of amine-based absorbents,while their applications were limited by the strong corrosivity,toxic volatiles and by-products,and energy-consuming regeneration process.Recent advancements in membrane technology,including polymer thin film composites,metal-organic frameworks,and stacked nanosheets,have exhibited promising CO_(2)/N_(2)separation performances[2,3].However,the challenge of balancing high selectivity with high permeance remains,due to the inherent limitation of reducing thickness of the selective layer below 50–100 nm without introducing detrimental defects.Porous single-layer graphene,with its atomically thin pores,emerges as a promising two-dimensional(2D)material that minimizes diffusion resistance for molecular transport[4].Nevertheless,balancing high selectivity with high permeance has remained a formidable challenge.
