典型文献
Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO2 capture
文献摘要:
Amines in porous materials have been employed as active species for the selective CO2 adsorption from natural gas because of their target-specific interactions.Nevertheless,it is difficult to modulate such strong interactions to reach a high efficiency in the adsorption processes.Herein,we fabricated light-responsive adsorbents with tunable adsorbent-adsorbate interactions for CO2 capture.The adsorbents were synthesized by introducing primary and secondary amines into a mesoporous silica that had been grafted with azobenzene groups on the surfaces.The target-specific amine sites render the adsorbents significantly selective in the uptake of CO2 over CH4,and the azobenzene groups were used as light-responsive switches to influence the adsorbent-adsorbate interactions.The adsorbents can freely adsorb CO2 when the azobenzene groups are in the trans state.Ultraviolet-light irradiation makes the azoben-zene groups transform to the cis configuration,which greatly hinders amines in the uptake of CO2.The caused difference of adsorption capacity can reach 34.9%.The alternative irradiation by ultraviolet-and visible-light can lead to a recyclable regulation on adsorption performance.The changes of the elec-trostatic potentials of amines are responsible for the light-induced regulation on adsorption.
文献关键词:
中图分类号:
作者姓名:
Peng Tan;Yao Jiang;Qiurong Wu;Chen Gu;Shichao Qi;Qiang Zhang;Xiaoqin Liu;Linbing Sun
作者机构:
State Key Laboratory of Materials-Oriented Chemical Engineering,Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM),College of Chemical Engineering,Nanjing Tech University,Nanjing 211816,China;Department of Chemistry,Washington State University,Pullman,WA 99163,United States
文献出处:
引用格式:
[1]Peng Tan;Yao Jiang;Qiurong Wu;Chen Gu;Shichao Qi;Qiang Zhang;Xiaoqin Liu;Linbing Sun-.Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO2 capture)[J].中国化学工程学报(英文版),2022(02):104-111
A类:
Amines,azoben,zene
B类:
Light,responsive,adsorbents,tunable,adsorbate,interactions,selective,capture,materials,have,been,employed,active,species,adsorption,from,natural,gas,because,their,target,specific,Nevertheless,difficult,modulate,such,strong,reach,high,efficiency,processes,Herein,fabricated,light,were,synthesized,by,introducing,primary,secondary,amines,into,mesoporous,silica,that,had,grafted,azobenzene,groups,surfaces,sites,render,significantly,uptake,over,CH4,switches,influence,freely,when,are,state,Ultraviolet,irradiation,makes,transform,cis,configuration,which,greatly,hinders,caused,difference,capacity,alternative,ultraviolet,visible,lead,recyclable,regulation,performance,changes,trostatic,potentials,responsible,induced
AB值:
0.477761
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