典型文献
Efficient gaseous iodine capture enhanced by charge-induced effect of covalent organic frameworks with dense tertiary-amine nodes
文献摘要：
Based on the outstanding application advantages of nitrogen-rich materials with regular porous frame-works in the capture of gaseous radioactive iodine,a series of covalent organic frameworks(COFs)with dual channels and abundant tertiary-amine active sites were constructed herein via a unique multi-nitrogen node design.The high density of up-to-six nitrogen adsorption sites in a single structural unit of the products effectively improved the adsorption capacities of the materials for iodine.Moreover,the ad-sorption affinity of the active sites can be further regulated by charge-induced effect of different electron-donating groups introduced into the COFs.Adsorption experiments combined with DFT theoretical calcu-lations confirmed that the introduction of electron-donating groups can effectively increase the electron density around the active sites and enhance the binding energy between the materials and iodine,and thus improve the iodine adsorption capacity to 5.54 g/g.The construction strategy of multi-nitrogen node and charge-induced effect proposed in this study provides an important guidance for the study of the structure-activity relationship of functional materials and the design and preparation of high-performance iodine adsorption materials.
文献关键词：
中图分类号：
作者姓名：
Bo Jiang;Yue Qi;Xiaofeng Li;Xinghua Guo;Zhimin Jia;Jie Zhang;Yang Li;Lijian Ma
作者机构：
College of Chemistry,Sichuan University,Chengdu 610064,China
文献出处：
引用格式：
[1]Bo Jiang;Yue Qi;Xiaofeng Li;Xinghua Guo;Zhimin Jia;Jie Zhang;Yang Li;Lijian Ma-.Efficient gaseous iodine capture enhanced by charge-induced effect of covalent organic frameworks with dense tertiary-amine nodes)[J].中国化学快报（英文版）,2022(07):3556-3560
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B类：
Efficient,gaseous,iodine,capture,enhanced,by,charge,induced,covalent,organic,frameworks,dense,tertiary,amine,nodes,Based,outstanding,application,advantages,nitrogen,rich,materials,regular,porous,radioactive,series,COFs,dual,channels,abundant,sites,were,constructed,herein,via,unique,multi,design,high,density,six,adsorption,single,structural,unit,products,effectively,improved,capacities,Moreover,affinity,can,further,regulated,different,electron,donating,groups,introduced,into,Adsorption,experiments,combined,DFT,theoretical,calcu,confirmed,that,introduction,increase,around,binding,energy,between,thus,capacity,construction,strategy,proposed,this,study,provides,important,guidance,structure,activity,relationship,functional,preparation,performance
AB值：
0.510296
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