UiO-66-NH2 is an efficient material for remo-ving pollutants from wastewater due to its high specific surface area,high porosity and water stability.However,recycling them from wastewater is difficult.In this study,the cellulose nanofibers mat deacetylated from cellulose acetate nanofibers were used to combine with UiO-66-NH2 by the method of in-situ growth to remove the toxic dye,rose bengal.Compared to previous work,the prepared composite could not only provide ease of separation of UiO-66-NH2 from the water after adsorption but also demonstrate better adsorption capacity(683 mg-g1(T=25℃,pH=3))than that of the simple UiO-66-NH2(309.6 mg·g-1(T=25℃,pH=3)).Through the analysis of adsorption kinetics and isotherms,the adsorption for rose bengal is mainly suitable for the pseudo-second-order kinetic model and Freundlich model.Furthermore,the relevant research revealed that the main adsorption mecha-nism of the composite was electrostatic interaction,hydro-gen bonding and π-π interaction.Overall,the approach depicts an efficient model for integrating metal-organic frameworks on cellulose nanofibers to improve metal-organic framework recovery performance with potentially broad applications.

Yuyao Han;Lei Xia;Xupin Zhuang;Yuxia Liang

State Key Laboratory of Separation Membranes and Membrane Processes,National Center for International Joint Research on Separation Membranes,Tiangong University,Tianjin 300387,China;School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;School of Mathematical Sciences,Tianjin Normal University,Tianjin 300387,China

化学科学与工程前沿

[1]Yuyao Han;Lei Xia;Xupin Zhuang;Yuxia Liang-.Integrating of metal-organic framework UiO-66-NH2 and cellulose nanofibers mat for high-performance adsorption of dye rose bengal)[J].化学科学与工程前沿,2022(09):1387-1398

Integrating,metal,organic,UiO,NH2,cellulose,nanofibers,high,performance,adsorption,dye,rose,bengal,efficient,material,ving,pollutants,from,wastewater,due,its,specific,surface,area,porosity,stability,However,recycling,them,difficult,this,study,deacetylated,acetate,were,used,combine,by,method,situ,growth,remove,toxic,Compared,previous,prepared,composite,could,not,only,provide,ease,separation,after,but,also,demonstrate,better,capacity,g1,than,that,simple,Through,analysis,kinetics,isotherms,mainly,suitable,pseudo,second,order,model,Freundlich,Furthermore,relevant,research,revealed,mecha,nism,electrostatic,interaction,hydro,gen,bonding,Overall,approach,depicts,integrating,frameworks,improve,recovery,potentially,broad,applications

0.545542