典型文献
Synthesis of a highly recoverable 3D MnO2/rGO hybrid aerogel for efficient adsorptive separation of pharmaceutical residue
文献摘要：
Water contamination by non-steroidal anti-inflammatory drugs,such as acetaminophen,is an emerging ecological concern.In this study,a new three-dimensional manganese dioxide-engrafted reduced graphene oxide(3D MnO2/rGO)hybrid aerogel was developed for ac-etaminophen sequestration.The synthesis involved firstly the self-assembly of GO aero-gel,followed by thermal reduction and in-situ MnO2 growth by redox-reaction.The aerogel demonstrated interlinked planes with smooth surfaces deposited with MnO2 nanospheres and pores of 138.4-235.3 μm width.The influences of adsorbent dosage,initial pH,ac-etaminophen concentration,temperature and contact time were investigated.It was deter-mined that the adsorption of acetaminophen occurred on uniform sorption sites in the aero-gel,as suggested by the best fit of data to the Langmuir isotherm,yielding a maximum ad-sorption capacity of 252.87 mg/g.This highest adsorption performance of the 3D MnO2/rGO aerogel was attained at a dosage of 0.6 g/L,initial pH of 6.2 and temperature of 40℃.The process kinetics were in-line with the pseudo-first-order and pseudo-second-order kinet-ics at 10 and 20-500 mg/L concentrations,respectively.Thermodynamic assay showed the spontaneity and endothermicity features of the 3D MnO2/rGO-acetaminophen system.The acetaminophen adsorption mechanisms were mainly hydrogen bonding and pore entrap-ment.Moreover,the as-synthesised aerogel was effectively regenerated using acetone and re-utilised in four adsorption-desorption cycles.Overall,the results highly recommend the implementation of the 3D MnO2/rGO hybrid aerogel for purification of wastewater polluted by acetaminophen residue.
文献关键词：
中图分类号：
作者姓名：
Billie Yan Zhang Hiew;Wan Ting Tee;Nicholas Yung Li Loh;Kar Chiew Lai;Svenja Hanson;Suyin Gan;Suchithra Thangalazhy-Gopakumar;Lai Yee Lee
作者机构：
Department of Chemical and Environmental Engineering,University of Nottingham Malaysia,Jalan Broga,43500 Semenyih,Selangor Darul Ehsan,Malaysia;Department of Chemical and Environmental Engineering,University of Nottingham Ningbo China,Ningbo 315100,China
文献出处：
引用格式：
[1]Billie Yan Zhang Hiew;Wan Ting Tee;Nicholas Yung Li Loh;Kar Chiew Lai;Svenja Hanson;Suyin Gan;Suchithra Thangalazhy-Gopakumar;Lai Yee Lee-.Synthesis of a highly recoverable 3D MnO2/rGO hybrid aerogel for efficient adsorptive separation of pharmaceutical residue)[J].环境科学学报（英文版）,2022(08):194-203
A类：
engrafted,spontaneity,endothermicity,entrap
B类：
Synthesis,highly,recoverable,MnO2,rGO,hybrid,aerogel,efficient,adsorptive,separation,pharmaceutical,residue,Water,contamination,by,steroidal,anti,inflammatory,drugs,such,acetaminophen,emerging,ecological,concern,In,this,study,new,three,dimensional,manganese,dioxide,reduced,graphene,developed,sequestration,involved,firstly,self,assembly,followed,thermal,reduction,situ,growth,redox,reaction,demonstrated,interlinked,planes,smooth,surfaces,deposited,nanospheres,pores,width,influences,adsorbent,dosage,initial,temperature,contact,were,investigated,It,deter,mined,that,adsorption,occurred,uniform,sites,suggested,best,fit,data,Langmuir,isotherm,yielding,maximum,capacity,This,highest,performance,attained,process,kinetics,line,pseudo,order,second,concentrations,respectively,Thermodynamic,assay,showed,features,system,mechanisms,mainly,hydrogen,bonding,Moreover,synthesised,effectively,regenerated,using,acetone,utilised,four,desorption,cycles,Overall,results,recommend,implementation,purification,wastewater,polluted
AB值：
0.532467
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