conjugated porous polymer c5ta06702b

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1、JournalofMaterialsChemistryAViewArticleOnlinePAPERViewJournal

2、ViewIssueCross-linkedpolymer-derivedB/Nco-dopedcarbonmaterialswithselectivecaptureofCO2†Citethis:J.Mater.Chem.A,2015,3,23352abaaaWuxueZhao,ShengHan,XiaodongZhuang,*FanZhang,*YiyongMaiacandXinliangFen

3、gAnewseriesofB,N-containingcross-linkedpolymers(PPs-BN)wereachievedviaSonogashiracrosscoupling.Thesepolymersexhibitveryhighcarbonyieldsofaround70–80%evenat800C,whichallowthemtobeefficientlyconvertedtoB/Nco-dopedporouscarbonsafterpyrolysisathightemperatureunderan

4、inertatmosphere.ThematerialshavebeenfullycharacterizedbyFouriertransforminfraredspectroscopy,X-raydiffraction,thermogravimetricanalyses,nitrogensorptionmeasurementsandX-rayphotoelectronspectroscopy,revealingtheirhighcontentsofboronandnitrogenupto3.21%andReceive

5、d25thAugust2015215.72%,respectively,aswellasporousstructureswiththelargestspecificsurfaceareaof291mg.Accepted5thOctober20151TheirCO2capacitiesreached3.25mmolgat273Kunder1atm.Inaddition,theveryhighselectivityDOI:10.1039/c5ta06702bforCO2/CH4witharatioofmorethan

6、5:1at298Krendersthemapplicableforgasseparationandwww.rsc.org/MaterialsApurification.Introductionadvantagesincludingexcellenthydrophobicityandhighthermalandchemicalstabilities.Inparticular,itispossibletoItisimportanttoreducegreenhousegases,predominatelyCO2,tailor

7、suchkindsofmaterialsandimprovetheirtexturalandoneofthechiefcontributorsresponsibleforglobalwarming,chemicalpropertiesbypre-andpost-syntheticmethods,whichhasanegativeimpactontheenvironmentandeconomy.1throughusingadiversityofprecursorsascarbonsources,AtmosphericC

8、O2concentrationshaveincreasedsignicantlyincoveringzeolites,silicaoxides,polymers,biomassandsoon.thelastcenturyandarecontinuouslyincreasingatafasterrate;However,relativelylowconversionefficiencyoftheprecursors,soitscaptureandstorageremainsabigchallengetoscientist

9、s.releasingoftoxicandcorrosiveby-products,atime-consumingThecurrenttechnologybeingemployedforpost-combustionandcostlyprocedure,etc.arealwaysdifficulttobeavoidedintheprocessofp