“二氧化铈催化研究进展专刊”前言（英文）-豆柴文库

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“二氧化铈催化研究进展专刊”前言（英文）
Introduction
Ceriumdioxide(CeO2)isawidelyutilizedmaterialduetoitsremarkablecatalytic,optical,andelectronicproperties.CeO2iscommonlyknownasceria,whichisanessentialcomponentinvariousindustrialapplications,includingexhaustcatalysts,metaloxidegassensors,solidoxidefuelcells,andchemicalloopingcombustion.Furthermore,CeO2isusedintheproductionofglass,catalyticconverters,andelectronics.Inrecentyears,researchershavefocusedonthedevelopmentofCeO2-basedcatalystsduetotheirabilitytoimprovechemicalreactions’efficiency.
Background
CeO2isapromisingcatalyst,andresearchershavefocusedonitscatalyticpropertiesowingtoitsredoxpotentials,oxygenstoragecapacity,andlatticedefects.CeO2hasvariousoxidationstates,rangingfromCe(III)toCe(IV),duetoitseaseofoxidation-reductionreactions.CeO2’soxygenvacancyconcentrationsinfluencethecatalyticproperties,andtheoxygenstoragecapacityprovidesasurplusofoxygentothereaction.CeO2catalyzesreactionsbysupplyingorscavengingoxygenandregulatingtheredoxstatesofothertransitionmetals.ThecatalyticmechanismsofCeO2havebeenstudiedextensivelyinthelastdecade,involvingacidity,basicity,polarity,andchargetransferatthesolid/gasinterface.
RecentAdvancements
ThepurposeofthisspecialissueistopresentrecentadvancesinCeO2-basedcatalysts’design,synthesis,andapplications.Thecontributionsofthisissuecoverabroadrangeoftopics,includingnewsynthesismethods,dopingstrategies,andcharacterizationtechniques.Additionally,theapplicationofCeO2-basedcatalystsindiversereactionssuchasCOoxidation,NOxreduction,andmethanecombustioniswell-covered.
CeO2-basedcatalystshavebeensignificantlyenhancedbyvariousmodificationstrategies,includingdoping,shaping,andusingsupportmaterials.NumerousstudiesondopingCeO2withotherelements,suchastransitionmetals,noblemetals,andmetaloxides,haveresultedinimprovedcatalyticactivityandstability.Inaddition,researchershavedevelopedvarioussynthesistechniquesforpreparinghigh-performanceCeO2-basedcatalysts.Forexample,Niuetal.reportedasol-gelmethodofsynthesizingCeO2nanospher