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基于非贵金属镍的金属有机大环的光解水放氢性能（英文）.docx

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基于非贵金属镍的金属有机大环的光解水放氢性能（英文） Abstract Theutilizationofnon-preciousmetalnickel(Ni)asacatalystforhydrogenevolutionreaction(HER)hasattractedgrowingattentionduetoitslowcostandhighabundance.Inrecentyears,researchhasbeenfocusedondevelopingmetal-organicframeworks(MOFs)basedonNiforefficientphotocatalyticwatersplitting.Onepromisingcandidateisthemetal-organicmacrocycle(MOM)withauniquemolecularstructureandexcellentcatalyticproperties.ThisreviewsummarizesrecentadvancesinthedevelopmentofMOM-basedphotocatalystsforHERanddiscussestheunderlyingmechanismsoftheirphotocatalyticactivity. Introduction Theincreasingglobalenergydemandandenvironmentalconcernshavepromptedthedevelopmentofnewandcleanenergytechnologies.Amongthem,hydrogenproductionviaphotocatalyticwatersplittingisapromisingalternativetofossilfuels.TheprocessinvolvestheuseofacatalysttodrivetheHERreaction,wherewaterisconvertedtohydrogenandoxygenunderirradiation. VariousmaterialshavebeenexploredasphotocatalystsforHER,includingsemiconductors,metals,andmetaloxides.However,mostofthemrelyonpreciousmetalssuchasplatinum(Pt)andiridium(Ir),whichareexpensiveandscarce.Therefore,thedevelopmentofnon-preciousmetal-basedcatalystsishighlydesirable. Recently,attentionhasbeenfocusedonMOFsaspromisingmaterialsforHER.MOFsarehighlyporousmaterialsconsistingofmetalionsorclusterslinkedbyorganicligandstoforma3Dframework.Theiruniqueproperties,suchashighsurfacearea,tunableporosity,andversatilefunctionality,makethemattractiveforvariousapplications,includingenergyconversionandstorage. AmongdifferentMOFs,MOMsareasubclassofMOFswitharing-shapedstructure.Theyexhibitexcellentstability,highporosity,anduniqueelectronicproperties,whicharedesirableforphotocatalysis.Inthisreview,wewilldiscusstherecentadvancesinthedevelopmentofMOM-basedphotocatalystsforHERandtheunderlyingmechanismsoftheiractivity. SynthesisandCharacterizationofMOMs MOMsaretypicallysynthesizedusingasolvothermalmethod,wheremetalionsandorganicligandsaremixedinasuitablesolvent,followedbyheatingathighpressurean