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铂基合金纳米团簇的结构寻优研究 Title:StructuralOptimizationofPlatinum-BasedAlloyNanoclusters:AStudy Introduction: Platinum-basedalloynanoclustershavegainedsignificantattentioninthefieldofmaterialsscienceandcatalysisduetotheiruniquepropertiesandapplications.Nanoclusters,whichoftenconsistofonlyafewtoafewhundredatoms,exhibitdifferentphysicalandchemicalpropertiescomparedtobulkmaterials.Thesepropertiescanbefurthertunedbyalloyingplatinumwithotherelements,creatingopportunitiesforvariousapplicationssuchascatalysis,energyconversion,andsensing. StructuralOptimizationMethods: Thestructuraloptimizationofplatinum-basedalloynanoclusterscanbeachievedthroughvariouscomputationalmethods.DensityFunctionalTheory(DFT)calculations,moleculardynamicssimulations,andgeneticalgorithmsarecommonlyusedtechniquestoexploretheenergylandscapeofnanoclusters.Thesemethodsallowfortheexplorationofdifferentatomicarrangements,determiningthemoststableandfeasiblestructures. CompositionOptimization: Oneimportantaspectofstructuraloptimizationisthecompositionoptimizationofplatinum-basedalloynanoclusters.Thechoiceofalloyingelementsplaysacrucialroleindeterminingthepropertiesofthenanocluster.Variouselements,suchastransitionmetals,rareearthmetals,andnon-metals,canbealloyedwithplatinumtoenhanceitscatalyticactivity,stability,andselectivity.Theoptimalcompositioncanbedeterminedbyassessingtheenergeticstability,latticematch,andelectrochemicalpropertiesofthealloy. SizeOptimization: Thesizeofnanoclustersisanotherparameterthatcansignificantlyinfluencetheirproperties.Optimizingthesizeofplatinum-basedalloynanoclustersinvolvesfindingtheclustersizethatoffersthehighestsurfaceareatovolumeratiowhilemaintainingstructuralstability.Thisisessentialforcatalyticapplicationsashighersurfaceareaallowsformoreactivesites,leadingtoincreasedreactivity.Computationalmethodscanhelpexplorethestabilityandpropertiesofnanoclustersofdifferentsizes,enablingtheidentificationoftheoptimalsizeforspecificapplications. SurfaceLigandOptimization: Surfaceligandscanplayacriti