基于離子摻雜各向異性類普魯士藍(lán)的設(shè)計及催化性能研究

基于離子摻雜各向異性類普魯士藍(lán)的設(shè)計及催化性能研究摘要：

本文研究了基于離子摻雜各向異性類普魯士藍(lán)的設(shè)計及催化性能。通過一系列的實(shí)驗(yàn)，通過摻雜不同離子（如Co2+、Ni2+、Cu2+等）來制備不同離子摻雜的各向異性類普魯士藍(lán)。同時，使用X射線衍射、掃描電鏡、透射電鏡和能譜儀等手段對樣品的結(jié)構(gòu)和形貌進(jìn)行了表征。

實(shí)驗(yàn)結(jié)果表明，摻雜各向異性類普魯士藍(lán)的光催化性能得到了顯著提高。以光催化降解有機(jī)染料為反應(yīng)模型，通過比較不同離子摻雜的各向異性類普魯士藍(lán)的催化活性，發(fā)現(xiàn)其中以Cu2+摻雜的樣品具有最佳的催化活性。通過進(jìn)一步的實(shí)驗(yàn)研究，發(fā)現(xiàn)樣品的表面孔徑大小和表面缺陷密度對催化活性具有重要影響。

綜上所述，本文制備了一系列摻雜不同離子的各向異性類普魯士藍(lán)，發(fā)現(xiàn)其中以Cu2+摻雜的樣品催化活性最佳，對其催化性能進(jìn)行了詳細(xì)研究。這些成果對于提高光催化降解有機(jī)污染物的效率有一定的指導(dǎo)作用。

關(guān)鍵詞：各向異性類普魯士藍(lán)；離子摻雜；光催化性能；表面孔徑；表面缺陷密度

Abstract：

ThisarticlestudiesthedesignandcatalyticperformanceofanisotropicPrussianbluebasedoniondoping.Throughaseriesofexperiments,anisotropicPrussianbluedopedwithdifferentions(suchasCo2+,Ni2+,Cu2+,etc.)wasprepared.Atthesametime,thestructureandmorphologyofthesampleswerecharacterizedbyX-raydiffraction,scanningelectronmicroscopy,transmissionelectronmicroscopy,andspectrometer.

ExperimentalresultsshowthatthephotocatalyticperformanceofthedopedanisotropicPrussianbluehasbeensignificantlyimproved.Usingthephotocatalyticdegradationoforganicdyesasareactionmodel,bycomparingthecatalyticactivityofanisotropicPrussianbluedopedwithdifferentions,itwasfoundthatthesampledopedwithCu2+hadthebestcatalyticactivity.Throughfurtherexperimentalresearch,itwasfoundthatthesurfaceporesizeandsurfacedefectdensityofthesamplehaveanimportantinfluenceonthecatalyticactivity.

Insummary,thisarticlesynthesizedaseriesofanisotropicPrussianbluedopedwithdifferentions,foundthatthesampledopedwithCu2+hadthebestcatalyticactivityandconductedadetailedstudyonitscatalyticperformance.Theseachievementshaveacertainguidingeffectonimprovingtheefficiencyofphotocatalyticdegradationoforganicpollutants.

Keywords:anisotropicPrussianblue;iondoping;photocatalyticperformance;surfaceporesize;surfacedefectdensitTheanisotropicPrussianbluedopedwithdifferentionsshowedpromisingresultsinimprovingthephotocatalyticperformanceoforganicpollutants.Amongthem,Cu2+-dopedanisotropicPrussianbluedemonstratedthehighestcatalyticactivity,owingtoitsenhancedsurfaceareaandhighersurfacedefectdensity.Additionally,thesurfaceporesizeofthecatalystplayedacrucialroleindeterminingitsphotocatalyticactivity.ThesmallporesizeoftheCu2+-dopedanisotropicPrussianbluefacilitatedtheadsorptionoforganicmoleculesonthesurface,leadingtobettercatalyticefficiency.

ThestudysuggeststhationdopingcansignificantlyenhancethephotocatalyticperformanceofanisotropicPrussianblue.Furthermore,thetypeofdopantandthesurfacepropertiesofthecatalystsinfluencetheircatalyticactivity.Thesefindingscanhaveapplicationsindevelopinghighlyeffectivecatalystsforenvironmentalremediationandotherindustrialapplications.FutureresearchcanfocusonexploringtheunderlyingmechanismofiondopinginimprovingthephotocatalyticpropertiesofanisotropicPrussianblueanddevelopingmoreefficientcatalystsAnisotropicPrussianblueisapromisingphotocatalystforenvironmentalremediationduetoitsexcellentstabilityandefficientphotocatalyticperformanceundervisiblelightirradiation.TherecentstudieshaveshownthatthephotocatalyticpropertiesofanisotropicPrussianbluecanbesignificantlyimprovedbyiondopingandsurfacemodifications.

ThedopingofanisotropicPrussianbluewithdifferentdopantssuchasAg,Cu,Pt,andNihavebeendemonstratedtoenhanceitsphotocatalyticactivity.Forexample,theincorporationofAgionsintoanisotropicPrussianbluenanocubesincreasesitsphotocatalyticdegradationratefororganicpollutantsbyupto3timescomparedtopureanisotropicPrussianblue.Similarly,dopingwithCuionsimprovesthephotodegradationofphenolandmethylorangebyupto2.5times.

Theimprovedphotocatalyticperformanceofion-dopedanisotropicPrussianbluecanbeattributedtoseveralfactors.Firstly,thedopantionscaninducestructuraldefectsorsurfacestates,whichactasactivesitesforphotocatalyticreactions.Secondly,thedopantionscanenhancetheseparationofphotogeneratedchargesandreducetheirrecombination,therebyimprovingthephotocatalyticefficiency.Thirdly,thedopantionscanalterthebandstructureofanisotropicPrussianblue,leadingtoashiftintheabsorptionedgetowardsthevisibleregion,therebyincreasingtheutilizationofsolarenergy.

Besidesiondoping,surfacemodificationofanisotropicPrussianbluewithdifferentfunctionalgroupsormetalnanoparticlescanalsoleadtoenhancedphotocatalyticactivity.Forexample,modificationofanisotropicPrussianbluewithpolydopamineorTiO2nanoparticlescansignificantlyenhanceitsphotocatalyticdegradationofpollutantsundervisiblelightirradiation.

Inconclusion,thephotocatalyticpropertiesofanisotropicPrussianbluecanbeimprovedbyiondopingandsurfacemodifications.Thisresearchhasimplicationsforthedevelopmentofhighlyefficientphotocatalystsforenvironmentalremediationandotherindustrialapplications.FurtherstudiesareneededtoelucidatetheunderlyingmechanismsofiondopingandsurfacemodificationsinenhancingthephotocatalyticactivityofanisotropicPrussianblueandtodevelopmoreefficientphotocatalystsAnisotropicPrussianblueisapromisingmaterialforphotocatalyticapplicationsduetoitsuniquestructureandabilitytoabsorbvisiblelight.However,thephotocatalyticefficiencyofanisotropicPrussianblueisnotoptimalandcanbeimprovedthroughvariousmethods,includingiondopingandsurfacemodifications.

Iondopingisacommonmethodusedtoenhancethephotocatalyticpropertiesofmaterials.Itinvolvesintroducingadditionalionsintothematerial,whichcanalteritselectronicpropertiesandimproveitsphotocatalyticactivity.InthecaseofanisotropicPrussianblue,iondopingwithmetalssuchasplatinum,gold,andcopperhasbeenshowntosignificantlyimproveitsphotocatalyticefficiency.Forexample,platinum-dopedanisotropicPrussianbluehasbeenfoundtoexhibitahigheractivityinthedegradationofmethylorangecomparedtoundopedanisotropicPrussianblue.ThemechanismbywhichthesemetalionsenhancethephotocatalyticactivityofanisotropicPrussianblueisnotfullyunderstood,butitisthoughttoinvolvethecreationofadditionalchargecarriersandthemodificationoftheelectronicbandstructure.

Surfacemodificationsareanothermethodusedtoenhancethephotocatalyticpropertiesofmaterials.InthecaseofanisotropicPrussianblue,surfacemodificationscaninvolvecoatingthesurfacesofthematerialwithothersemiconductors,suchastitaniumdioxide(TiO2),orintroducingfunctionalgroupsontothesurface.Forexample,coatinganisotropicPrussianbluewithTiO2hasbeenshowntoimproveitsphotocatalyticactivitybyincreasingitssurfaceareaandcreatinganinterfacebetweenthetwomaterials.Similarly,introducingcarboxylgroupsontothesurfaceofanisotropicPrussianbluehasbeenfoundtoenhanceitsphotocatalyticactivitybyincreasingthenumberofactivesitesavailableforreaction.

Thedevelopmentofhighlyefficientphotocatalystsisimportantforenvironmentalremediationandotherindustrialapplications,suchasthedegradationofpollutantsinwastewaterandthegenerationofrenewableenergythroughthesplittingofwatermolecules.AnisotropicPrussianblueha