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《金屬-非金屬共摻雜納米tio,2的制備及其光催化性能研究》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、分類號：!!竺密級：——單位代碼：】Q墨§9學(xué)號：唑!!墮!!!!墮10舍肥工學(xué)火警HefeiUniversityofTechnology碩士學(xué)位論文MASTERDISERTATIoNo論文題目：金屬一非金屬共摻雜納米啊o：的制備及其學(xué)位類別：學(xué)科專業(yè)：(工程領(lǐng)域作者姓名：導(dǎo)師姓名：完成時(shí)間：PreparationandPhotocatalyticPropertyofSandFeCo-dopedTi02NanoparticlesAbstractTi02’Sphotonutilizationefficiency
2、islowanditcouldbeexcitedonlybyultraviolet(UV)source，SoS／FeandS／ZnCO—dopednanocrystallineTi02photocatalystswerepreparedbyhydrothermalmethodinthispaper．Thecompositionandpropertiesoftheas—preparedTi02powderswerecharacterizedbyXRD，XPS，UV-visDRS，andSOon．Thefacto
3、rsinfluencingCO—dopednanOcrystallincTi02phOtocataIysticpropertieswerediscussed．TheresultsshowedthatS／FeCO-dopedanataseTi02wassynthesizedbyTi(S04)2，F(xiàn)eCl3andthiourea．SulfurwasintheformsofS。andS04。，F(xiàn)ewasintheformsofFe”dopinginthelatticeofTi02．Thephotocatalysts
4、howedexcellentcatalyticactivityunderthevisiblelight．Absorbtioninthevisiblelightdistrictwasenhancedandthebandedgemovedtolongerwavelengthobviously．WhenthemolarratioofFe’+：S：Tiwas0．005：1：1，theanataseTi02一S·Fehydrothermallytreatedat180"Cfor3hexhibitedthehighist
5、photocatalyticperformance．Degradationrateofmethylorangewas32．5％underdaylightirradiationfor2h．S／FeCO·dopedrutileTi02wassynthesizedbyTiCl4，F(xiàn)eCl3andthiourea．ComparedtoTi02，itsbindingenergyatTi2p3／2raisedby2．0eV，showedthatS，F(xiàn)epartlyreplacedthebindingpositionofT
6、i”withoxygen．Absorbtioninvisiblelightdistrictwasobviouslystrengthenedandthecatalysthadthestrongestabsorbtion(b400nm)．WhilethemolarratioofFe“：S：Tiwas0．025：1：1，thecatalystpreparedat180℃for2hhadthehighistcatalyticactivity．Degradationrateofmethylorangewas70．9％u
7、nderdaylightirradiationfor4h．S／ZnCO·dopedanataseTi02wassynthesizedbyTi(S04)2，ZnS04andthiourea．ThedopingconcentrationofZnandpHvalueofinitialsolutionaffectedthestructureofS／ZnCO·dopedsample．ZnOwasobtainedwhenthemolarratioofZn：Tiwas1；anataseTi02wasobtainedwhen
8、themolarratioofZn：TiwasJowerthan0．33underacidicconditionwhileunformedTi02wasobtainedunderalkalineconditionandZnOwasnotobserved．Zn“maydisperseduniformityonthesurfaceofTi02intheformsofZnOcluster．Whenthem
