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3、11!』!1·』·4刪蚪磐鞘Y1940977黑龍江大學(xué)碩士學(xué)位論文AbstractNano—sizedTi02photocatalytictechnologyhasdevelopedtobeakindofhi出efficientandenvironmentalpollutioncontroltechnologies．Thecurrentresearchfocusesontheenhancementofphotocatalyticactivityandtheefficiencyofutilizingvisible—li
4、ght．BasedonthecurrentresearchofphotocatalystdopingTi02homeandabroad，tri—dopedTi02nRno-particlesweresynthetizedinthispaper．Thestructuresandphysicalandchemicalpropertiesoftheas··preparedsampleswerecharacterizedbyX--raydiffraction㈣)，nitrogenadsorption／desorptionmeasurements(BET)，Raman
5、spectroscopy(Raman)，X—rayphotoelectronspectroscopy(xPs)，F(xiàn)ouriertransitioninfraredspectrafFT-rR)，scanningelectronmicroscopy(SEM)，transmissionelectronmicroscopy(TEM)，UV-Visdiffusereflectancespectroscopy(DRS)andsurfacephoto-voltagespectroscopy(SPS)．Thephotocatalyticactivitiesofthetri-
6、dopedTi02photocatalystswereevaluated缸ou曲mede伊ad撕0nofRjlBandphen01uIldervisible·119htPirradiation,whichwerecomparedwiththebehaviorsofthehome-madepureTi02andcommercialDegussaP25Ti02．Inaddition，themechanismsoftheenhancementofvisible—lightphotocatalyticactivityofthetri-dopedTi02nano-pa
7、rticleswereanalyzedindetailed．(1)Fe-N—S-tridopedTi02photocatalystwaspreparedviaasol-gelprocessbyusingammoniumferroussulfateasdopant．Theeffectsofthedopingdosageandcalciningtemperatureonthestructureandphotocatalyticactivityofthetri—dopedTi02photocatalystswereinvestigated．Theresultssh
8、owedthattheextensionoflightabsorptionedgeintherangeofvisible—lightWasupto670nm．ThemodifiedTi02calcinedat350℃with1．0m01％ammoniunlferroussulfatecontentexhibitedthebestphotocatalyticperformance．Underthevisible—lightirradiation、析m120min,theremovalrateforRhBcouldachieve91．5％．．1I．喻Abstra
9、ct(2)C-N—S-tridopedTi02photocatalystwaspreparedthroughasol-gelprocessbyusingcystineasdopant．111eeffectsofthedopingdosageandcalciningtemperatureonthestructureandphotocatalyticactivityofthetri—dopedZi02photocatalystswerealsoinvestigated．Theresultsshowedthattheextensionoflightabsorpti
10、onedgeintherangeofvisible-
