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当前位置:首页 > 商业/管理/HR > 公司方案 > 超声制纳米TiO2及光催化降解活性深蓝的研究刘满红
Sonochemicalpreparationofnano-TiO2andphotocatalyticdegradationofactivateddarkblueST-2GLNLiuManhong,HuYuanfei,WangRui,LiuXiaofang,PanJijun(SchoolofChemistryandBiotechnology,YunnanUniversityofNationalities,Kunming650031,China)TiO2,,,,(,650031)[]TiCl4TiO2,,ST-2GLN,TiO2。:TiO2;300℃TiO21.0g/L,25℃,8W(254nm),ST-2GLN30mg/L,80min99.7%。[]TiO2;;ST-2GLN;[]TQ426[]A[]1005-829X(2010)06-0025-03Abstract:Thepreparationofnano-TiO2bysonochemicalhydrolysisofTiCl4isintroduced,andthemechanismofultrasoundisdiscussed.TheeffectsofultrasoundandcalcinationtemperatureonthephotocatalyticdegradationofactivedarkblueST-2GLNareexperimentallyinvestigated.Theresultsshowthatultrasoundimprovesthephoto-catalyticcapacityofnano-TiO2greatly.Undertheoptimizedconditionsasfollows:thenano-TiO2obtainedbycalcinationsat300℃,thecatalystdosageis1.0g/L,temperature25℃,ultravioletirradiation8W(wavelength254nm),andtheaqueoussolutioninitialconcentrationofactivateddarkblueST-2GLN30mg/L,thedegradationrateisupto99.7%in80min.Keywords:nano-TiO2;ultrasonic;activateddarkblueST-2GLN;photocatalysisTiO2、、、、、,〔1-2〕。TiO2〔3〕,,≤388nm,,-,h+TiO2OH-H2OHO·,HO·CO2、H2O〔4-5〕。TiO2,TiO2〔6〕。TiCl4,TiO2,ST-2GLN,TiO2,、、、。11.1:UV-9200-,;KQ-100,;JB90-D,;DHG-9140A,;,;,。:TiCl4,AR,;AgNO3,AR,;ST-2GLN,。1.21.2.1TiO2TiCl4,TiCl4,、、[](207108)30620106IndustrialWaterTreatmentVol.30No.6Jun.,201025——2010-06,30(6),10h,1∶5pH≈7,、Cl-(),100℃4h,,74μm。0.1gTiO2,ST-2GLN,,TiCl4、、TiO2。1.2.2TiO24TiO2,2℃/min,200、300、400、500℃4.0h,TiO2,,74μm。ST-2GLN,。1.2.3TiO2(1)。-ST-2GLN,-,,,。0.1gTiO2,30mg/LST-2GLN100mL,50cm2,8W(254nm),,-600nm,,。22.1TiO22.1.1TiCl4TiCl40.1、0.2、0.3、0.4、0.5、0.6、0.7、0.8、0.9、1.0、2.0mol/L,25min,80℃1h,25minTiO2。TiCl4TiO2ST-2GLN1h,2。2,TiCl4≤0.5mol/L,TiO2,0.5mol/LTiO2。2.1.2TiCl40.3mol/L,25min,60、65、70、75、80、85、90、95、100、105、110℃1h,25minTiO2。TiO2ST-2GLN,3。3,80~90℃TiO2,TiCl4,。2.1.3TiCl40.3mol/L8,0、10、20、30、40、50、60min90℃1h,25minTiO2;TiCl48,25min90℃1h,0、10、20、30、40、50、60minTiO2。TiO2ST-2GLN,4。4,20minTiO2,26——2010-06,30(6),:TiO240min。TiCl4,,TiCl4。,。,、XTiCl4。TiCl4〔7〕:TiCl4→[Ti(OH)n(H2O)6-n](4-n)+→[Ti4(OH)2n(H2O)2n]2n+→-[TinO4n]4n-→。,。TiCl4TiO2,、(),。TiCl4TiCl4,TiCl4,[Ti(OH)nCl6-n]2-,90℃,[Ti(OH)nCl6-n]2-,,,OH-H2O,,,〔8-9〕。,TiCl4,TiO2。TiO2,TiO2〔9〕,、、TiO2。2.2TiO2200、300、400、500℃ST-2GLN5。5,300℃,,80min99.7%;500℃,;200℃400℃,200℃400℃。〔9〕:TiO2450~700℃,ST-2GLN80%。300℃4h,1.0g/L,25℃,ST-2GLN30mg/L,80min99.7%。,,,TiO2。3TiCl4,、、TiO2。、()、,,、TiO2。300℃4h,30mg/LST-2GLN80min99.7%。TiO2、、,TiO2、。[][1]HagerDG.Industrialwastewatertreatmentbygranularactivatedcarbon[J].Am.DyestuffReporter,1998,62(11):69-75.[2]KarcherS,KornmüllerA,JekelM.Removalofreactivedyesbysorption/complexationwithcucurbituril[J].Wat.Sci.Tech.,1999,40(4/5):425-433.[3].[D].:,1998.[4]DongRueyan,ChangWenhuei.Photoassistedtitaniumdioxidemediateddegradationoforganophosphoruspesticidesbyhydrogenperoxide[J].J.Photochem.Photobiol.A:Chemistry,1997,107(1/2/3):239-244.[5],,.TiO2[J].,2002,25(5):46-48.[6]WangJun,GuoBaodong,ZhangXiangdong,etal.SonocatalyticdegradationofmethylorangeinthepresenceofTiO2catalystsandcatalyticactivitycomparisonofrutileandanatase[J].Ultrason.Sonochem.,2005,12(5):331-337.[7]SuslickKS,PriceGJ.Applicationsofultrasoundtomaterialschemistry[J].Annu.Rev.Mater.Sci.,1999,29(1):295-326.[8]AwatiPS,AwateSV,ShahPP,etal.Photocatalyticdecompositionofmethyleneblueusingnanocrystallineanatasetitaniapreparedbyultrasonictechnique[J].CatalysisCommunications,2003,4(8):393-400.[9]YuJiaguo,ZhouMinghua,ChengBei,etal.Ultrasonicprepara-tionofmesoporoustitaniumdioxidenanocrystallinephotocatalystsandevaluationofphotocatalyticactivity[J].JournalofMolecularCatalysisA:Chemical,2005,227(1/2):75-80.[](1962—),1987,,。:0871-5127183,E-mail:lmh6211@126.com。[]2010-02-04()27——
本文标题:超声制纳米TiO2及光催化降解活性深蓝的研究刘满红
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