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简介：以钛酸四丁酯（TBOT）为前驱体，三嵌段共聚物（P123）为模板剂，用溶胶一凝胶法合成了孔径分布均匀的介孔TiO2；用小角X射线衍射（SAXRD）、X射线粉末衍射（XRD）、透射电子显微镜（TEM）和红外光谱（FT-IR）等分析手段对产物结构和光学性能进行了表征。结果表明：TiO2为介孔结构，在低于400℃煅烧时介孔结构稳定性高，孔径均匀分布，晶型全部为锐钛矿。光催化降解对氯苯酚表明介孔TiO2具有优异的催化性能，在250W紫外灯照射2h后，氯化有机物中的苯环特征峰完全消失，降解率可达95．3％。

简介：摘要：光催化氧化法降解染料废水是目前研究的热点，而纳米TiO2化学性质稳定、难溶于酸和碱、成本低而活性高，其应用前景极好，是研究的热点之一。本文研究了在可见光照射条件下，N, Co掺杂的介孔二氧化钛催化剂光催化降解碱性品红的情况，研究结果表明，该催化剂具有高效的可见光催化活性。

简介：以聚合物三聚氰胺甲醛（MF）微球为模板，十六烷基三甲基溴化铵（CTAB）为致孔剂，经溶胶-凝胶和高温煅烧两步法，制备了TiO2介孔结构的空心微球。以亚甲基蓝水溶液为模型物，评价了TiO2微球的光催化活性能。采用扫描电镜、透射电镜、红外光谱、氮气吸附-脱附、x射线衍射、紫外-可见分光光度法等测试手段对空心微球的结构、形貌和光谱性质进行了表征。结果表明，TiO2空心微球的粒径在300nm左右，具有完整的球形空腔、较高的比表面积和介孔结构壳层，并且在模拟太阳光下有高效的光催化活性。

简介：ItiswellknownthatthephotocatalyticactivityofTiO2thinfilmsstronglydependsonthepreparingmethodsandpost-treatmentconditions,sincetheyhaveadecisiveinfluenceonthechemicalandphysicalpropertiesofTiO2thinfilms.Therefore,itisnecessarytoelucidatetheinfluenceofthepreparationprocessandpost-treatmentconditionsonthephotocatalyticactivityandsurfacemicrostructuresofthefilms.ThisreviewdealswiththepreparationofTiO2thinfilmphotocatalystsbywet-chemicalmethods(suchassol-gel,reversemicellarandliquidphasedeposition)andthecomparisonofvariouspreparationmethodsaswellastheiradvantageanddisadvantage.Furthermore,itisdiscussedthattheadvancementofphotocatalyticactivity,super-hydrophilicityandbactericidalactivityofTiO2thinfilmphotocatalystinrecentyears.

简介：以工业水玻璃为硅源,表面活性剂十六烷基三甲基溴化铵为结构模板剂,利用室温晶化法合成出MCM-41介孔分子筛,并以钛酸丁酯为前驱体,通过溶胶凝胶法及液相沉积法对介孔分子筛MCM-41进行纳米TiO2的组装。运用XRD、FT-IR、N2吸附-脱附等表征手段对其结构特征和氧化钛分散状态进行了研究,结果表明：TiO2与MCM-41端基硅氧键反应形成Ti-O-Si键;纳米TiO2不仅进入孔道,较均匀地修饰了介孔分子筛MCM-41的孔壁,而且使介孔分子筛MCM-41仍保持有序的孔道结构。

简介：采用回流沉淀法、微波模板辅助法和水热法分别制备了TiO2纳米颗粒，采用Xrd对催化荆进行了表征。考察了不同制备方法的催化剂光催化活性。实验结果表明，3种方法制备的TiO2对甲基橙溶液的光催化降解能力较高，采用微波模板辅助法制备的TiO2催化剂催化活性最高，对甲基橙的降解效果最好。催化剂用量为0．4g，紫外光照射60min，浓度为12mg／L的甲基橙溶液降解率为80％。

简介：TiO2/Au/TiO2多层的薄电影用dc(直接水流)在房间温度在聚合物底层被扔磁控管劈啪作响方法。由改变每层的厚度，TiO2/Au/TiO2多层的电影的光、电的性质能被定制适合不同应用。厚度和Au层的光性质和Au绝缘的接口的质量为Au绝缘的多层的薄电影的电、光的表演是批评的。在8nm的厚度，Au层形成有最低抵抗力和它的连续结构一定为高发射度薄。多层的栈能被优化有6的一个表电阻?在在在波长的680nm的超过80%的发射度的/sq.。当时，山峰发射度向长波长区域变二TiO2的厚度(上面、更低)层增加。当二部TiO2电影的电影厚度是45nm时，高发射度价值为全部可见轻波长区域被获得。

简介：TiO_2isapromisingphotocatalyst.However,thelowphotocatalyticefficiencycallsforthemodificationofTiO_2.Metal-andnonmetal-dopingofTiO_2havebeenprovedtobeeffectivewaystoenhancephotocatalyticproperties.Thisreviewprovidesadeepinsightintotheunderstandingofthemetal-andnonmetal-dopedTiO_2photocatalysts.ThisarticlebeginswiththeintroductionofthecrystalstructuresofTiO_2andapplicationsofTiO_2materials.Wethenreviewedthedoped-TiO_2systemintwocategories:(1)metal-dopedTiO_2photocatalystssystem,and(2)nonmetal-dopedTiO_2photocatalystssystem.Bothexperimentalresultsandtheoreticalanalysesareelaboratedinthissection.Inthefollowingpart,fortheadvantagesofTiO_2thinfilmsoverparticles,variouspreparationmethodstoobtainTiO_2thinfilmsarebrieflydiscussed.Finally,thisreviewendswithaconciseconclusionandoutlookofnewtrendsinthedevelopmentofTiO_2-basedphotocatalysts.

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简介：在酸性TiO2水悬浮体系中，利用光催化反应生成的羟基自由基可以实现对于VX的有效消毒。VX降解历程主要是通过P-S键的断裂，生成低毒或无毒的中间产物，甲基膦酸二乙酯、甲基膦酸等。随着反应的继续，最终达到彻底矿化，最终产物为SO4^2-、NO3^-、PO4^3-和CO2。生成的SO4^2-离子浓度与反应中硫元素彻底矿化的量相对应，而反应生成的NO3^-、PO4^3-远小于其理论矿化值，这表明在酸性条件下光催化消除VX是一个有选择的过程。

简介：HuntsmanTioxide公司自2004年10月1日以来将所有的二氧化钛产品价格上调，出售给全球用户。在美国，除FC5，TR28和所有锐钛型产品上涨0．07美元／lb外，其它所有产品均上涨O．06美元／lb。在加拿大，FC5、TR28和所有锐钛型上涨0．09加元／lb，其它所有产品上涨0．08加元／lb。在欧洲，

简介：TheinfluenceofcalcinationtemperatureonTiO2nanotubes’catalysisforTiO2/UV/O3wasinvestigated.TiO2nanotubes(TNTs)werepreparedviathesol-gelmethodandcalcinedat300—700℃,whichwerelabeledasTNTs-300,TNTs-400,TNTs-500,TNTs-600andTNTs-700,respectively.TNTswerecharacterizedbytransmissionelectronmicroscopy(TEM)andX-raydiffraction(XRD).ItisfoundthatTNTscalcinedat400℃showedthebestthermalstability.Whenthecalcinationtemperatureincreasedfrom400℃to700℃,thespecialstructureoftubeswasdestroyedandgraduallyconvertedintonanorodsand/orparticles.Thetransformationfromanatasetorutileoccurredat600℃,andtherutilephasewasenhancedwhenthecalcinationtemperaturewasincreasedtoover600℃.Thecalcinationtemperature’sinfluenceonTNTs’adsorptionactivityforchemicaloxygendemand(COD)andcatalyticactivityforTiO2/UV/O3wasinvestigatedinlandfillleachatesolution.Inlandfillleachatesolution,theadsorptionactivityofCODdecreasedinthereducedorderofTNTs-300,TNTs-400,TNTs-500,TNTs-600andTNTs-700.Inphotocatalyticozonation,TNTs-400showedthebestcatalyticactivitywhileTNTs-700exhibitedtheworst.Inotherthreeprocesses,theCODremovalofTNTs-300/UV/O3washigherthanthoseofTNTs-500/UV/O3andTNTs-600/UV/O3inthefirst20min,andthenbecameclosetothoseofthelattertwointhefollowing40min.ComparedwithTNTs-300andTNTs-400,TNTs-600hadthebestanti-foulingactivity,whileTNTs-500andTNTs-700hadloweranti-foulingactivitythantheformerthree.Inphotocatalyticozonation,thecalcinationtemperatureof400℃wasappropriatewhenTNTswereobtainedatthesynthesistemperatureof105℃.

简介：ThephotodegradationreactionrateofCHCl3inTiO2particulatesuspensionwasimperovedsignificantlybyHCl-treatment.TheeffectofHCl-treatmentonthephotocatalyticactivityofTiO2wasstrdiedinaPECcellbyusingIntensity-ModulatedPhotocurrentSpectroscopy(IMPS).ThemagntudeofphotocurrentresponseandthecharacteristicfrequenciesoftheupperandlowersemicirclesinthecomplexplaneofIMPSresponsewereanalyzed,andtheccathodicandanodicreactionprocessesofphotogeneratedholesandelectronswerediscussed.Theincreasesinthecathodicandanodicphotocurrentresponseandinthetimeconstantsofbothcathodicandanodicreactionprocessesofphotogeneratedholesandelectronswerediscussed.TheincreasesinthecathodicandanodicphotocurrentresponseandinthetimeconstantsofbothcathodicandanodicreactionprocessesindicatethatHCl-treatmentleadstotheimprovementofthephotocatalyticactivityofTiO2andachangeofthephotocatalytickineticmechanism.

简介：HomogeneousNi2+-dopedtitaniagelwassynthesizedbyasol-gelprocess,andthexerogelwasthenobtainedthroughaginganddrying,leadingtotheformationofNi/TiO2nanocompositeafterheattreatmentunderasuitablereducingatmosphere.TheresultingnanocompositewascharacterizedbyTGA-DSC,TEM,XRDandBETmethods.Theresultsshowthatthestructureandgrainsizeofthenanocompositescouldbemanipulatedbyalteringtheheat-treatmentconditions,andthatthenanocompositepossessesamesoporousstructurewithaporeradiusofca.28nmandaspecifictheanatase-rutilephasetransformation.

简介：hePhotocatalyticcharacterizationofTiO2supportedonactivecarbonwasinvestigatedforphotocatalyticdecompositionofdichloroaceticacid.ItwasfoundthatTiO2/ACexhibitedahigherphotocatalyticactivitythanpureTiO2.ThereasonisthatactivecarbonactingaspowerfuladsorbentsupportsmakeshighconcentrationenvironmentsoforganicpollutantmoleculesaroundTiO2particles.

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简介：TiO2filmswereformedonmetallictitaniumsubstratesbytheanodicoxidationmethodinH2SO4solutionunderthe80VD.C..PhasecomponentandmicrostructurewerecharacterizedbyX-raydiffraction(XRD)andscanningelectronmicroscopy(SEM).Watercontactanglesontitaniumoxidefilmsurfaceweremeasuredunderbothdarkandsunlightilluminationconditions.Corrosiontestswerecarriedoutinseawaterunderdifferentilluminationconditionsbyelectrochemistryimpedancespectrum(EIS)andpolarizationcurves.TheresultshowedthattheTiO2filmpreparedbytheanodicoxidationmethodwasanatasewithauniformstructureandwithoutobviousporesorcracksonitssurface.Theaveragewatercontactangleofthefilmwas116.4?indark,incontrasttoanangleof42.7?undertheUVilluminationfor2hours,whichdemonstratesgoodhydrophobicproperty.Theanti-corrosionbehavioroftheTiO2filmwasdecliningwiththeextendedimmersiontime.Underdarkconditions,however,thehydrophobicTiO2filmretardedthewaterinfiltratingintothesubstrate.Theimpedancechangedslowlyandthecorrosioncurrentdensitywas2ordersofmagnitudelowerthanthatwiththefilmilluminatedbysunlight.AllofthosementionedaboveindicatethattheTiO2filmpossessesmuchbetterperformanceunderdarkcondition,anditcanbeappliedasanengineeringmaterialunderdarkseawaterenvironment.

简介：全球重要化学品公司亨斯迈公司颜料和添加剂部门计划在2016年第四季度关闭位于南非温博金推尼的25000吨／年二氧化钛（TiO2）生产设施。该公司称，工厂关闭将增加颜料和添加剂业务的竞争力，同时这也是其分离计划进程中的重要一步。

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