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简介：本文针对室内空气污染的特点进行了概述，阐述了光催化氧化技术研究现状。针对室内空气中主要污染物甲醛的具体情况，采用涂覆法制备出TiO2和活性炭纤维复合材料，并在实验中用于对低浓度甲醛的净化处理，进一步验证了光催化是一种具有应用前途的室内空气净化技术。

简介：以％型TiO2为光催化剂，在悬浮态流化床催化反应器中对CEH三段漂白废水进行了光催化降解研究。以CODCr为评价指标，考察了催化剂用量、体系pH值、光催化降解时间及通氧方式等对降解CEH废水的影响因素。结果表明，TiO2投加量、光催化降解时间、体系pH值以及通氧对CODCr的去除影响显著。当TiO2用量为1．0s／L、初始pH值4．0、连续通气条件下降解效果最佳，光催化降解4h后，CEH漂白废水中CODCr去除率可达84．8％。

简介：Mesoporoustitania(meso-TiO2)由于它的万用的潜在的应用收到了广泛的注意。这份报纸用peroxo为meso-TiO2的制造报导一条低温度的templating途径巨人的酸(PTA)大音阶的第五音作为先锋和PluronicP123作为nonionic模板。TGA，XRD，N2吸着，FE-SEM和HRTEM被用来描绘获得的样品。结果与高表面区域显示出那meso-TiO2直到163m2汣獥??坍乃吗？？

简介：Formicacidphotodegradationisoneofthemostimportantreactionsinorganicpollutioncontrol,andhelpstoimprovethehydrogengenerationefficiencyintitaniumdioxidecatalyzedwaterphotodecomposition.BasedondensityfunctionaltheoryandReaxFFmoleculardynamics,theadsorption,diffusionandactivationofformicacidonthedifferentanataseTiO2（101）,（001）,（010）surfacesareinvestigated.TheresultshowsthattheadsorptionofCOOHonanataseTiO2surfaceshrinkstheenergygapbetweenthedehydrogenationintermediateCOOHandHCOO.OntheanataseTiO2（101）surface,theformicacidbreakstheO–Hbondatthefirststepwithactivationenergy0.24eV,andtheconsequentbreakofα-Hbecomemucheasierwithactivationenergy0.77eV.Thedissociationofα-HisthedeterminationstepoftheHCOOHdecomposition.

简介：WehaveexploitedagreenapproachtopreparelayeredtitanateNa2-xHxTi2O5·H2OnanosheetarraysonFTOsubstratebyhydrothermalhydrolysisoftitanium(IV)isopropoxide(TTIP)withaidsofNa2EDTAandTEOAasco-coordinationagents,whichwerethentreatedbyHNO3toreplaceNa+byH+,followedbyacalcinationat450℃totopotacticallytransformintoanataseTiO2nanosheetarrays.SEM,TEM,XRD,andRamanspectroscopyhavebeenemployedtocharacterizethenanosheetfilms.TheTiO2nanosheetarrayswerefurtherappliedaselectrontransportmaterialsofCH3NH3PbI3perovskitesolarcells,achievingpowerconversionefficiencyof6.99%.

简介：然而，锐钛矿二氧化钛是活跃光催化剂在底层上被使不能调动是困难的。水晶的TiO_2多孔的电影被阳极氧化在纯钛的表面上直接准备。这部电影然后经由甲基橙降级方法为光催化被使用。光催化剂上的阳极化电压，酸碱值价值，TiO_2电影区域和降级时间的效果被紫外可见的光谱分别地调查。阳极氧化在140V准备的TiO_2电影有最好的光催化能力，甲基橙的降级与酸增加被加速，这被显示。

简介：目前烟气脱硫技术的反应原理多数为化学反应.本文采用一种新型脱硫剂,即用超细TiO2粉末经过低温烧结和表面活化制得的高孔隙率,高比表面积的TiO2颗粒,进行烟气脱硫的试验研究,其脱硫机理主要是物理吸附.在不同吸附温度下,对4种TiO2颗粒吸附剂在固定床中进行了动态脱硫试验.试验结果表明,该吸附剂的脱硫能力主要与以下3个因素有关:TiO2粒子的品质,吸附温度以及烟气中SO2的浓度.TiO2具有较好的吸附性能和工业应用前景.烧结温度在440～540℃之间时,吸附剂的晶态形成有利于其吸附性能的提高,试验最佳吸附温度为120℃.

简介：Inthisarticle,low-pressurecontrolmethodsforacombinedarcsubmergednanoparticlesynthesissystem(ASNSS)wasproposedanddevelopedforTiO2nanoparticlefabrication.Thephotocatalyticreactioniscarriedoutinaphotochemicalreactor.TheUVlightisobtainedfromUV-lampswithwavelengthof(253.7±0.8)nm.TheUV-Visspectrometryisusedtomonitortheabsorbancespectraofmethyleneblueasafunctionofilluminationtime.ExperimentalresultsshowthattherateconstantofphotocatalyticreactionofTiO2nanoparticlesformethyleneblueis0.0365min^-1.Thesurfaceadsorptionplaysanimportantroleinthedecompositionofmethyleneblue.ExperimentalresultsindicatethattheTiO2nanoparticlefluidpossessesexcellentphotocatalyticactivityinphotodegradationofmethyleneblue.

简介：在这个工作，有大约100nm和一段几测微计的一致直径的TiO2nanorods被大音阶的第五音胶化模板方法成功地准备。另外，准备的beeninvestigated.The取样的TiO2的形态学和nanorods有的结构上的先锋的臼齿的比率的影响被Fourier变换描绘红外线的光谱学(FTIR)，X光检查衍射(XRD)和扫描电子显微镜学(SEM)。XRD结果显示TiO2nanorods在锐钛矿和金红石阶段被使结晶，在退火到直到2h的400-700°C以后。

简介：AnewsupportedamorphouscatalystCoP/TiO2waspreparedbychemicalreductionandcharacterizedbyICP,XRD,TEM,BETandDSC.ItsapplicationindecomposingPH3tohighpurityphosphoranditscatalyticactivitywerestudied.Thedecompositionrateisover95%at450℃.Forcomparison,unsupportedCoPamorphouscatalystwaspreparedbythesamemethod.TheresultsuggeststhatCoP/TiO2exhibitshigherthermalstabilityandcatalyticactivitythanCoP,whichisattributedtothehighdispersionofCoPalloyparticlesonthesupport-TiO2.

简介：摘要目的探讨两种晶型纳米TiO2对家兔肺表面活性物质（PS）的影响。方法家兔采用一次性非暴露式气管内注入浓度为（20ml.kg-1.bw-1）的两种晶型纳米TiO2、微米TiO2后,饲养20天处死。采用家兔支气管灌洗技术，测定肺泡灌洗液的表面张力系数（α）。结论从实验结果看出两种晶型的纳米TiO2对肺表面活性物质（PS）的作用截然不同。金红石纳米TiO2有可能损害PS的形成，进而抑制PS的活性或加速其破坏，这些导致肺泡灌洗液的表面张力系数升高，从而引起肺部一些疾病的发生。

简介：采用逐层自组装方法，利用三乙烯四胺盐对纳米TiO2的吸附作用，把直径约20nm的TiO2颗粒逐层组装到聚偏氟乙烯（PVDF）膜表面，研究了纳米TiO2组装层数对PVDF改性膜接触角的影响，发现当组装层数为1和3时改性PVDF膜初始接触角略有增大，而随着冻结时间延长改性PVDF膜接触角显著减小。当组装层数为5时PVDF改性膜的初始接触角从101．2°显著减小到72．1°，并在1min内被水滴完全浸润，探讨了纳米TiO2组装PVDF改性膜微观结构对其亲水性能的影响机制。研究结果可用于发展分散均匀的高亲水性PVDF膜，提高PVDF膜的抗污染性能并延长其循环使用寿命。

简介：Aprocesssuitableforproductiononalargescaleofcoldlightmirrorforfilmprojectorisintroduced.DepositionparametersrequiredforproducingTiO2/SiO2opticalmultialyersystemsbyelectronbeamevaporationofTiO2andSiO2startingmaterialsareinvestigated.Manufactureandtechniquesofcoldmirrorandtheadhesion,stability,wearandcorrosionresistanceofcoldmirrorbythisprocessarediscussed.Theresultshowsthatcoldmirrorproducedhasgoodopticalpropertiesandbetteradhesion.

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简介：Thereisaneedtostandardizemethodsassociatedwiththedispersionofnanomaterialsinnano（eco）toxicologicalinvestigations.Thefirststeptowardthisgoalistounderstandthedegreeofvariabilitythatexistsinnanomaterialdispersionspreparedbyusingdifferentprotocols.Usingtwocasestudies,thedegreeofvariabilityinTiO2nanomaterialdispersionswasassessedbydifferentialcentrifugalsedimentation（DCS）methods.Casestudy1addressesthevariabilitythatarisesfromvariationswithinoneprotocol,investigatingtheeffectsofdispersionaging,sonicationexposuretime,sonicationinthepresence/absenceofanicebath,materialsubsampling,particleconcentrationandhavingapre-wettingstep.Casestudy2addressesthevariabilitybetweenfourdifferentprotocolsdevelopedthroughpastresearchactivitiesandprojects.Theresultsindicatethatthereisalargedegreeofvariability（relativestandarddeviation（RSD）ofmeanparticlediameter=26%）inthedispersionofTiO2nanomaterialsbetweenthefourdifferentprotocolsstudiedandthatseveralstepsinadispersionprotocolarepotentialsourcesofvariation,withfinalparticleconcentrationbeingthemostsignificant.Theimplicationofthisstudyisclear:forthepurposeofdatacomparability,thereisaneedtoprovidetheexactdetailsofallstepsinvolvedinadispersionprotocol.

简介：TheTiO2nanomembranedopedbyREionswerepreparedbymixingREionsintoTiO2solutionandthephoto-catalyticpropertiesofthecoatingglasswithTiO2membranedopedbyREionstomethylbenzenedegradationunderultravioletwereinvestigated.AFMphotoesshowthatthesurfaceofcoatingglasswithTiO2nanomembranedopedbyCe3+,Ce4+,Y3+arecomposedofparticleswithdiametersof30～50nm.Theresearchesonphoto-catalyticpropertiesprovethatthesurfaceofcoatingglasswithTiO2nanomembranedopedbyREionspossessesgoodphotocatalyticpropertiesunderultravioletandthedegradationpercentsofmethylbenzenearemorethan90%whenthedegradationtimeisshorterthan160min.WhenthemoleratioofCe3+,Y3+,Ce4+toTiO2is0.002thedegradationpercentsofmethylbenzenearerespectively92.85%,91.87%and91.15%under254～365nmultravioletin50μg·ml-1methylbenzenesolution.ThephotocatalyticabilityofthesurfaceofcoatingglasswithTiO2nanomembranedopedbyCe3+underultraviolettodegrademethylbenzeneincreasesastheconcentrationsofREionsincreaseandtheiroptimumpercentageofdegradationare98.50%,97.50%and96.35.5%respectively.Thehighertheconcentrationofmethylbenzenesolutionthelowerthepercentsofthemethylbenzenedegradationofthecoatingglassare,andthebiggertheratiooftheareasofcoatingglasstothevolumeofmethylbenzenesolutionthehigherthedegradationeffectofmethylbenzeneis.

简介：介绍了TiO2光催化纺织品的概念、制备方法及其性能,针对其产品质量参差不齐、无依据管控的现状,呼吁建立完善的评价标准体系,加强对这类产品的监管.

简介：用常压气相沉积法镀膜制得的二氧化钛薄膜为催化剂，以紫外灯为光源，研究了亚甲基蓝的光催化降解。实验表明：镀膜时基片温度为２００℃；用铜线作为底物，在染料溶液中加Ｈ２Ｏ２，可提高光催化活性。更多还原