简介：IntroductionTungsten-copperalloypowdersareusedinmanyfieldsonaccountofthehighelectricandthermalconductivitiesofcopperandhighmeltingpointoftungsten.W-Cupowders,aspreparedconventionallybymeansofinfiltration,hasthedisadvantageofinhomogeneityinmicrostructure,andaredifficulttoworkwithaftersintering.

简介：W，N共同做TiO2nanoparticles被一个solgel方法综合。准备样品被X光检查衍射(XRD)描绘，域排放扫描电子显微镜学(FE-SEM)，传播电子显微镜学(TEM)，Fourier变换红外线的光谱学(英尺红外)，X光检查光电子光谱学(XPS)和弥漫的反射spectrophotometry(医生)。结果证明共同做的光催化剂是有22.5nm的最小的粒子尺寸的实质上一致的球形的粒子。比作未做的TiO2，N-TiO2和P-25，W的吸收边，N共同做转移到更长的波长的TiO2和它为在Xe灯(350W)下面的甲基橘子(瞬间)的降级的photocatalytic活动更高。

简介：WithTi(OBu)4asprecursor,andHAcascomplexingagent,pureandW-dopedTiO2gelatinswerepreparedbyasol-gelmethod.Duringtheprocessofgelformation,metalionsweredispersedintheporousTiO2matrix.Then,powdersofnano-TiO2andW-dopednano-TiO2werepreparedbydrying,grindingandheattreatmentatdifferenttemperatures.Thegrainsizeandstructureofthesamples,pureTiO2andW-doped,andtreatedatdifferenttemperatures,werestudiedbyX-raydiffraction(XRD),BeckmanCoulterSorptionAnalysisandTEM.Resultsshowedthat,withincreasingtemperature,theTiO2transformedfromanatasetorutileandthegrainsizeincreased.ThistransformationandgraingrowthofTiO2couldberetardedbydopingwithW.