不同形貌的CaWO_4材料的微乳液法制备及其发光性能  

Preparation and photoluminescent properties of CaWO_4 with different morphologies via microemulsion method

作　　者：邢光建[1] 李钰梅[1] 李占略[1] 

机构地区：[1]北京石油化工学院材料科学与工程系,北京102617

出　　处：《化工进展》2010年第11期2114-2118,共5页Chemical Industry and Engineering Progress

基　　金：北京市教委面上项目(KM200910017004)

摘　　要：利用微乳液法合成出了不同形貌的CaWO4材料,利用XRD、FESEM和PL谱对样品的结构、形貌和光致发光性能进行了表征。通过改变微乳液体系中表面活性剂CTAB浓度得到了近球状、花球状及纺锤体状等结构的CaWO4材料。增加反应物的浓度和反应时间,CaWO4样品的体积有进一步增大的趋势。CaWO4样品的室温PL谱表明样品的发光峰位于410～430 nm内,不同形貌的CaWO4样品的发光峰位置和发光强度不同。CaWO4 with different morphologies were prepared with microemulsion route and characterized by XRD,FESEM and PL spectra.With careful control of the surfactant CTAB concentration in the microemulsion system,CaWO4 with quasisphere-like,flower ball-like and spindle-like morphologies were obtained,respectively.CaWO4 samples have a tendency to become larger in size with the increase in reactant concentration and reaction time.Room temperature PL spectra of the CaWO4 samples are peaked at 410—430 nm,the luminous intensity and peak position are different for samples with different morphology.

关 键 词：钨酸钙 微乳液 制备 形貌 发光 

分 类 号：O614.23[理学—无机化学]