不同形貌和晶相钨酸铅纳米材料的可控合成及光性能研究  

Controlled Synthesis of Various Morphologies and Phases of Lead Tungstate Nanomaterials and Study on Their Photoluminescence Properties

作　　者：赵书力[1,3] 关明云[1] 孙建华[1] 尚通明[1,2] 周全法[1,2] 庄严[1] 

机构地区：[1]江苏省贵金属深加工及应用重点建设实验室,江苏技术师范学院化学与环境工程学院,常州213001 [2]江苏省电子废弃物资源循环工程中心,常州213001 [3]常州大学化学化工学院,常州213001

出　　处：《无机化学学报》2011年第4期637-642,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家科技支撑计划项目(No.2008BAC4804);江苏省高校自然科学基金(No.08KJD150003);江苏省高校高新技术产业发展项目(No.JHB06-31)资助

摘　　要：以醋酸铅和钨酸钠为起始原料,只是简单改变起始原料的nW/nPb比即成功制备出不同形貌和晶相的PbWO4纳米材料。当起始原料nW/nPb比为1∶3,产物为单斜相PbWO4纳米线;nW/nPb比为1∶1时,产物为四方相枝状PbWO4;nW/nPb比为3∶2时,产物为四方相短棒状PbWO4。通过扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线粉末衍射(XRD)及能量散射仪(EDS)对产物的形貌、物质结构及成分进行了表征。提出了产物可能的形成机制。PbWO4纳米材料在紫外光激发下展现出强的蓝光发射。Using PbAc2 and Na2WO4 as starting materials,various morphologies and phases of PbWO4 nanomaterials were successfully synthesized by simply adjusting nW / nPb mole ratio at starting materials.When nW / nPb mole ratio is 1∶3,the product is nanowires with monoclinic phase;when nW / nPb mole ratio is 1∶1,the product is branch structure with tetragonal phase;when nW / nPb mole ratio is 3∶2,the product is nanorods with tetragonal phase.The morpholo-gies,phase structures and compositions of the products were characterized by scanning electron microscope（SEM）,transmission electron microscope（TEM）,X-ray powder diffraction（XRD） and energy dispersive X-ray spectroscopy（EDS）.The possible formation mechanism of the products was proposed.PbWO4 nonamaterials display intense blue emission under ultraviolet excitation.

关 键 词：钨酸铅 水热合成 相控制 光致发光 

分 类 号：TQ050.4[化学工程]