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 |
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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。 |
关键词: 钨酸铅 水热合成 相控制 光致发光 |
基金项目: |
Abstract: 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. |
Keywords: lead tungstate hydrothermal synthesis phase control photoluminescence |
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赵书力,关明云,孙建华,尚通明,周全法,庄 严.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[J].无机化学学报,2011,27(4):637-642. |
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