草酸根离子诱导PbWO_4有序纳米结构的合成和生长机理  

Oxalate-induced Synthesis and Growth Mechanism of PbWO_4 Ordered Nanostructures

作　　者：方义[1] 周元林[1] 熊鹰[1] 房刚[1] 

机构地区：[1]四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地西南科技大学,绵阳621010

出　　处：《材料研究学报》2010年第3期322-326,共5页Chinese Journal of Materials Research

基　　金：国家自然科学基金委员会-中国工程物理研究院联合基金10876033资助项目~~

摘　　要：采用直接沉淀法制备PbWO_4有序纳米结构,以草酸根双羧基阴离子为其生长阶段结构导向剂。使用X射线粉末衍射(XRD)、扫描电子显微镜(SEM)、红外光谱(IR)和透射电子显微镜(TEM)等手段对其表征,研究了草酸根离子在PbWO_4纳米晶生长阶段的控制作用,并提出了PbWO_4有序纳米结构的形成机理.Ordered PbWO_4 nanostructures were synthesized by a direct precipitation method,and the oxalate anions with double carboxyl were employed as structure-directing agents in the growth stage of PbWO_4 nanocrystals.The PbWO_4 nanostructures were characterized by X-ray power diffraction（XRD）, scanning electron microscopy（SEM）,infra-red spectrum（IR） and transmission electron microscopy（TEM）. The control role of the oxalate anions in the growth stage of PbWO_4 nanocrystals was investigated and formation mechanism of the ordered PDWO_4 nanocrystals was proposed.

关 键 词：无机非金属材料 钨酸铅 草酸根 控制合成 有序纳米结构 

分 类 号：O781[理学—晶体学]