一种多季胺阳离子诱导Bi_2WO_6片状团簇微球的合成及光致发光特性  

A Multi-quaternary Ammonium Induced Synthesis of Bi_2WO_6 Sheet-Like Cluster Microspheres and Photoluminescence Properties

作　　者：魏霞[1,2] 周元林[1,2] 李银涛[1,2] 程亚非[1,2] 

机构地区：[1]西南科技大学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,绵阳621010 [2]西南科技大学材料科学与工程学院,绵阳621010

出　　处：《无机化学学报》2013年第3期583-588,共6页Chinese Journal of Inorganic Chemistry

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(No.11176026)资助项目

摘　　要：以一种实验室自合成的双子季铵盐为表面活性剂,采用水热法,通过调节pH值,制备出由Bi2WO6纳米片自组装而成的不同片状团簇微球。研究了不同Bi2WO6片状团簇微球的物相结构、成分、晶体形貌和光致发光特性,探讨了其可能的生长机理。结果表明,在这种多季胺阳离子作用下,pH值对Bi2WO6片状团簇微球的物相、形貌和光致发光性能有明显的影响,随着pH值的增大,Bi2WO6片状团簇微球在(131)晶面处呈现明显的择优取向生长,在pH=5时,Bi2WO6微球可达到最大的发光强度。By using a Gemini quaternary ammonium as surfactant synthesized in laboratory and adjusting the different pH values, in this study, using the hydrothermal method, the different sheet-like cluster microspheres was self-assembled by Bi2WO6 nano-sheets. This study analyzed and characterized the effect of pH value on synthesis of Bi2WO6 sheet-like cluster microspheres, phase structure, composition, crystal morphology and photoluminescence properties, and explore its possible growth mechanism. The results show that different pH values caused a significant impact in Bi2WO6 sheet-like cluster microspheres phase structure, morphology and photoluminescence properties, when A multi-quaternary ammonium cationic dispersant as structure directing agents in the growth stage of Bi2WO6 Microspheres. With the increasing of pH value, sheet- like clusters Bi2WO6 microspheres showed obvious trend growth in the （131） direction, when pH=5, Bi2WO6 microspheres can reach a maximum luminous intensity.

关 键 词：Bi2WO6 水热法 团簇微球 pH值 光致发光 

分 类 号：O734.3[理学—晶体学]