NaCl熔盐法制备ZnO片状纳米晶及其光学性能研究  

Synthesis and optical property of plate-like ZnO nanocrystals prepared by a NaCl molten salt method

作　　者：王文宝[1] 刘磊[2] 马云燕[2] 王文忠[2] 

机构地区：[1]兴义民族师范学院物理与工程技术学院,兴义562400 [2]中央民族大学理学院,北京100081

出　　处：《化工新型材料》2014年第6期135-137,共3页New Chemical Materials

基　　金：贵州省科学技术基金(黔科J字(2012)2325);黔西南州科技计划资助项目(2013-4)

摘　　要：通过在NaCl熔剂的液态环境中热分解商业2ZnCO3·3Zn(OH)2固体粉末,成功制备出ZnO片状纳米晶。用X射线粉末衍射和透射显微镜研究了所制备纳米晶的成分、晶相、形状和尺寸。采用室温光致发光技术研究了ZnO片状纳米晶的发光性能。研究表明:所制备的ZnO片状纳米晶在波长为486nm处发出强蓝光。通过透射电子显微镜技术对ZnO纳米晶形态的深入研究,深入分析了ZnO片状纳米晶的生长过程,提出了在NaCl液态环境中,ZnO片状纳米晶按奥斯瓦尔德熟化机制生长。A facile and simple strategy has been developed for the synthesis of plate-like ZnO nanocrystals by thermal decomposition of commercial 2ZnCO3· 3Zn（OH）2 powders in NaCl flux. The composition,phase,morphology and size of the as-prepared nanocrystals were characterized by XRD and TEM techniques. Photoluminescence property demonstrated that the nanocrystals exhibited a strong broad blue emission at 486 nm. On the basis of TEM investigations, the growth process of ZnO nanocrystais was discussed in detail. The plate-like ZnO nanoerystals grown hy Ostwald ripening mechanism was proposed.

关 键 词：ZNO 光学性能 二维纳米结构 熔剂热合成 

分 类 号：TB383.1[一般工业技术—材料科学与工程]