摘要
以NaVO3、Zn(NO3)2·6H2O为原料,采用水热法合成了铕离子掺杂Zn2(OH)3VO3纳米晶体。运用X射线粉末衍射、扫描电子显微镜、荧光测试仪对纳米晶进行了表征,研究了水乙醇体系不同pH值对产物晶相、微观形貌及荧光性能的影响。在溶剂体系pH值为7~10时,得到片状的Zn2(OH)3VO3,而在pH值为4~6和11~12时得到Zn3(OH)2V2O7·2H2O,表明强酸性和强碱性的溶剂体系都不太适合Zn2(OH)3VO3的合成,而最佳的合成体系为中性偏碱性;荧光测试表明在pH=10的水乙醇体系下合成的Zn2(OH)3VO3∶8%Eu3+纳米片的荧光性能最好,其中发射主峰位于612nm处。
The nanoerystals of Zn2 （OH）aVO3 Eu3＋ were successfully obtained via the hydrothermal method using NaVO3 and Zn（NOa ）2· 6H20 as the original materials. The nanocrystals were characterized by X-ray powder diffractometer （XRD）, scanning electron microscope （SEM） and fluorescence spectrometer （PL）. The effects of pH values in water ethanol system on crystalline phase, morphologies and the luminescence properties of nanocrystals were investigated. Zn2 （OH）3VO3 nanoerystals in the shape of sheets were synthesized at the pH values between 7 and 10,while Zru （OH）2V207 · 2H20 nanoerystals were obtained at pH values range from 4 to 6 and from 11 to 12. The results showed that neither a strong acid nor a strong alkaline solvent system was suitable for the synthesis of Znz- （OH）3 VO3. The optimal synthesis solvent system was neutral and slightly alkaline solution. The fluorescence testing results indicated that the Zn2 （OH）3 VO3 3： 8%Eu3＋ nanosheets synthesized at the pH value of 9 had the best fluores- cence properties and the emission peak was located at 612 nm.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2015年第10期14-17,共4页
Materials Reports
基金
辽宁省教育厅创新团队项目(LT2012020)
关键词
钒酸锌
水热合成法
pH值
Eu3+掺杂量
发光性能
Zn2 （OH）aVOa, hydrothermal synthesis, pH value, doping amount of Eua＋ , luminescence pro-perties
