反应时间对CaWO_4∶Eu~(3+)纳米晶形貌及发光性能影响

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英文篇名：Influence of the reaction time on the morphology and luminescence property of CaWO_4∶Eu~(3+) nanocrystal 作者：姜国庆 ; 刘连利 ; 潘婷婷 ; 孙妍 ; 马亚勇 英文作者：Jiang Guoqing;Liu Lianli;Pan Tingting;Sun Yan;Ma Yayong;College of Chemistry,Chemical Engineering and Food Safety,Bohai University;Experimental Management Centre,Bohai University; 关键词：反应时间 ; CaWO4 ; 纳米晶 ; 球形 ; 发光性能 ; 溶剂热 英文关键词：reaction time;;CaWO4;;nanocrystal;;sphericity;;luminescence property;;solvothermal method 中文刊名：HGXC 英文刊名：New Chemical Materials 机构：渤海大学化学化工学院;渤海大学实验管理中心; 出版日期：2017-04-15 出版单位：化工新型材料 年：2017 期：v.45;No.535 基金：国家自然科学基金项目(61575029);; 辽宁省教育厅创新团队项目(LT2012020) 语种：中文; 页：HGXC201704053 页数：3 CN：04 ISSN：11-2357/TQ 分类号：160-161+164

摘要

采用溶剂热法,以钨酸钠(Na_2WO_4·2H_2O)和氯化钙(CaCl_2)为原料,在V(醇)∶V(水)=3∶1,十二烷基磺酸钠(SDS)摩尔分数为1%,pH=7,180℃下,制备出了四方晶系结构的球形铕掺杂钨酸钙(CaWO_4∶Eu~(3+))纳米晶。通过X射线衍射(XRD)、扫描电镜(SEM)及荧光光谱(PL)对不同条件下制备出的产物的物相、形貌以及荧光性质进行表征,探讨了反应时间对产物形貌及发光性能的影响。结果表明,在不同反应时间下合成出了不同形貌的CaWO_4∶Eu~(3+)纳米晶。从荧光发射光谱可以看出,反应时间为24h的体系下合成出的球形CaWO_4∶Eu~(3+)纳米晶在393nm激发下于612nm处有强发射峰。由此,反应时间对CaWO_4∶Eu~(3+)纳米晶的物相和形貌及发光性能起到重要作用。
        Using Na_2WO_4·2H_2O and CaCl_2 as the raw materials,spherical CaWO_4∶Eu~(3+)nanocrystals with tetragonal structure were synthesized by solvothermal method with an ethanol/water volume ratio of 3∶1,the SDS quality percentage concentration of 1%,at 180℃and pH=7.The samples obtained at different synthesis conditions were characterized by XRD,SEM and PL for tested their phases,morphologies and luminescent properties.The effect of reaction time on the morphology and luminescence property was discussed.The results showed that CaWO_4∶Eu~(3+)nanocrystals with different morphologies were synthesized at different reaction time.The emission spectra indicated that the hollow spherical CaWO_4∶Eu~(3+)nanocrystals obtained at the reaction time of 24 hhad a strong emission peak at 612 nm under the excitation number of 393 nm.Above all,the reaction time played an important role on the morphology and luminescent property of CaWO_4∶Eu~(3+)nanocrystals.

引文

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