综合化学实验中ZnWO4蓝色荧光粉制备实验条件探讨  

Exploration of preparation conditions of ZnWO4 blue-emitting phosphors in comprehensive chemistry experiment

作　　者：翟永清[1] 王献玲[1] 王振光 王静[1] 马海云[1] 贾光[1] 吴智磊 ZHAI Yongqing;WANG Xianling;WANG Zhenguang;WANG Jing;MA Haiyun;JIA Guang;WU Zhilei(College of Chemistry and Environmental Science,Hebei University,Baoding 071002,China)

机构地区：[1]河北大学化学与环境科学学院,河北保定071002

出　　处：《实验技术与管理》2020年第2期37-40,共4页Experimental Technology and Management

基　　金：国家自然科学基金资助项目(21804030);河北大学科研成果转化为教学资源资助项目(KYZJX18135).

摘　　要：以Na2WO4·2H2O和Zn(NO3)2·6H2O为原料,采用微波水热法快速合成Zn WO4蓝色荧光粉。通过探讨反应体系p H值、水热反应温度时间等对产物物相结构、结晶度以及发光性能的影响,综合比较判断确定了Zn WO4制备实验的最佳条件:p H值为8、水热反应温度为180℃、水热反应时间为2 h。在此条件下,所得样品的相纯度高、结晶度高,发光强度大,而且实验可操作性强,成功率为100%,Zn WO4的产率均在90%以上。该实验有利于提升学生的实验技能,培养学生的创新思维。With Na2WO4·2H2O and Zn(NO3)2·6H2O as raw materials,the Zn WO4 blue phosphor is synthesized by the microwave hydrothermal method.The effects of p H value of reaction system and hydrothermal reaction temperature and time on the phase structure,crystallinity and luminescent properties of the product are discussed,and the best conditions for the preparation of Zn WO4 are determined by comprehensive comparison,in which p H value is 8,hydrothermal reaction temperature is 180℃and hydrothermal reaction time is 2 h.Under such conditions,the phase purity,crystallinity and luminescent intensity of the samples are high and the experimental operability is strong.The success rate is 100%,and the yield of Zn WO4 is above 90%.The experiment is conducive to improving students’experimental skills and cultivating their innovative thinking.

关 键 词：综合化学实验 ZnWO4的制备 微波水热法 最佳条件 

分 类 号：G642.423[文化科学—高等教育学] TQ422-4[文化科学—教育学]