摘要
以1-乙基-3-甲基咪唑四氟硼酸盐离子液体和水的混合液作为反应溶剂,采用油浴锅加热合成了ZnS:Cu纳米晶。分别利用XRD、TEM、荧光光谱仪对其物相、形貌及光学性能进行研究。结果表明:ZnS:Cu纳米晶为立方相闪锌矿结构,平均粒度为25 nm左右。随着反应温度的增加,其荧光强度先增加后降低,在200℃时,ZnS:Cu纳米晶荧光强度最强。随着Cu离子质量分数的增加其荧光强度先增加后降低,当Cu离子质量分数达到2%时,荧光强度达到最强。
ZnS：Cu nanocrystals are synthesized with 1-ethyl-3-methylimidazolium ionic liquids and water mixture as the reaction solvent by oil bath heating method.The phase,size and luminescent properties of the nanocrystals are characterized by X-ray diffraction （XRD）,transmission electron microscopy （TEM） and fluorescence photometer.The results show that ZnS：Cu nanocrystals are about 25 nm and have a cubic zinc blende crystal structure.As the reaction temperature increases,the fluorescence intensity increases and then decreases.ZnS：Cu nanocrystals have the strongest luminescent performance at 200℃.Increasing Cu ion concentration,the fluorescence intensity increases and then decreases as well.ZnS：Cu nanocrystals have the strongest luminescent performance when Cu ions doping amount is 2％.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第2期82-84,共3页
Modern Chemical Industry
基金
河南省教育厅重点项目(13A430236)
河南省国际科技合作计划(0346620012)
河南科技大学青年基金资助项目(13000850)
关键词
ZNS
CU
纳米晶
离子液体
荧光性能
ZnS：Cu
nanocrystals
ionic liquids
fluorescence property
