| Gd_2O_2SO_4:Tb~(3+)纳米荧光粉的共沉淀合成及光致发光 |
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| 引用本文： | 黄婷,许广西,连景宝,吴念初,张雪,何娇.Gd_2O_2SO_4:Tb~(3+)纳米荧光粉的共沉淀合成及光致发光[J].有色金属工程,2019,9(6). |
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| 作者姓名： | 黄婷 许广西 连景宝 吴念初 张雪 何娇 |
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| 作者单位： | ;1.辽宁石油化工大学机械工程学院;2.辽宁石油化工大学新型功能材料实验室 |
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| 基金项目： | 国家级大学生创新创业训练计划项目(201710148000031)；辽宁省自然科学基金 (20170540582)；国家自然科学基金(51701090) |
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| 摘 要： | 以L-半胱氨酸为硫源,通过共沉淀法成功合成了Gd_2O_2SO_4∶Tb~(3+)纳米荧光粉。采用X射线衍射(XRD)、差热热重分析(DSC-TG)、傅里叶变换红外光谱仪(FTIR)、场发射扫描电子显微镜(FESEM)和光致发光(PL)光谱对产物的结构、形貌和发光性能进行表征。研究pH值、反应物的摩尔比和Tb~(3+)浓度对产物相组成、形貌和发光性能的影响。结果表明,当Gd~(3+)∶SO_4~(2-)=2∶3、pH=7.5时,合成的前驱体在800℃煅烧2h可获得单相Gd_2O_2SO_4纳米粉体。该粉体呈近球形,团聚较严重,平均粒径约为30nm。在230nm紫外光激发下,Gd_2O_2SO_4∶Tb~(3+)纳米荧光粉具有优异的发光性能,主发射峰位于544nm,归属于Tb~(3+)的~5 D_4→~7F_5跃迁。当Tb~(3+)浓度达到12%时,Gd_2O_2SO_4∶Tb~(3+)发光强度达到最大值。Gd_2O_2SO_4∶Tb~(3+)衰减过程符合双e指数衰减行为,对应的荧光寿命为τ1=0.177μs,τ2=0.119μs。
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| 关 键 词： | 硫酸氧化钆 纳米荧光粉 共沉淀法 光致发光 |
| 收稿时间： | 2018/7/10 0:00:00 |
| 修稿时间： | 2018/7/24 0:00:00 |
Synthesis and Photoluminescence of Gd2O2SO4:Tb3 Nanophosphors by Co-precipitation Method |
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| HUANG Ting,XU Guangxi,LIAN Jingbao,WU Nianchu,Zhang Xue and HE Jiao.Synthesis and Photoluminescence of Gd2O2SO4:Tb3 Nanophosphors by Co-precipitation Method[J].Nonferrous Metals Engineering,2019,9(6). |
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| Authors: | HUANG Ting XU Guangxi LIAN Jingbao WU Nianchu Zhang Xue and HE Jiao |
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| Affiliation: | School of Mechanical Engineering,Liaoning Shihua University,School of Mechanical Engineering,Liaoning Shihua University,School of Mechanical Engineering,Liaoning Shihua University,School of Mechanical Engineering,Liaoning Shihua University,School of Mechanical Engineering,Liaoning Shihua University,School of Mechanical Engineering,Liaoning Shihua University |
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| Abstract: | |
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| Keywords: | Gadolinium oxysulfate Nanophosphor Co-precipitation method Photoluminescence |
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