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[1]黄亨明,操林海,王剑,等.TiO2壳层包裹增强β-NaYF4:Yb3+,Er3+耐热性及上转换发光性能[J].南京工业大学学报(自然科学版),2016,38(01):1-6.[doi:10.3969/j.issn.1671-7627.2016.01.001]
 HUANG Hengming,CAO Linhai,WANG Jian,et al.Enhanced up-conversion emission and heat resistance of β-NaYF4:Yb3+,Er3+ core coated with TiO2 shell[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(01):1-6.[doi:10.3969/j.issn.1671-7627.2016.01.001]
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TiO2壳层包裹增强β-NaYF4:Yb3+,Er3+耐热性及上转换发光性能()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年01期
页码:
1-6
栏目:
出版日期:
2016-01-10

文章信息/Info

Title:
Enhanced up-conversion emission and heat resistance of β-NaYF4:Yb3+,Er3+ core coated with TiO2 shell
文章编号:
1671-7627(2016)01-0001-06
作者:
黄亨明操林海王剑倪亚茹陆春华许仲梓
南京工业大学 材料科学与工程学院 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
HUANG HengmingCAO LinhaiWANG JianNI YaruLU ChunhuaXU Zhongzi
State Key Laboratory of Materials-Oriented Chemical Engineering,College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
β-NaYF4 上转换 核壳结构 耐热性
Keywords:
β-NaYF4 up-conversion core-shell structure heat resistance
分类号:
TQ174
DOI:
10.3969/j.issn.1671-7627.2016.01.001
文献标志码:
A
摘要:
以体积比1:1的乙醇/水为溶剂,以聚乙烯吡咯烷酮(PVP)为表面活性剂,通过简单的一步溶剂热法在β-NaYF4:Yb3+,Er3+表面包裹一层TiO2,构筑β-NaYF4:Yb3+,Er3+@TiO2核壳结构上转换发光材料。采用X线衍射仪(XRD)、场发射扫描电镜(FESEM)、傅里叶变换红外光谱仪(FT-IR)、荧光光谱仪等测试手段对所制备样品的物相结构、形貌特征和发光性质进行研究。结果表明:微米β-NaYF4:Yb3+,Er3+晶粒表面成功包裹了一层TiO2,构筑了核壳结构。纯β-NaYF4:Yb3+,Er3+在热处理后上转换发光强度显著降低,而核壳结构材料经过600 ℃的高温热处理60 min,上转换发光强度显著提高,这主要得益于内核结晶质量的提高且表面缺陷浓度的降低。
Abstract:
The β-NaYF4:Yb3+,Er3+@TiO2 up-conversion material with core-shell structure was synthesized by a facile one-step solvent-thermal method.The TiO2 was coated on the surface of β-NaYF4:Yb3+,Er3+with polyvinyl pyrrolidone(PVP)as surface active agent in 1:1 ethanol/water solution(by volume).X-ray diffraction(XRD),field emission scanning electron microscopy(FESEM),Fourier transform infrared(FT-IR), and fluorescence spectrometer were used to characterize and study the phase,morphology and luminescent properties of as-prepared products.Results revealed that TiO2 was coated on β-NaYF4:Yb3+,Er3+ microcrystal with a core-shell structure.The as-prepared material was annealed at 600 ℃ for 60 min.Up-conversion luminescence intensity of β-NaYF4:Yb3+,Er3+ decreased while the core-shell structure material enhanced obviously after annealing treatment due to the improvement of crystalline quality and the decline of surface defects concentration on the protection of TiO2 shell.

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备注/Memo

备注/Memo:
收稿日期:2014-12-08
基金项目:江苏省高校自然科学研究重大项目(10KJA430016); 江苏省自然科学基金(BK20141459); 江苏高校优势学科建设工程
作者简介:黄亨明(1990—),男,江苏南京人,博士生,主要研究方向为光转换及光催化复合材料; 陆春华(联系人),教授,E-mail:chhlu@njtech.edu.cn.
引用本文:黄亨明,操林海,王剑,等.TiO2壳层包裹增强β-NaYF4:Yb3+,Er3+耐热性及上转换发光性能[J].南京工业大学学报(自然科学版),2016,38(1):1-6..
更新日期/Last Update: 2016-01-20