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Core-shell BaMoO4@SiO2 nanospheres: Preparation, characterization, and optical properties

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Indexed by:期刊论文

First Author:Wang, Jiasheng

Correspondence Author:Lu, RW (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China.

Co-author:Li, Xin,Luo, Limei,Zhang, Shufen,Lu, Rongwen

Date of Publication:2013-12-01


Included Journals:SCIE、EI、Scopus



Page Number:9293-9298

ISSN No.:0272-8842

Key Words:Powders: chemical preparation; Nanocomposites; Optical properties; SiO2

Abstract:Core shell BaMoO4@SiO2 nanospheres were prepared in reverse microemulsions and exhibited enhanced photoluminescence (PL) intensity as compared to that of the uncoated BaMoO4. Characterization was performed using transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), and X-ray powder diffraction (XRD). It was found that the silica shell could increase the PL intensity, but the shell is not the thicker the better. The PL emission can be decomposed into three individual Gaussian components: two UV emissions at 308 nm and 369 nm and a visible emission at 448 nm. Such short emission wavelengths can be attributed to quantum size effect of the small BaMoO4 cores (similar to 16 nm). (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Date of Publication:2013-12-01

Jiasheng Wang

Gender:Male Alma Mater:大连理工大学 Degree:Doctoral Degree School/Department:化工学院盘锦分院 Business Address:大连理工大学盘锦D01-309 E-Mail:jswang@dlut.edu.cn