Ultrasonic-assisted synthesis of core–shell structure CePO4:Tb/GdPO4 and GdPO4/CePO4:Tb nanophosphors and their photoluminescence properties

2013 ◽  
Vol 266 ◽  
pp. 22-26 ◽  
Author(s):  
Yao-yao Fan ◽  
Zong-chao Hu ◽  
Jian Yang ◽  
Chao Zhang ◽  
Ling Zhu
Keyword(s):  
Shell Structure ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
Ultrasonic Assisted ◽  
Core Shell Structure

Facile Synthesis and Properties of Bifunctional Magnetic-Optical Fe3O4@ZnS Nanocomposites with Core-Shell Structure

2013 ◽  
Vol 320 ◽  
pp. 92-98 ◽  
Author(s):  
Dan Zhang ◽  
Guan Hua Gao ◽  
Wei Ma ◽  
Jian Yu Zhu ◽  
Guan Zhou Qiu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Zinc Sulfide ◽  
Shell Structure ◽  
Luminescent Properties ◽  
Average Diameter ◽  
Phase Method ◽  
Core Shell ◽  
X Ray ◽  
Ultrasonic Assisted ◽  
Core Shell Structure

Solvothermal synthesized monodisperse Fe3O4nanoparticles have been encapsulated with zinc sulfide shell through a simple ultrasonic-assisted aqueous-phase method under ambient environment. The monodisperse magnetic cores with average diameter of 180 nm were coated with zinc sulfide shelles (20~60 nm), in order to achieve a core-shell structure with both magnetic and luminescent properties. Structure, morphology and size of products were investigated in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The results display that the Fe3O4cores have been coated with ZnS shells Magnetic and optical properties of the nanocomposites were measured with vibrating sample magnetometer (VSM) and photoluminescence (PL) spectroscopy. Magnetic study reveals reduction of the saturation magnetization (Ms) for Fe3O4@ZnS nanocomposites compared with uncoated Fe3O4nanoparticles. Room temperature PL spectrum of the Fe3O4@ZnS samples shows two emission bands occurred at 389 and 292 nm, respectively. The bifunctional magentic-Optical materials can be used in biomedicine. Keywords: Fe3O4; ZnS; core-shell structure; nanocomposites

Facile one-step synthesis and photoluminescence properties of Ag–ZnO core–shell structure

2014 ◽  
Vol 600 ◽  
pp. 146-150 ◽  
Author(s):  
HongJu Zhai ◽  
LiJing Wang ◽  
DongLai Han ◽  
Huan Wang ◽  
Jian Wang ◽  
...  
Keyword(s):  
Shell Structure ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
One Step ◽  
Core Shell Structure

Impacts of core shell structure on structural and photoluminescence properties of CaTiO3:Sm3+, Li+ nanoparticles for solid state display applications

2019 ◽  
Vol 6 (8) ◽  
pp. 085037 ◽  
Author(s):  
Vijaya V Shanbhag ◽  
S C Prashantha ◽  
H Nagabhushana ◽  
D M Jnaneshwara ◽  
N Basavaraju ◽  
...  
Keyword(s):  
Solid State ◽  
Shell Structure ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
Core Shell Structure

Preparation and Optical Properties of Carbon Fiber/ZnO Core-Shell Structure by a Simple Method

2012 ◽  
Vol 557-559 ◽  
pp. 236-239
Author(s):  
Rong Hui Wei ◽  
Kai Du ◽  
Xiao Yang Gong ◽  
Qing Dong Chen ◽  
Hai Bin Yang
Keyword(s):  
Carbon Fiber ◽  
Shell Structure ◽  
Oxygen Vacancies ◽  
Green Emission ◽  
Precipitation Process ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
Simple Method ◽  
Green Emission Peak ◽  
Core Shell Structure

A core-shell structure material, carbon fiber/ZnO was prepared by a surface modification precipitation process in aqueous solution. The structure, absorptive properties and photoluminescence properties of the composites were investigated. Results showed that the energy bandgap of samples calculated from the absorptive spectra was about 3.30eV. The green emission peak of the samples was ascribed to the oxygen vacancies.

Sign in / Sign up

Export Citation Format

Share Document