Fabrication and Broadband Upconversion Luminescence of Au@TiO2:Yb, Er Core-Shell Nanostructures

2019 ◽  
Vol 48 (7) ◽  
pp. 651-653 ◽  
Author(s):  
Junwei Zhao ◽  
Jili Li ◽  
Yujiang Wang ◽  
Weihai Ni
Keyword(s):  
Upconversion Luminescence ◽  
Core Shell ◽  
Shell Nanostructures

Tuning epitaxial growth on NaYbF4 upconversion nanoparticles by strain management

Nanoscale ◽  
2020 ◽  
Vol 12 (26) ◽  
pp. 13973-13979 ◽  
Author(s):  
Jianxiong Zhao ◽  
Bing Chen ◽  
Xian Chen ◽  
Xin Zhang ◽  
Tianying Sun ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Surface Coverage ◽  
Strain Relaxation ◽  
Upconversion Luminescence ◽  
Shell Growth ◽  
High Surface ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Shell Nanostructures ◽  
Core Nanoparticles

The Strain relaxation of rod-like core nanoparticles promotes shell growth with high surface coverage. The resulting core–shell nanostructures show strong multiphoton upconversion luminescence and superior magnetic resonance T1 ionic relaxivity.

Effects of Yb3+in Shell on Temperature Dependent Upconversion Luminescence of NaYF4∶Yb3+,Er3+@NaYF4∶x%Yb3+Core/Shell Nanostructures

2015 ◽  
Vol 36 (12) ◽  
pp. 1390-1395
Author(s):  
谢 轩 XIE Xuan ◽  
吴 飞 WU Fei ◽  
李齐清 LI Qi-qing ◽  
薛 彬 XUE Bin ◽  
孔祥贵 KONG Xiang-gui
Keyword(s):  
Upconversion Luminescence ◽  
Core Shell ◽  
Temperature Dependent ◽  
Shell Nanostructures

scholarly journals Iron Based Core-Shell Structures as Versatile Materials: Magnetic Support and Solid Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 72
Author(s):  
Christian Zambrzycki ◽  
Runbang Shao ◽  
Archismita Misra ◽  
Carsten Streb ◽  
Ulrich Herr ◽  
...  
Keyword(s):  
Water Purification ◽  
Functional Materials ◽  
Core Material ◽  
Solid Catalyst ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
The Core ◽  
Shell Nanostructures ◽  
Sio2 Shell ◽  
Iron Based

Core-shell materials are promising functional materials for fundamental research and industrial application, as their properties can be adapted for specific applications. In particular, particles featuring iron or iron oxide as core material are relevant since they combine magnetic and catalytic properties. The addition of an SiO2 shell around the core particles introduces additional design aspects, such as a pore structure and surface functionalization. Herein, we describe the synthesis and application of iron-based core-shell nanoparticles for two different fields of research that is heterogeneous catalysis and water purification. The iron-based core shell materials were characterized by transmission electron microscopy, as well as N2-physisorption, X-ray diffraction, and vibrating-sample magnetometer measurements in order to correlate their properties with the performance in the target applications. Investigations of these materials in CO2 hydrogenation and water purification show their versatility and applicability in different fields of research and application, after suitable individual functionalization of the core-shell precursor. For design and application of magnetically separable particles, the SiO2 shell is surface-functionalized with an ionic liquid in order to bind water pollutants selectively. The core requires no functionalization, as it provides suitable magnetic properties in the as-made state. For catalytic application in synthesis gas reactions, the SiO2-stabilized core nanoparticles are reductively functionalized to provide the catalytically active metallic iron sites. Therefore, Fe@SiO2 core-shell nanostructures are shown to provide platform materials for various fields of application, after a specific functionalization.

Linear diameter dependence magnetization of Fe-CoNi core-shell nanostructures

2021 ◽  
pp. 168164
Author(s):  
S. Parajuli ◽  
J.F. Feng ◽  
M. Irfan ◽  
C. Cheng ◽  
X.M. Zhang ◽  
...  
Keyword(s):  
Core Shell ◽  
Shell Nanostructures ◽  
Linear Diameter

Nonlinear optical behavior of Au@Ag core- shell nanostructures

2021 ◽  
pp. 115935
Author(s):  
E. Shiju ◽  
T. Abhijith ◽  
D. Narayana Rao ◽  
K. Chandrasekharan
Keyword(s):  
Nonlinear Optical ◽  
Core Shell ◽  
Shell Nanostructures ◽  
Optical Behavior

Electromagnetic response of SiO2@Fe3O4 core shell nanostructures in the THz regime

2021 ◽  
pp. 1-1
Author(s):  
Arka Chaudhuri ◽  
Rupali Rakshit ◽  
Kazunori Serita ◽  
Masayoshi Tonouchi ◽  
Kalyan Mandal
Keyword(s):  
Electromagnetic Response ◽  
Core Shell ◽  
Shell Nanostructures ◽  
Fe3o4 Core
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