scholarly journals Structural and photoluminescence properties of tin oxide and tin oxide: C core–shell and alloy nanoparticles synthesised using gas phase technique

AIP Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 095321 ◽  
Author(s):  
Mehar Bhatnagar ◽  
Vishakha Kaushik ◽  
Akshey Kaushal ◽  
Mandeep Singh ◽  
Bodh Raj Mehta
Keyword(s):  
Gas Phase ◽  
Tin Oxide ◽  
Core Shell ◽  
Alloy Nanoparticles ◽  
Photoluminescence Properties

scholarly journals Energetic-Materials-Driven Synthesis of Graphene-Encapsulated Tin Oxide Nanoparticles for Sodium-Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2550
Author(s):  
Yingchun Wang ◽  
Jinxu Liu ◽  
Min Yang ◽  
Lijuan Hou ◽  
Tingting Xu ◽  
...  
Keyword(s):  
Tin Oxide ◽  
Energetic Materials ◽  
High Speed ◽  
Coulombic Efficiency ◽  
Sno2 Nanoparticles ◽  
Direct Synthesis ◽  
Exothermic Reaction ◽  
Rate Capability ◽  
Rapid Expansion ◽  
Core Shell

By evenly mixing polytetrafluoroethylene-silicon energetic materials (PTFE-Si EMs) with tin oxide (SnO2) particles, we demonstrate a direct synthesis of graphene-encapsulated SnO2 (Gr-SnO2) nanoparticles through the self-propagated exothermic reaction of the EMs. The highly exothermic reaction of the PTFE-Si EMs released a huge amount of heat that induced an instantaneous temperature rise at the reaction zone, and the rapid expansion of the gaseous SiF4 product provided a high-speed gas flow for dispersing the molten particles into finer nanoscale particles. Furthermore, the reaction of the PTFE-NPs with Si resulted in a simultaneous synthesis of graphene that encapsulated the SnO2 nanoparticles in order to form the core-shell nanostructure. As sodium storage material, the graphene-encapsulated SnO2 nanoparticles exhibit a good cycling performance, superior rate capability, and a high initial Coulombic efficiency of 85.3%. This proves the effectiveness of our approach for the scalable synthesis of core-shell-structured graphene-encapsulated nanomaterials.

The Emission Property of Phosphors LEDs Based on ZnCuInS/ZnSe/ZnS Quantum Dots

2014 ◽  
Vol 989-994 ◽  
pp. 623-625
Author(s):  
Ke Bi ◽  
Wen Yan Liu ◽  
Tian Yue Xu ◽  
Tie Qiang Zhang ◽  
Yu Zhang
Keyword(s):  
Quantum Dots ◽  
Photoluminescence Spectrum ◽  
Stokes Shift ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
Red Emission ◽  
Light Emitting ◽  
Quantum Size ◽  
Gan Led ◽  
Photoluminescence Peak

.In this research, ZnCuInS/ZnSe/ZnS quantum dots (QDs) have been studied as an excellent red emitting source for blue GaN LED because of its non-toxic deep red emmission, and large Stokes shift properties. In the paper ZnCuInS/ZnSe/ZnS core/shell quantum dots were prepared with the particle size of 4.5nm. According to the measurement of photoluminescence spectrum emitted by ZnCuInS/ZnSe/ZnS core/shell quantum dots, the emitting peak of 700 nm and the full was achieved as red emitter.It was found that absorption edge and photoluminescence peak shifted to shorter wavelength with decreasing the nanocrystal size due to quantum size effect.Meanwhile, we were prepared ZnCuInS/ZnSe/ZnS core/shell quantum dot light emitting diodes and their photoluminescence properties were studied. After the suitable bias was applied on the films, increasing the ZnCuInS/ZnSe/ZnS QDs concentration in the blue GaN chips, red emission increased with decreasing LED’s blue light.

Consistent characterization of the electronic ground state of Iron (II) Phthalocyanine from valence and core-shell electron spectroscopy

2021 ◽  
Author(s):  
Jonathan Laurent ◽  
John Bozek ◽  
Marc BRIANT ◽  
Pierre Carcabal ◽  
Denis Cubaynes ◽  
...  
Keyword(s):  
Gas Phase ◽  
Ground State ◽  
Electron Spectroscopy ◽  
Organometallic Compound ◽  
Electronic Ground State ◽  
Core Shell ◽  
Shell Electron ◽  
Phthalocyanine Molecule ◽  
Electronic Ground

We studied the Iron (II) Phthalocyanine molecule in the gas-phase. It is a complex transition organometallic compound, for which, the characterization of its electronic ground state is still debated more...

Continuous-Flow Syntheses of Alloy Nanoparticles

2021 ◽  
Author(s):  
Kohei Kusada ◽  
Hiroshi Kitagawa
Keyword(s):  
Solid Solution ◽  
Optical Properties ◽  
Continuous Flow ◽  
Core Shell ◽  
Alloy Nanoparticles ◽  
Wide Range

Alloy nanoparticles (NPs), including core-shell, segregated and solid-solution types, show a variety of attractive properties such as catalytic and optical properties and are used in a wide range of applications....

scholarly journals Structure and magnetic properties of Co/CoO and Co/Si core–shell cluster assemblies prepared via gas-phase

2005 ◽  
Vol 6 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Kenji Sumiyama ◽  
Takehiko Hihara ◽  
Dong Liang Peng ◽  
Ryoji Katoh
Keyword(s):  
Magnetic Properties ◽  
Gas Phase ◽  
Core Shell

The synergetic effect of h-BN shells and subsurface B in CoBx@h-BN nanocatalysts for enhanced oxygen evolution reactions

2018 ◽  
Vol 6 (23) ◽  
pp. 10644-10648 ◽  
Author(s):  
Siru Chen ◽  
Yanqiang Li ◽  
Zhihua Zhang ◽  
Qiang Fu ◽  
Xinhe Bao
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Synergetic Effect ◽  
Core Shell ◽  
Alloy Nanoparticles

CoBx@h-BN core–shell nanocatalysts were prepared via ammonization of Co–B alloy nanoparticles showing high activity and stability in oxygen evolution reactions.

Synthesis and photoluminescence properties of novel core–shell–shell SiO2@CePO4:Tb@SiO2 submicro-spheres

CrystEngComm ◽  
2018 ◽  
Vol 20 (40) ◽  
pp. 6351-6357 ◽  
Author(s):  
Kui-Suo Yang ◽  
Yi-Lian Li ◽  
Yang-Yang Ma ◽  
Li-Na Feng ◽  
An-Ping Wu ◽  
...  
Keyword(s):  
Low Cost ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
The Core

The low-cost preparation of the core–shell–shell SiO2@CePO4:Tb@SiO2 was achieved, and the biocompatibility was improved with the use of SiO2.

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