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.

Core–shell hybrid upconversion nanoparticles carrying stable nitroxide radicals as potential multifunctional nanoprobes for upconversion luminescence and magnetic resonance dual-modality imaging

Nanoscale ◽  
2015 ◽  
Vol 7 (12) ◽  
pp. 5249-5261 ◽  
Author(s):  
Chuan Chen ◽  
Ning Kang ◽  
Ting Xu ◽  
Dong Wang ◽  
Lei Ren ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Upconversion Luminescence ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Nitroxide Radicals ◽  
Dual Modality ◽  
Dual Modality Imaging ◽  
Stable Nitroxide

A nitroxide radicals doped SiO2 was coated on upconversion nanoparticles to generate novel UCNP@TEMPO@SiO2 nanoprobes for dual-modality imaging.

Decoration of upconversion nanoparticles@mSiO2 core–shell nanostructures with CdS nanocrystals for excellent infrared light triggered photocatalysis

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 54241-54248 ◽  
Author(s):  
Yao-Wu Li ◽  
Liang Dong ◽  
Chen-Xi Huang ◽  
Yan-Chuan Guo ◽  
Xian-Zhu Yang ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Photocatalytic Degradation ◽  
Infrared Light ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Cds Nanocrystals ◽  
Shell Nanostructures ◽  
Cds Nanostructures

Upconversion nanoparticles@mesoporous silica (mSiO2)/CdS nanostructures have been designed and fabricated for infrared light triggered photocatalytic degradation towards RhB dye.

Optical Temperature Sensing of Core-Shell Structured NaYF4:Yb3+, Er3+@NaYF4 Nanocrystals with Different Shell Thickness

2015 ◽  
Vol 738-739 ◽  
pp. 27-30
Author(s):  
Dong Dong Li ◽  
Qi Yue Shao ◽  
Yan Dong ◽  
Jian Qing Jiang
Keyword(s):  
Shell Thickness ◽  
Thermal Sensitivity ◽  
Upconversion Luminescence ◽  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Sensing Properties ◽  
The Core ◽  
Β Phase ◽  
Biomedical Fields

Hexagonal (β)-phase NaYF4:Yb3+, Er3+ upconversion nanoparticles (UCNPs) with and without an inert (undoped NaYF4) shell have been successfully synthesized and the effects of shell thickness on the upconversion luminescence (UCL) and temperature sensing properties were systematically investigated. It was found that the NaYF4 shell and its thickness do not affect the RHS values and thermal sensitivity, but can obviously improve the UCL intensity of NaYF4:Yb3+, Er3+ UCNPs. It implies that the core-shell structured NaYF4:Yb3+, Er3+@NaYF4 UCNPs with excellent UCL properties have great potential to be used as temperature sensing probes in biomedical fields, without considering the influences of the shell thickness on their temperature sensing properties.

scholarly journals Upconversion luminescence and temperature sensing properties of NaGd(WO4)2:Yb3+/Er3+@SiO2 core–shell nanoparticles

RSC Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 3981-3989
Author(s):  
Lu Zheng ◽  
Xinyi Huang ◽  
Jiuping Zhong ◽  
Zijun Wang ◽  
Xiaoning Cheng
Keyword(s):  
Upconversion Luminescence ◽  
Silica Shell ◽  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Sensing Properties ◽  
The Core ◽  
Thermal Sensing ◽  
Core Shell Nanoparticles

A shell of SiO2 with tunable thickness was uniformly coated on NaGd(WO4)2:Yb3+/Er3+ core upconversion nanoparticles (UCNPs). The effects of the silica shell on UC luminescence and thermal sensing properties of the core–shell UCNPs were investigated.

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

Surfactant free synthesis of high surface area Pt@PdM3 (M = Mn, Fe, Co, Ni, Cu) core/shell electrocatalysts with enhanced electrocatalytic activity and durability for PEM fuel cell applications

2016 ◽  
Vol 40 (10) ◽  
pp. 8681-8695 ◽  
Author(s):  
Karuppannan Mohanraju ◽  
Govindarajan Kousik ◽  
Louis Cindrella
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction ◽  
Surface Area ◽  
Electrocatalytic Activity ◽  
High Surface ◽  
High Surface Area ◽  
Pem Fuel Cell ◽  
Core Shell ◽  
Oxygen Reduction Reactions ◽  
Shell Nanostructures

High surface area core/shell nanostructures of Pt covered Pd alloys were synthesized and they exhibited enhanced electrocatalytic activity in oxygen reduction reactions.

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