Anomalous Temperature-Dependent Upconversion Luminescence of α-NaYF4:Yb3+/Er3+ Nanocrystals Synthesized by a Microwave-Assisted Hydrothermal Method

2016 ◽  
Vol 16 (1) ◽  
pp. 816-821 ◽  
Author(s):  
Lili Tong ◽  
Xiangping Li ◽  
Ruinian Hua ◽  
Tianxiang Peng ◽  
Yizhuo Wang ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Upconversion Luminescence ◽  
Temperature Dependent ◽  
Anomalous Temperature ◽  
Microwave Assisted

Anomalous Temperature-Dependent Upconversion Luminescence of Small-Sized NaYF4:Yb3+, Er3+ Nanoparticles

2014 ◽  
Vol 118 (39) ◽  
pp. 22807-22813 ◽  
Author(s):  
Dongdong Li ◽  
Qiyue Shao ◽  
Yan Dong ◽  
Jianqing Jiang
Keyword(s):  
Upconversion Luminescence ◽  
Temperature Dependent ◽  
Anomalous Temperature

Ultra Fast Hematite Preparation using a Microwave-Assisted Hydrothermal Method

2013 ◽  
Vol 3 (4) ◽  
pp. 477-484
Author(s):  
Arnayra Silva ◽  
Jefferson Andrade ◽  
Graziela Casali ◽  
Severino Lima ◽  
Elson Longo ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Microwave Assisted

Luminescent properties of Y(OH)3: Tb nanopowders synthesized by microwave-assisted hydrothermal method

2019 ◽  
Vol 21 (5) ◽  
Author(s):  
I. A. Garduño-Wilches ◽  
G. Alarcón-Flores ◽  
S. Carmona-Téllez ◽  
J. Guzmán ◽  
M. Aguilar-Frutis
Keyword(s):  
Hydrothermal Method ◽  
Luminescent Properties ◽  
Microwave Assisted

Insight into the mechanism of intense NIR-to-red upconversion luminescence in Er3+ doped and Er3+–Yb3+ co-doped SrF2 nanoparticles

2021 ◽  
Vol 45 (14) ◽  
pp. 6469-6478
Author(s):  
Qingling Zeng ◽  
Wenxiang He ◽  
Fangfei Luan ◽  
Yu Yan ◽  
Hongli Du ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Theoretical Basis ◽  
Upconversion Luminescence ◽  
Insight Into ◽  
Co Doped

SrF2:Yb3+,Er3+ NPs were synthesized by the hydrothermal method and their luminescence mechanism was discussed in detail, which provided a theoretical basis for further understanding the properties of the materials.

Simultaneous size adjustment and upconversion luminescence enhancement of β-NaLuF4:Yb3+/Er3+,Er3+/Tm3+ microcrystals by introducing Ca2+ for temperature sensing

CrystEngComm ◽  
2018 ◽  
Vol 20 (14) ◽  
pp. 2029-2035 ◽  
Author(s):  
Aihua Zhou ◽  
Feng Song ◽  
Yingdong Han ◽  
Feifei Song ◽  
Dandan Ju ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrothermal Method ◽  
Upconversion Luminescence ◽  
Temperature Sensing ◽  
Facile Hydrothermal Method ◽  
Luminescence Enhancement ◽  
Size Adjustment

β-NaLuF4:Yb3+/Er3+ microcrystals have been obtained through a facile hydrothermal method at a relatively low temperature (180 °C) within only two hours.

scholarly journals Microwave-Assisted vs. Conventional Hydrothermal Synthesis of MoS2 Nanosheets: Application towards Hydrogen Evolution Reaction

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1040 ◽  
Author(s):  
Getachew Solomon ◽  
Raffaello Mazzaro ◽  
Vittorio Morandi ◽  
Isabella Concina ◽  
Alberto Vomiero
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Crystal Morphology ◽  
Synthesis Method ◽  
Synthesis Methods ◽  
Mos2 Nanosheets ◽  
Microwave Assisted

Molybdenum sulfide (MoS2) has emerged as a promising catalyst for hydrogen evolution applications. The synthesis method mainly employed is a conventional hydrothermal method. This method requires a longer time compared to other methods such as microwave synthesis methods. There is a lack of comparison of the two synthesis methods in terms of crystal morphology and its electrochemical activities. In this work, MoS2 nanosheets are synthesized using both hydrothermal (HT-MoS2) and advanced microwave methods (MW-MoS2), their crystal morphology, and catalytical efficiency towards hydrogen evolution reaction (HER) were compared. MoS2 nanosheet is obtained using microwave-assisted synthesis in a very short time (30 min) compared to the 24 h hydrothermal synthesis method. Both methods produce thin and aggregated nanosheets. However, the nanosheets synthesized by the microwave method have a less crumpled structure and smoother edges compared to the hydrothermal method. The as-prepared nanosheets are tested and used as a catalyst for hydrogen evolution results in nearly similar electrocatalytic performance. Experimental results showed that: HT-MoS2 displays a current density of 10 mA/cm2 at overpotential (−280 mV) compared to MW-MoS2 which requires −320 mV to produce a similar current density, suggesting that the HT-MoS2 more active towards hydrogen evolutions reaction.

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