Microwave-assisted hydrothermal synthesis, temperature quenching and laser-induced heating effect of hexagonal microplate β-NaYF4: Er3+/Yb3+ microcrystals under 1550 nm laser irradiation

2017 ◽  
Vol 246 ◽  
pp. 175-180 ◽  
Author(s):  
Lili Tong ◽  
Xiangping Li ◽  
Jinsu Zhang ◽  
Sai Xu ◽  
Jiashi Sun ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Laser Irradiation ◽  
Synthesis Temperature ◽  
Heating Effect ◽  
Temperature Quenching ◽  
Microwave Assisted

scholarly journals Microwave-assisted hydrothermal synthesis and laser-induced optical heating effect of NaY(WO_4)_2:Tm^3+/Yb^3+ microstructures

2014 ◽  
Vol 4 (9) ◽  
pp. 1966 ◽  
Author(s):  
Suyuan Xiang ◽  
Baojiu Chen ◽  
Jinsu Zhang ◽  
Xiangping Li ◽  
Jiashi Sun ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Heating Effect ◽  
Microwave Assisted ◽  
Optical Heating

Rapid microwave assisted hydrothermal synthesis cerium vanadate nanoparticle and its photocatalytic and antibacterial studies

2020 ◽  
Vol 137 ◽  
pp. 109211 ◽  
Author(s):  
S. Mishra ◽  
M. Priyadarshinee ◽  
A.K. Debnath ◽  
K.P. Muthe ◽  
B.C. Mallick ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Antibacterial Studies ◽  
Microwave Assisted ◽  
Cerium Vanadate

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.

Microwave Assisted Hydrothermal Synthesis and Structural Characterization of TiO2 Nanotubes

2015 ◽  
Vol 15 (9) ◽  
pp. 7391-7394 ◽  
Author(s):  
Sung Hun Cho ◽  
Rajesh Adhikari ◽  
Seung Ho Kim ◽  
Tae Ho Kim ◽  
Soo Wohn Lee
Keyword(s):  
Hydrothermal Synthesis ◽  
Structural Characterization ◽  
Tio2 Nanotubes ◽  
Microwave Assisted

Rapid microwave assisted hydrothermal synthesis of porous α-Fe2O3 nanostructures as stable and high capacity negative electrode for lithium and sodium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34761-34768 ◽  
Author(s):  
B. Nageswara Rao ◽  
P. Ramesh Kumar ◽  
O. Padmaraj ◽  
M. Venkateswarlu ◽  
N. Satyanarayana
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
High Capacity ◽  
Negative Electrode ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Base Catalyst ◽  
Microwave Assisted

Porous α-Fe2O3 nanostructures were developed in the presence of a base catalyst by a rapid microwave assisted hydrothermal method.

scholarly journals Microwave-assisted hydrothermal synthesis of Zn2SnO4 nanostructures for photocatalytic dye degradation

2020 ◽  
Author(s):  
Ana Rovisco ◽  
Pedro Barquinha ◽  
Rita Branquinho ◽  
Rodrigo Martins ◽  
Elvira Fortunato
Keyword(s):  
Hydrothermal Synthesis ◽  
Dye Degradation ◽  
Microwave Assisted ◽  
Photocatalytic Dye Degradation

Hydrothermal Synthesis of Bi1.5ZnNb1.5O7 Nanopowders

2007 ◽  
Vol 561-565 ◽  
pp. 495-498 ◽  
Author(s):  
Jin Liang Huang ◽  
Xiao Wang ◽  
Liu Shuan Yang ◽  
Chun Wei Cui ◽  
Xing Hua Yang
Keyword(s):  
Reaction Time ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Pyrochlore Phase ◽  
Synthesis Temperature ◽  
Minimum Size ◽  
Hydrothermal Reactions ◽  
Prolonged Reaction Time ◽  
Scherrer Equation ◽  
Xrd Patterns

The cubic pyrochlore phase Bi1.5ZnNb1.5O7 nanopowder was successfully synthesized by the hydrothermal method (HTM) from the starting materials: Bi(NO3)3·5H2O, ZnO, Nb2O5 and the mineralizer: KOH. The XRD patterns prove that the cubic pyrochlore phase Bi1.5ZnNb1.5O7 nanopowder can be obtained by HTM, and TEM photographs show that the powders present the regularly granular shape, when the hydrothermal reactions were conducted at synthesis temperatures 140~220°C and reaction time for 6~48h. The crystalline sizes of the powders were calculated by the Scherrer equation to be about 43~49nm. The crystalline sizes decreased both with the increase in synthesis temperature and the prolonged reaction time until they reached to the minimum size about 43nm at 220°C for 24h.However, they tended to increase when the reaction time was above 24h.

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