P-type conducting transparent characteristics of delafossite Ca doped CuScO2 prepared by hydrothermal synthesis

2021 ◽  
Author(s):  
Han Gao ◽  
Xianwei Zeng ◽  
Qiang Guo ◽  
Zhi Yang ◽  
Yanwen Deng ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Delafossite Oxides ◽  
P Type

Ca doped CuScO2 (CSO) delafossite oxides with 3-4 μm were synthesized through hydrothermal method using Cu(NO3)2•3H2O, Sc(NO3)3•xH2O as precursor at 240 °C for 24 h in this work. The influence...

scholarly journals Significantly enhanced thermoelectric performance of Cu-doped p-type Bi0.5Sb1.5Te3 by a hydrothermal synthesis method

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 41111-41116 ◽  
Author(s):  
Zichen Wei ◽  
Chenyang Wang ◽  
Li You ◽  
Shijie Zhao ◽  
Kang Yang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Synthesis Method ◽  
Thermoelectric Performance ◽  
P Type

Increased electrical conductivity and decreased thermal conductivity were achieved simultaneously in the Cu-doped Bi0.5Sb1.5Te3 synthesized by a hydrothermal method.

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.

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.

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.

Hydrothermal synthesis of Pt–Ag alloy nano-octahedra and their enhanced electrocatalytic activity for the methanol oxidation reaction

Nanoscale ◽  
2014 ◽  
Vol 6 (21) ◽  
pp. 12310-12314 ◽  
Author(s):  
Geng-Tao Fu ◽  
Ru-Guang Ma ◽  
Xue-Qing Gao ◽  
Yu Chen ◽  
Ya-Wen Tang ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Methanol Oxidation ◽  
Electrocatalytic Activity ◽  
Oxidation Reaction ◽  
Methanol Oxidation Reaction ◽  
High Quality ◽  
One Pot

High-quality Pt48Ag52 alloy nano-octahedra are synthesized via one-pot hydrothermal method showing excellent electrocatalytic activity and stability for methanol oxidation reaction.

DNA-templated microwave-hydrothermal synthesis of nanostructured hydroxyapatite for storing and sustained release of an antibacterial protein

2016 ◽  
Vol 45 (4) ◽  
pp. 1648-1656 ◽  
Author(s):  
Xi Chen ◽  
Bin Yang ◽  
Chao Qi ◽  
Tuan-Wei Sun ◽  
Feng Chen ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Sustained Release ◽  
Hydrothermal Method ◽  
Nanostructured Materials ◽  
Antibacterial Study ◽  
Antibacterial Protein ◽  
Microwave Hydrothermal ◽  
Microwave Hydrothermal Method

Hydroxyapatite nanostructured materials are prepared by a DNA-templated microwave-hydrothermal method and used for IgY loading/release and antibacterial study.

scholarly journals A low-temperature hydrothermal synthesis of submicron spherical BaF2

RSC Advances ◽  
2021 ◽  
Vol 11 (63) ◽  
pp. 40051-40058
Author(s):  
Xiao Li ◽  
Yuxiang Zhao ◽  
Bo Li ◽  
Shuxuan Wang ◽  
Xingwu Zou
Keyword(s):  
Hydrothermal Synthesis ◽  
Low Temperature ◽  
Hydrothermal Method ◽  
Self Assembly ◽  
The Self ◽  
Spherical Particles

BaF2 submicron spherical particles, formed by the self-assembly of nanocubes, were prepared by a low-temperature hydrothermal method with the aid of EDTA-2Na.

Hydrothermal synthesis of octahedra-based layered niobium oxide and its catalytic activity as a solid acid

2014 ◽  
Vol 4 (12) ◽  
pp. 4250-4257 ◽  
Author(s):  
Toru Murayama ◽  
Junli Chen ◽  
Jun Hirata ◽  
Keeko Matsumoto ◽  
Wataru Ueda
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Layered Structure ◽  
Niobium Oxide ◽  
Solid Acid ◽  
Structure Type ◽  
Niobium Oxides

Layered-structure-type niobium oxides were synthesized by the hydrothermal method by using ammonium niobium oxalate as a precursor.

Nearly monodisperse Dy2Sn2O7 nanosphere: Hydrothermal synthesis without template and surfactant and effective sonocatalytic performance

2022 ◽  
Author(s):  
Zhaoxia Shi ◽  
Jinxiu Ma ◽  
Feng Li ◽  
Taohai Li
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Reaction Solution ◽  
One Step ◽  
Acid Blue

Nearly monodisperse Dy2Sn2O7 material have been prepared via one-step hydrothermal method by changing the pH of the reaction solution. The nanoparticles were used for sonocatalytic degradation of Acid blue (AB)...

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