Temperature-controlled hydrothermal synthesis of γ-MnOOH, Mn3O4 and MnCO3 on a carbon cloth for supercapacitor applications

CrystEngComm ◽  
2020 ◽  
Vol 22 (23) ◽  
pp. 4014-4022
Author(s):  
Shujuan Meng ◽  
Qiong Su ◽  
Ping Zhang ◽  
Wanhong Sun ◽  
Yanbin Wang
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Formation Mechanism ◽  
Reaction Temperature ◽  
Controlled Synthesis ◽  
Carbon Cloth ◽  
Temperature Controlled ◽  
Supercapacitor Applications

In this study, a reaction temperature-controlled synthesis of γ-MnOOH, Mn3O4 and MnCO3 (and also their mixture) on carbon cloth via a hydrothermal method is investigated, and the formation mechanism is discussed.

The hydrothermal synthesis and formation mechanism of single-crystalline perovskite BiFeO3 microplates with dominant (012) facets

CrystEngComm ◽  
2014 ◽  
Vol 16 (20) ◽  
pp. 4176-4182 ◽  
Author(s):  
Xin Yang ◽  
Gang Xu ◽  
Zhaohui Ren ◽  
Xiao Wei ◽  
Chunying Chao ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Single Crystal ◽  
Hydrothermal Method ◽  
Formation Mechanism ◽  
Organic Ligands ◽  
Adsorption Behaviour ◽  
One Pot ◽  
Single Crystalline

Single-crystal BiFeO3 (BFO) microplates with dominant (012) facets were successfully synthesized by a facile one-pot hydrothermal method. The adsorption behaviour of the organic ligands may play a key role in the formation of the BFO microplates.

Facile morphology-controllable hydrothermal synthesis and color tunable luminescence properties of NaGd(MoO4)2:Eu3+,Tb3+ microcrystals

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 45693-45702 ◽  
Author(s):  
Anming Li ◽  
Dekang Xu ◽  
Hao Lin ◽  
Shenghong Yang ◽  
Yuanzhi Shao ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Formation Mechanism ◽  
Luminescence Properties ◽  
Facile Hydrothermal Method ◽  
Morphological Control ◽  
Color Tunable

Morphological control, formation mechanism and tunable photoluminescence of NaGd(MoO4)2:Eu3+,Tb3+ microcrystals synthesized by a facile hydrothermal method.

scholarly journals Morphology-controlled synthesis of CoMoO4 nanoarchitectures anchored on carbon cloth for high-efficiency oxygen oxidation reaction

RSC Advances ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 1562-1569 ◽  
Author(s):  
Feifei Wang ◽  
Juan Zhao ◽  
Wen Tian ◽  
Zhufeng Hu ◽  
Xingbin Lv ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Oxidation Reaction ◽  
High Efficiency ◽  
Controlled Synthesis ◽  
Carbon Cloth ◽  
Atom Ratio ◽  
Simple Hydrothermal Method ◽  
Oxygen Oxidation

Novel CoMoO4 nanoarrays with different morphologies are anchored on a carbon cloth via a simple hydrothermal method by adjusting the Co/Mo atom ratio.

Study of the temperature effect on the morphology and structure of ZnS nanoparticles synthesized by hydrothermal method

MRS Advances ◽  
2020 ◽  
Vol 5 (63) ◽  
pp. 3379-3388
Author(s):  
Claudia J. Bahena-Martínez ◽  
Nayely Torres-Gómez ◽  
Alfredo R. Vilchis-Néstor
Keyword(s):  
Hydrothermal Synthesis ◽  
Temperature Effect ◽  
Hydrothermal Method ◽  
Formation Mechanism ◽  
Zinc Sulphide ◽  
Effect Of Temperature ◽  
Zns Nanoparticles ◽  
Temperature Increment ◽  
Morphology And Structure ◽  
Subsequent Decomposition

AbstractThe control over the materials structure is crucial for the modulation of its properties, in order to achieve this control is important to know the formation mechanism of the material as function of parameters used. For this purpose, the effect of temperature (120, 140, 160 and 180 °C) on the hydrothermal synthesis of zinc sulphide is evaluated and a proposal of the sequence of reactions formation of zinc sulphur is presented. ZnS nanostructures with blend-phase were obtained, the temperature increment induces the growth of the nanostructure ranged between .62 and 12.72 nm, furthermore, increase the crystallinity of the ZnS nanostructures. The proposed reactions suggest the formation of a complex of thioacetamide with the Zn+2 and its subsequent decomposition into ZnS.

Ethylene Glycol Assisted Hydrothermal Synthesis of Flower-Like and Sphere-Like ZnO

2010 ◽  
Vol 148-149 ◽  
pp. 849-853 ◽  
Author(s):  
Ke Zou ◽  
You Shi Wu ◽  
Jin Bo Zhao ◽  
Li Li Wu
Keyword(s):  
Optical Properties ◽  
Hydrothermal Synthesis ◽  
Ethylene Glycol ◽  
Hydrothermal Method ◽  
Formation Mechanism ◽  
Water Solution ◽  
Volume Ratio ◽  
Morphology Control ◽  
Complexing Agents ◽  
Absorption Spectrometer

ZnO microsturctures with flower-like and sphere-like morphologies have been successfully synthesized in ethylene glycol (EG) -water solution at 160 through a hydrothermal method. The volume ratio of EG to H2O plays an important role on the morphology control of ZnO. CH3COONH4 and NaOH were used as hydroxide source as well as complexing agents. The ZnO samples were characterized by XRD, FTIR and SEM. The optical properties of the final products were investigated by UV-vis absorption spectrometer and photoluminescence. The formation mechanism was also discussed.

Structural-controlled synthesis of polyaniline nanoarchitectures using hydrothermal method

2014 ◽  
Vol 27 (2) ◽  
pp. 207-216 ◽  
Author(s):  
Xuyang Zhu ◽  
Kun Hou ◽  
Chun Chen ◽  
Weiqiang Zhang ◽  
Huaming Sun ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Controlled Synthesis

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 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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