Microwave assisted green synthesis of p-type Co3O4@Mesoporous carbon spheres for simultaneous degradation of dyes and photocatalytic hydrogen evolution reaction

2021 ◽  
Vol 121 ◽  
pp. 105432 ◽  
Author(s):  
S. Akshatha ◽  
S. Sreenivasa ◽  
L. Parashuram ◽  
V. Udaya kumar ◽  
Fahad A. Alharthi ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Mesoporous Carbon ◽  
Carbon Spheres ◽  
Photocatalytic Hydrogen Evolution ◽  
Microwave Assisted ◽  
Degradation Of Dyes ◽  
P Type ◽  
Simultaneous Degradation

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 synthesis of silver nanoparticles and its application in sustainable photocatalytic hydrogen evolution

2021 ◽  
Vol 46 (69) ◽  
pp. 34264-34275
Author(s):  
Guilherme B. Strapasson ◽  
Marcelo Assis ◽  
Cláudio W. Backes ◽  
Silma A. Corrêa ◽  
Elson Longo ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Hydrogen Evolution ◽  
Microwave Assisted Synthesis ◽  
Photocatalytic Hydrogen Evolution ◽  
Microwave Assisted

Rationally Designed Ta3N5@ReS2 Heterojunctions for Promoted Photocatalytic Hydrogen Production

2021 ◽  
Author(s):  
Xiaoqiang Zhan ◽  
Zhi Fang ◽  
Bing Li ◽  
Haitao Zhang ◽  
Leyao Xu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Photocatalytic Hydrogen Production ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Active ◽  
Adsorption Processes

Highly-active heterojunctions hold the pivotal function in photocatalytic hydrogen evolution reaction (HER). Herein, Ta3N5@ReS2 photocatalysts are rationally designed via the combination of template-assisted, hydrothermal and solution-adsorption processes, in which few...

Photocatalytic hydrogen evolution on P-type tetragonal zircon BiVO4

2019 ◽  
Vol 251 ◽  
pp. 94-101 ◽  
Author(s):  
Junpeng Wang ◽  
Yanan Song ◽  
Jing Hu ◽  
Yu Li ◽  
Zeyan Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Photocatalytic Hydrogen Evolution ◽  
P Type
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