Morphology–activity correlation in hydrogen evolution catalyzed by cobalt sulfides

2016 ◽  
Vol 3 (2) ◽  
pp. 279-285 ◽  
Author(s):  
Bo You ◽  
Nan Jiang ◽  
Yujie Sun
Keyword(s):  
Hydrogen Evolution ◽  
Synthetic Route ◽  
Microwave Assisted ◽  
Catalyst Morphology

CoS electrocatalysts with various morphologies such as hollow nanoprism, broken nanoprism, and 3D nanoparticle could be obtained by a facile and rapid two-step microwave-assisted synthetic route. The correlation between catalyst morphology and electrocatalytic H2evolution performance was systematically studied.

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

Microwave synthesis of a CoSe2/graphene–TiO2 heterostructure for improved hydrogen evolution from aqueous solutions in the presence of sacrificial agents

RSC Advances ◽  
2015 ◽  
Vol 5 (24) ◽  
pp. 18841-18849 ◽  
Author(s):  
Kefayat Ullah ◽  
Zhu Lei ◽  
Shu Ye ◽  
Asghar Ali ◽  
Won-Chun Oh
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Evolution ◽  
Microwave Synthesis ◽  
High Performance ◽  
Heterogeneous Material ◽  
Microwave Assisted ◽  
Tube Type

A heterogeneous material consisting of a tube type TiO2 was grown in the presence of a CoSe2/graphene hybrid, as a high-performance photocatalyst material, through a fast microwave-assisted technique.

MOF-derived yolk–shell CdS microcubes with enhanced visible-light photocatalytic activity and stability for hydrogen evolution

2017 ◽  
Vol 5 (18) ◽  
pp. 8680-8689 ◽  
Author(s):  
Yun Su ◽  
Dan Ao ◽  
Hong Liu ◽  
Yong Wang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Metal Organic Framework ◽  
Visible Light Photocatalytic Activity ◽  
Microwave Assisted ◽  
Framework Approach ◽  
Metal Organic ◽  
Visible Light Photocatalytic ◽  
Organic Framework

Unique yolk–shell CdS microcubes with excellent photocatalytic H2-evolution activity and stability are synthesized through a facile microwave-assisted metal–organic-framework approach.

scholarly journals Neutron and X-ray diffraction study of ferrite nanocrystals obtained by microwave-assisted growth. A structural comparison with the thermal synthetic route. Corrigendum

2014 ◽  
Vol 47 (4) ◽  
pp. 1478-1478 ◽  
Author(s):  
Eduardo Solano ◽  
Carlos Frontera ◽  
Inés Puente Orench ◽  
Teresa Puig ◽  
Xavier Obradors ◽  
...  
Keyword(s):  
Diffraction Study ◽  
Complete List ◽  
Synthetic Route ◽  
X Ray Diffraction ◽  
Structural Comparison ◽  
X Ray ◽  
Microwave Assisted

In the paper by Solano et al. [J. Appl. Cryst. (2014), 47, 414–420], Inés Puente Orench is missing from the list of authors. The complete list of authors should be Eduardo Solano, Carlos Frontera, Inés Puente Orench, Teresa Puig, Xavier Obradors, Susagna Ricart and Josep Ros.

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