scholarly journals One-pot hydrothermal synthesis and selective etching method of a porous MoSe2 sand rose-like structure for electrocatalytic hydrogen evolution reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (82) ◽  
pp. 52345-52351 ◽  
Author(s):  
Xuan Thai Tran ◽  
Sujittra Poorahong ◽  
Mohamed Siaj
Keyword(s):  
Hydrothermal Synthesis ◽  
Structure Formation ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
3D Structure ◽  
Simple Approach ◽  
Selective Etching ◽  
Etching Process ◽  
One Pot ◽  
Etching Method

A simple approach to fabricate a porous MoSe2 by a two-step-solvothermal/etching method was proposed. The etching process leads to a MoSe2 porous 3D structure formation with high electrocatalytic performance for hydrogen evolution.

An efficient porous molybdenum diselenide catalyst for electrochemical hydrogen generation

2017 ◽  
Vol 5 (39) ◽  
pp. 20993-21001 ◽  
Author(s):  
Sujittra Poorahong ◽  
Ricardo Izquierdo ◽  
Mohamed Siaj
Keyword(s):  
Structure Formation ◽  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
3D Structure ◽  
Simple Approach ◽  
Etching Process ◽  
Electrocatalytic Performance ◽  
Etching Method ◽  
Molybdenum Diselenide ◽  
Vertically Aligned

A simple approach to fabricate a vertically aligned porous MoSe2 by a two-step co-electrodeposition/etching method was proposed. The etching process induces MoSe2 porous 3D structure formation. The porous MoSe2 nanosheet exhibits a high electrocatalytic performance for hydrogen evolution.

Oxygen-deficient TiO2 and carbon coupling synergistically boost the activity of Ru nanoparticles for the alkaline hydrogen evolution reaction

2021 ◽  
Vol 9 (16) ◽  
pp. 10160-10168
Author(s):  
Zhongzhe Wei ◽  
Zijiang Zhao ◽  
Jing Wang ◽  
Qiang Zhou ◽  
Chenxia Zhao ◽  
...  
Keyword(s):  
Band Gap ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
One Pot ◽  
Carbon Nanocomposites ◽  
Ru Nanoparticles

Ru nanoparticles/oxygen-deficient TiO2@carbon nanocomposites are efficiently fabricated via one-pot pyrolysis. TiO2-VO and carbon narrow the band gap, optimize ΔGH2O and ΔGH* and synergistically boost the activity of Ru for the alkaline HER.

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.

Low-temperature one-pot synthesis of WS2 nanoflakes as electrocatalyst for hydrogen evolution reaction

2018 ◽  
Vol 30 (4) ◽  
pp. 045603 ◽  
Author(s):  
Wenxu Yin ◽  
Zhantong Ye ◽  
Xue Bai ◽  
Dong He ◽  
Xiaoyu Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
One Pot ◽  
One Pot Synthesis

Hydrothermal Synthesis of NiCo2O4 Nanowires on Carbon Fiber Paper for Hydrogen Evolution Catalyst

2018 ◽  
Vol 775 ◽  
pp. 139-143 ◽  
Author(s):  
Luigi A. Dahonog ◽  
Mary Donnabelle L. Balela
Keyword(s):  
Hydrothermal Synthesis ◽  
Carbon Fiber ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nanowire Arrays ◽  
Hydrothermal Time ◽  
Cathodic Current ◽  
Onset Potential ◽  
Nickel Cobaltite ◽  
Carbon Fiber Paper

Nickel cobaltite (NiCo2O4) nanowires were successfully grown on the surface of carbon fiber via hydrothermal treatment, followed by annealing. After 2 h, SEM revealed the formation of NiCo2O4 nanowire arrays on the surface of the carbon fiber paper. With increasing hydrothermal time from 2 to 12 h, the NiCo2O4 nanowires also self-assembled into urchin-like morphologies. When used as catalysts for hydrogen evolution reaction, the NiCo2O4 nanowires exhibit an onset potential for the cathodic current at-0.13 V vs. Ag/AgCl in 0.1 M KOH.

One-pot synthesis of NiCoP/CNTs composites for lithium ion batteries and hydrogen evolution reaction

Ionics ◽  
2019 ◽  
Vol 26 (4) ◽  
pp. 1771-1778 ◽  
Author(s):  
Qingtao Wang ◽  
Minmin Hou ◽  
Yanna Huang ◽  
Jian Li ◽  
Xiaozhong Zhou ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Lithium Ion ◽  
One Pot ◽  
One Pot Synthesis
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