Microwave‐Assisted Ultrafast Synthesis of Molybdenum Carbide Nanoparticles Grown on Carbon Matrix for Efficient Hydrogen Evolution Reaction

Small Methods ◽  
2019 ◽  
Vol 3 (11) ◽  
pp. 1900259 ◽  
Author(s):  
Huawei Huang ◽  
Chang Yu ◽  
Hongling Huang ◽  
Wei Guo ◽  
Mengdi Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Molybdenum Carbide ◽  
Carbon Matrix ◽  
Microwave Assisted

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.

N-Doped Porous Molybdenum Carbide Nanobelts as Efficient Catalysts for Hydrogen Evolution Reaction

2018 ◽  
Vol 224 ◽  
pp. 533-540 ◽  
Author(s):  
Shengyu Jing ◽  
Lishang Zhang ◽  
Lin Luo ◽  
Jiajia Lu ◽  
Shibin Yin ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Molybdenum Carbide

Mn, P Co doped Sharp-edged Mo2C Nanosheets Anchored on Porous Carbon for Efficient Electrocatalytic Hydrogen Evolution

2022 ◽  
Author(s):  
Zongyun Mu ◽  
Ting Guo ◽  
Hao Fei ◽  
Dingsheng Xu ◽  
Yaoqing Mao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Noble Metal ◽  
Hydrogen Evolution Reaction ◽  
Porous Carbon ◽  
Bonding Strength ◽  
Molybdenum Carbide ◽  
Catalytic Sites ◽  
Co Doped

Molybdenum carbide (Mo2C) has received great attention as a promising non-noble metal electrocatalyst for hydrogen evolution reaction (HER). The exposure of more catalytic sites and optimal Mo-H bonding strength via...

3D self-assembly of ultrafine molybdenum carbide confined in N-doped carbon nanosheets for efficient hydrogen production

Nanoscale ◽  
2017 ◽  
Vol 9 (41) ◽  
pp. 15895-15900 ◽  
Author(s):  
Haiqing Wang ◽  
Xiaobin Xu ◽  
Bing Ni ◽  
Haoyi Li ◽  
Wei Bian ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Self Assembly ◽  
Molybdenum Carbide ◽  
Carbon Nanosheets ◽  
Electrocatalytic Performance ◽  
Hierarchical Architectures

3D hierarchical architectures assembled from ultrafine MoC nanoparticles (0D) confined in N-doped conductive carbon nanosheets (2D) exhibit remarkable electrocatalytic performance and stability for the hydrogen evolution reaction (HER).

Ultrafast synthesis of molybdenum carbide nanoparticles for efficient hydrogen generation

2017 ◽  
Vol 5 (43) ◽  
pp. 22805-22812 ◽  
Author(s):  
Cuncai Lv ◽  
Zhipeng Huang ◽  
Qianpeng Yang ◽  
Guangfeng Wei ◽  
Zuofeng Chen ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Carbon Coating ◽  
Molybdenum Carbide ◽  
Hydrogen Generation

A facile and ultrafast synthesis of molybdenum carbide coated with few-layer carbon (MoC/C) has been developed, and the effect of reducing the thickness of the carbon coating on its catalytic activity in the hydrogen evolution reaction (HER) has been demonstrated.

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