scholarly journals Elucidating active sites and decomposition mechanisms for oxythiomolybdate clusters (Mo 2 O 2 S x , x = 6;8) as catalyzers for hydrogen evolution reactions

2021 ◽  
Author(s):  
Samuel Bertolini ◽  
Timo Jacob ◽  
Carsten Streb
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
Decomposition Mechanisms ◽  
Hydrogen Evolution Reactions

scholarly journals Facile Synthesis of MoP-RuP2 with Abundant Interfaces to Boost Hydrogen Evolution Reactions in Alkaline Media

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2347
Author(s):  
Zhi Chen ◽  
Ying Zhao ◽  
Yuxiao Gao ◽  
Zexing Wu ◽  
Lei Wang
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
Large Scale ◽  
Hydrogen Gas ◽  
Alkaline Media ◽  
Hydrogen Energy ◽  
Practical Applications ◽  
Melamine Phosphate ◽  
Hydrogen Evolution Reactions ◽  
A Current

Exploiting efficient electrocatalysts for hydrogen evolution reactions (HERs) is important for boosting the large-scale applications of hydrogen energy. Herein, MoP-RuP2 encapsulated in N,P-codoped carbon (MoP-RuP2@NPC) with abundant interfaces were prepared via a facile avenue with the low-toxic melamine phosphate as the phosphorous resource. Moreover, the obtained electrocatalyst possessed a porous nanostructure, had abundant exposed active sites and improved the mass transport during the electrocatalytic process. Due to the above merits, the prepared MoP-RuP2@NPC delivered a greater electrocatalytic performance for HERs (50 mV@10 mA cm−2) relative to RuP2@NPC (120 mV) and MoP@NPC (195 mV) in 1 M KOH. Moreover, an ultralow potential of 1.6 V was required to deliver a current density of 10 mA cm−2 in the two-electrode configuration for overall water splitting. For practical applications, intermittent solar energy, wind energy and thermal energy were utilized to drive the electrolyzer to generate hydrogen gas. This work provides a novel and facile strategy for designing highly efficient and stable nanomaterials toward hydrogen production.

scholarly journals Growth of Multiorientated Polycrystalline MoS2 Using Plasma-Enhanced Chemical Vapor Deposition for Efficient Hydrogen Evolution Reactions

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1465
Author(s):  
Na Liu ◽  
Jeonghun Kim ◽  
Jeonghyeon Oh ◽  
Quang Trung Nguyen ◽  
Bibhuti Bhusan Sahu ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Hydrogen Evolution ◽  
Vapor Deposition ◽  
Active Sites ◽  
Chemical Vapor ◽  
Interlayer Spacing ◽  
Acidic Media ◽  
Energy Technologies ◽  
Hydrogen Evolution Reactions ◽  
Excellent Stability

Molybdenum disulfide (MoS2) has attracted considerable attention as a promising electrocatalyst for the hydrogen evolution reaction (HER). However, the catalytic HER performance of MoS2 is significantly limited by the few active sites and low electrical conductivity. In this study, the growth of multiorientated polycrystalline MoS2 using plasma-enhanced chemical vapor deposition (PECVD) for the HER is achieved. The MoS2 is synthesized by sulfurizing a sputtered pillar-shaped Mo film. The relatively low growth temperature during the PECVD process results in multiorientated MoS2 with an expanded interlayer spacing of ~0.75 nm, which provides abundant active sites, a reduced Gibbs free energy of H adsorption, and enhanced intralayer conductivity. In HER applications, the PECVD-grown MoS2 exhibits an overpotential value of 0.45 V, a Tafel slope of 76 mV dec−1, and excellent stability in strong acidic media for 10 h. The high HER performance achieved in this study indicates that two-dimensional MoS2 has potential as an electrocatalyst for next-generation energy technologies.

Nanosheet-assembled MoSe2 and S-doped MoSe2−x nanostructures for superior lithium storage properties and hydrogen evolution reactions

2015 ◽  
Vol 2 (10) ◽  
pp. 931-937 ◽  
Author(s):  
Yong Yang ◽  
Shitong Wang ◽  
Jingchao Zhang ◽  
Haoyi Li ◽  
Zilong Tang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hydrogen Evolution ◽  
Active Sites ◽  
Lithium Storage ◽  
Potential Applications ◽  
Hydrogen Evolution Reactions ◽  
Storage Properties

The development of layered molybdenum chalcogenides with largely exposed active sites is receiving intense interest because of their potential applications in energy storage and catalysis.

Exploring Active Sites in Multi-Heteroatom-Doped Co-Based Catalysts for Hydrogen Evolution Reactions

2018 ◽  
Vol 24 (48) ◽  
pp. 12480-12484 ◽  
Author(s):  
Ali Shahraei ◽  
Ioanna Martinaiou ◽  
K. Alexander Creutz ◽  
Markus Kübler ◽  
Natascha Weidler ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
Hydrogen Evolution Reactions

Ultrathin N-Doped Mo2C Nanosheets with Exposed Active Sites as Efficient Electrocatalyst for Hydrogen Evolution Reactions

ACS Nano ◽  
2017 ◽  
Vol 11 (12) ◽  
pp. 12509-12518 ◽  
Author(s):  
Jin Jia ◽  
Tanli Xiong ◽  
Lili Zhao ◽  
Fulei Wang ◽  
Hong Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
Hydrogen Evolution Reactions

Cluster Size Effects of Platinum Oxide as Active Sites in Hydrogen Evolution Reactions

2014 ◽  
Vol 20 (39) ◽  
pp. 12377-12380 ◽  
Author(s):  
Yu Hang Li ◽  
Jun Xing ◽  
Xiao Hua Yang ◽  
Hua Gui Yang
Keyword(s):  
Hydrogen Evolution ◽  
Size Effects ◽  
Cluster Size ◽  
Active Sites ◽  
Platinum Oxide ◽  
Hydrogen Evolution Reactions

Co,N-codoped nanotube/graphene 1D/2D heterostructure for efficient oxygen reduction and hydrogen evolution reactions

2018 ◽  
Vol 6 (9) ◽  
pp. 3926-3932 ◽  
Author(s):  
Liu Yang ◽  
Yanlong Lv ◽  
Dapeng Cao
Keyword(s):  
Oxygen Reduction ◽  
Hydrogen Evolution ◽  
Active Sites ◽  
New Approach ◽  
Multifunctional Catalysts ◽  
Catalytically Active ◽  
Hydrogen Evolution Reactions

This work provides a new approach for the in situ synthesis of bifunctional and multifunctional catalysts by integrating 1D/2D/3D materials with different catalytically active sites into one heterostructure.

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