Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 260, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2019.118196
Keywords
Electrocatalysts; Molybdenum phosphide; Coupled interaction; Hierarchical structure; Hydrogen evolution reaction
Funding
- National Natural Science Foundation of China [51572166]
- Shanghai Key Laboratory of High Temperature Superconductors [14DZ2260700]
- Australian Research Council (ARC) [FT160100281]
- Shanghai Institutions of Higher Learning [TP2014041]
- Australian Government under the NCRIS program
- Australian Research Council [FT160100281] Funding Source: Australian Research Council
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In the effort to develope more effective electrocataysts for water electrolysis hydrogen generation through hydrogen evolution reaction (HER), the well-crystallized molybdenum phosphide nanoparticles dispersed in three-dimensional N,P-codoped graphite carbon nanosheets (3D MoP/NPG) are synthesized in this work using a SiO2-template-assisted strategy. Instrument characterization shows that the catalyst has a large specific surface area, high electrical conductivity, and the coupled interfaces & synergistic effect between MoP and carbon sheets toward electrocatalytic HER. Experimental results reveal that MoP/NPG possesses remarkable catalytic HER activity and stability in a wide pH range. Density functional theory (DFT) calculations reveal that the coupled interaction between MoP and carbon sheet interfaces can induce an optimal free energy of hydrogen adsorption on the catalyst surface. Both the theoretical calculations and experimental results demonstrate that the hierarchical structure with synergistic interaction between MoP and carbon sheets can facilitate charge transfer kinetics to enhance HER performance.
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