Colloidal synthetic methods of amorphous molybdenum phosphide nanoparticles for hydrogen evolution reaction catalystsColloidal synthetic methods of amorphous molybdenum phosphide nanoparticles for hydrogen evolution reaction catalysts
- Authors
- 강혜리; 이태겸; 박윤수; 홍윤건; 최미리; 조지웅; 하돈형
- Issue Date
- Aug-2020
- Publisher
- 한국화학공학회
- Keywords
- Hydrogen Evolution Reaction; Transition Metal Phosphide; Molybdenum Phosphide Nanoparticle; Colloidal Nanoparticle; Electrocatalyst
- Citation
- Korean Journal of Chemical Engineering, v.37, no.8, pp 1419 - 1426
- Pages
- 8
- Journal Title
- Korean Journal of Chemical Engineering
- Volume
- 37
- Number
- 8
- Start Page
- 1419
- End Page
- 1426
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/43012
- DOI
- 10.1007/s11814-020-0576-4
- ISSN
- 0256-1115
1975-7220
- Abstract
- Transition metal phosphides (TMPs) have recently emerged as promising hydrogen evolution reaction (HER) catalytic alternatives to platinum. Among them, molybdenum phosphide (MoP) has attracted extensive attention due to its high electrical conductivity, good stability, and Pt-like electronic structure; however, there is no systematic comparison of its different colloidal synthetic routes. This study systematically compares two colloidal synthetic methods, one-pot and two-step, for amorphous MoP and the associated morphological changes during their reaction time. The amorphous MoP nanoparticles synthesized via the two-step method within 4 h exhibited the highest HER performance with an overpotential of 177 mV in 0.50 M H2SO4 for a current density of 10 mA cm2; this might be due to their highly developed Mo-P bondings revealed by X-ray photoelectron spectroscopy analysis. Thus, this work demonstrates that the HER catalytic performance of MoP can be significantly influenced by its synthetic method and reaction time.
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