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ZIF-8 induced N, P double doped porous molybdenum phosphide hydrogen evolution catalyst.
- Source :
-
International Journal of Hydrogen Energy . Mar2024, Vol. 58, p318-325. 8p. - Publication Year :
- 2024
-
Abstract
- Molybdenum based phosphides have gradually become the investigation frontier of hydrogen evolution catalysts due to the platinum like electronic structure. In this paper, N, P double-doped graphite carbon layers wrapped with MoP nanoparticles (P–MoP@NPC), is directly compounded by one-step high-temperature carboning PMo 12 -APP@ZIF-8 precursor. P–MoP@NPC possesses splendid hydrogen production reactive, in two kinds of electrolytes, when the overpotentials of P–MoP@NPC are 132 mV and 161 mV, the slope of current density reaching 10 mA cm−2, Tafel slope are 67 and 79 mV dec−1, respectively. In the bargain, P–MoP@NPC displays satisfactory durability in acid and alkaline mediums and can continue to work for more than 24 h. The wonderful hydrogen production ability of P–MoP@NPC is ascribed to the synergistic effect of MoP nanoparticles, hierarchical porous structure as well as N, P double-doped carbon layers. The confinement effect of ZIF-8 makes most of the synthesized MoP nanoparticles evenly distributed. The hierarchical porous structure caused by the volatilization of Zn atoms with high temperature can expose more active centers. The N, P double-doped graphitic carbon layers not only protect the catalyst but also adjust the electronic structure of MoP, promoting the hydrogen production capacity. This work may provide a general way to study molybdenum phosphide catalysts synthesized by APP as a green phosphorus source for energy conversion. Molybdenum phosphide catalyst (P–MoP@NPC) was synthesized by simple solution mixing and high temperature calcination. The synthesized P–MoP@NPC has good catalytic activity and stability at 0.5 M H 2 SO 4 and 1 M KOH. [Display omitted] • APP is used as a green phosphorus source for phosphatization. • N, P dual-doped catalyst (P–MoP@NPC) was constructed with high efficiency hydrogen evolution activity; • Zn ions volatilization in ZIF-8 causes multistage pores to expose more active sites; • The confinement effect of ZIF-8 makes MoP nanoparticles evenly distributed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 58
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 175642223
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2024.01.201