Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 14, Issue 27, Pages 31502-31509Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c09335
Keywords
2D materials; black phosphorus; metal-organic framework; heterojunction; electrocatalysis
Funding
- National Natural Science Foundation of China [21802031, 51603061, 51973050]
- Natural Science Foundation of Hebei Province [B2019202153]
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BP@MOF heterojunctions were synthesized by growing 2D MOF-Fe/Co nanoplatelets on the surface of exfoliated BP nanosheets, leading to high activity for water splitting.
Black phosphorus/two-dimensional (2D) metal-organic framework (BP@MOF) heterojunctions were synthesized via templated growth of 2D MOF-Fe/Co nanoplatelets on the surface of exfoliated BP nanosheets at room temperature. Because Fe3+ and Co2+ ions were absorbed onto the BP surface through coordination with the lone pair electrons of 2D BP, the BP@MOF heterojunction had an intimate interface with strong interactions. Electrochemical oxygen and hydrogen evolution reactions were studied using BP@MOF as the electrocatalyst. High activity of the overall water splitting in 1.0 M KOH was observed under a current density of 10 mA cm(-2). The corresponding overpotentials for HER and OER were as low as 180 and 246 mV, respectively. Meanwhile, the BP@MOF exhibited good environmental stability and long-term electrocatalytic activity for OER and HER, owing to the encapsulation of BP nanosheets by the 2D MOF-Fe/Co. Through this study, a unique hybrid 2D nanomaterial is discovered for the efficient electrolytic splitting of water.
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