Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 18, Pages 7174-7181Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c01637
Keywords
NiMo-based catalyst; nitrogen-containing wastewater; urea oxidation reaction; hydrogen evolution reaction; large current density
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Funding
- National Natural Science Foundation of China [21872040]
- Hundred Talents Program of Guangxi Universities
- Excellence Scholars and Innovation Team of Guangxi Universities
- Open Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology [2019 K004]
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In order to provide solutions for the pollution caused by nitrogen-containing wastewater and the shortage of fossil fuels, it is urgent to design highly performing bifunctional catalysts for the urea oxidation reaction (UOR) and hydrogen evolution reaction (HER). Herein, asok-like Ni-NiO-Mo0.84Ni0.16/NF hybrids are synthesized via hydrothermal and calcination methods. They exhibit superior catalytic activities for UOR (1.33 V at 50 mA cm(-2)), higher than the ever-reported NiMo-based catalysts, and for HER (0.069 V at 50 mA cm(-2)). Furthermore, the decline in catalytic performance is negligible after operating for 60 h at 250 mA cm(-2). We suppose that the reason could be attributed to the special asok-like structure, a self-supported structure formed with 3D nickel foam (NF) and the three-phase hybrids. This work proposes a new strategy for the preparation of asok-like NiMo-based cost-effective catalysts, highly performing for both nitrogen-containing wastewater treatment and large-scale H-2 production.
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