Design and Synthesis of Highly Performing Bifunctional Ni-NiO-MoNi Hybrid Catalysts for Enhanced Urea Oxidation and Hydrogen Evolution Reactions

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-Mo0.84Ni0.1...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:ACS sustainable chemistry & engineering 2020-05, Vol.8 (18), p.7174-7181
Hauptverfasser: Xu, Qinglian, Qian, Guangfu, Yin, Shibin, Yu, Chen, Chen, Wei, Yu, Tianqi, Luo, Lin, Xia, Yijiang, Tsiakaras, Panagiotis
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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 H2 production.
ISSN:2168-0485
2168-0485
DOI:10.1021/acssuschemeng.0c01637