High-Efficiency Oxygen Reduction to Hydrogen Peroxide Catalyzed by Oxidized Mo2TiC2 MXene

The two-electron oxygen reduction reaction (2e−ORR) pathway electrochemical synthesis to H2O2 has the advantages of low investment and environmental protection and is considered to be a promising green method. Herein, the oxidized Mo2TiC2 MXene (O-Mo2TiC2) was successfully synthesized by a facile hy...

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Bibliographic Details
Published in:Catalysts 2022-08, Vol.12 (8), p.850
Main Authors: Li, Ge, Zhou, Bin, Wang, Ping, He, Miao, Fang, Zhao, Yuan, Xilin, Wang, Weiwei, Sun, Xiaohua, Li, Zhenxing
Format: Article
Language:English
Subjects:
Catalysts
Charge transfer
Chemical reactions
Chemical reduction
Chemical synthesis
Electrocatalysts
electrochemical H2O2 production
Environmental protection
Hydrogen peroxide
Mo2TiC2 MXene
Morphology
MXenes
Oxidation
oxidation treatment
Oxygen reduction reactions
Quantum dots
Selectivity
Spectrum analysis
two-electron oxygen reduction reaction
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Summary:The two-electron oxygen reduction reaction (2e−ORR) pathway electrochemical synthesis to H2O2 has the advantages of low investment and environmental protection and is considered to be a promising green method. Herein, the oxidized Mo2TiC2 MXene (O-Mo2TiC2) was successfully synthesized by a facile hydrothermal method as an electrocatalyst in electrocatalytic H2O2 production. The O-Mo2TiC2 achieved the 90% of H2O2 selectivity and 0.72 V vs. RHE of the onset potential. Moreover, O-Mo2TiC2 showed high charge transfer ability and long-term stable working ability of 40 h. This significantly enhanced electrocatalytic H2O2 production capacity is assigned the oxidation treatment of Mo2TiC2 MXene to generate more oxygen-containing groups in O-Mo2TiC2. This work provides a promising catalyst candidate for the electrochemical synthesis of H2O2.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal12080850