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  Partially Pyrolyzed Binary Metal–Organic Framework Nanosheets for Efficient Electrochemical Hydrogen Peroxide Synthesis

Wang, M., Zhang, N., Feng, Y., Hu, Z., Shao, Q., & Huang, X. (2020). Partially Pyrolyzed Binary Metal–Organic Framework Nanosheets for Efficient Electrochemical Hydrogen Peroxide Synthesis. Angewandte Chemie, International Edition in English, 59, 1-6. doi:10.1002/anie.202006422.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-BF43-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-BF4B-0
Genre: Journal Article

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 Creators:
Wang, Mengjun1, Author
Zhang, Nan1, Author
Feng, Yonggang1, Author
Hu, Zhiwei2, Author              
Shao, Qi1, Author
Huang, Xiaoqing1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

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Free keywords: electrocatalysis, hydrogen peroxide, metal–organic frameworks, oxygen reduction reaction, pyrolysis, Catalyst activity, Electrolytic reduction, Iron compounds, Nanoparticles, Nanosheets, Nickel oxide, Oxygen reduction reaction, Potassium hydroxide, Synthesis (chemical), Binary metals, Co-ordinatively unsaturated, Electrochemical synthesis, Enhanced catalytic activity, KOH solution, NiO nanoparticles, Overpotential, Production rates, Nickel
 Abstract: Herein, we developed a partially controlled pyrolysis strategy to create evenly distributed NiO nanoparticles within NiFe-MOF nanosheets (MOF NSs) for electrochemical synthesis of H2O2 by a two-electron oxygen reduction reaction (ORR). The elemental Ni can be partially transformed to NiO and uniformly distributed on the surface of the MOF NSs, which is crucial for the formation of the particular structure. The optimized MOF NSs-300 exhibits the highest activity for ORR with near-zero overpotential and excellent H2O2 selectivity (ca. 99 %) in 0.1 m KOH solution. A high-yield H2O2 production rate of 6.5 mol gcat−1 h−1 has also been achieved by MOF NSs-300 in 0.1 m KOH and at 0.6 V (vs. RHE). In contrast to completely pyrolyzed products, the enhanced catalytic activities of partially pyrolyzed MOF NSs-300 originates mainly from the retained MOF structure and the newly generated NiO nanoparticles, forming the coordinatively unsaturated Ni atoms and tuning the performance towards electrochemical H2O2 synthesis. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

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Language(s): eng - English
 Dates: 2020-05-262020-05-26
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1002/anie.202006422
 Degree: -

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Title: Angewandte Chemie, International Edition in English
  Abbreviation : Angew. Chem., Int. Ed. Engl.
Source Genre: Journal
 Creator(s):
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 59 Sequence Number: - Start / End Page: 1 - 6 Identifier: ISSN: 0570-0833
CoNE: https://pure.mpg.de/cone/journals/resource/0570-0833