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Title
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Highly active, selective, and stable Pd single-atom catalyst anchored on N-doped hollow carbon sphere for electrochemical H₂O₂ synthesis under acidic conditions
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Author
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Abstract
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| Single-atom catalysts (SACs) have recently attracted broad scientific interests due to their unique structural feature, the single-atom dispersion. Optimized electronic structure as well as high stability are required for single-atom catalysts to enable efficient electrochemical production of H2O2. Herein, we report a facile synthesis method that stabilizes atomic Pd species on the reduced graphene oxide/Ndoped carbon hollow carbon nanospheres (Pd1/N-C). Pd1/N-C exhibited remarkable electrochemical H2O2 production rate with high faradaic efficiency, reaching 80%. The single-atom structure and its high H2O2 production rate were maintained even after 10,000 cycle stability test. The existence of single-atom Pd as well as its coordination with N species is responsible for its high activity, selectivity, and stability. The N coordination number and substrate doping around Pd atoms are found to be critical for an optimized adsorption energy of intermediate *OOH, resulting in efficient electrochemical H2O2 production. (C) 2020 Elsevier Inc. All rights reserved. |
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Language
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English
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Source (journal)
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Journal of catalysis. - San Diego, Calif., 1962, currens
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Publication
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San Diego, Calif.
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2021
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ISSN
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0021-9517
[print]
1090-2694
[online]
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DOI
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10.1016/J.JCAT.2020.11.020
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Volume/pages
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393
(2021)
, p. 313-323
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ISI
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000640923500003
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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