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Promoting H2O2 production via 2-electron oxygen reduction by coordinating partially oxidized Pd with defect carbon

Open access
Chang, Qiaowan, Zhang, Pu, Mostaghimi, Amir Hassan Bagherzadeh, Zhao, Xueru, Denny, Steven R., Lee, Ji Hoon, Gao, Hongpeng, Zhang, Ying, Xin, Huolin L., Siahrostami, Samira, Chen, Jingguang G., Chen, Zheng·2020·Nature Communications

Abstract

Electrochemical synthesis of H 2 O 2 through a selective two-electron (2e−) oxygen reduction reaction (ORR) is an attractive alternative to the industrial anthraquinone oxidation method, as it allows decentralized H 2 O 2 production. Herein, we report that the synergistic interaction between partially oxidized palladium (Pd δ+) and oxygen-functionalized carbon can promote 2e−ORR in acidic electrolytes. An electrocatalyst synthesized by solution deposition of amorphous Pd δ+clusters (Pd 3δ+and Pd 4δ+) onto mildly oxidized carbon nanotubes (Pd δ+-OCNT) shows nearly 100% selectivity toward H 2 O 2 and a positive shift of ORR onset potential by ~320 mV compared with the OCNT substrate. A high mass activity (1.946 A mg−1 at 0.45 V) of Pd δ+-OCNT is achieved. Extended X-ray absorption fine structure characterization and density functional theory calculations suggest that the interaction between Pd clusters and the nearby oxygen-containing functional groups is key for the high selectivity and activity for 2e−ORR.

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Metadata

Authors
Chang, Q., Zhang, P., Mostaghimi, A. H. B., Zhao, X., Denny, S. R., Lee, J. H., Gao, H., Zhang, Y., Xin, H. L., Siahrostami, S., Chen, J. G., & Chen, Z.
Venue
Nature Communications
Published
2020-05-01
Volume
11
Issue
1
Pages
2178-2178
ISSN
2041-1723 (ISSN-L)
OpenAlex
W3020883793
Cited by
416
References
5
FWCI
9.30
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Promoting H2O2 production via 2-electron oxygen reduction by coordinating partially oxidized Pd with defect carbon. https://app.cochat.ai/papers/10.1038/s41467-020-15843-3
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Chang, Q., Zhang, P., Mostaghimi, A. H. B., Zhao, X., Denny, S. R., Lee, J. H., Gao, H., Zhang, Y., Xin, H. L., Siahrostami, S., Chen, J. G., & Chen, Z. (2020). Promoting H2O2 production via 2-electron oxygen reduction by coordinating partially oxidized Pd with defect carbon. Nature Communications. https://doi.org/10.1038/s41467-020-15843-3

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