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Early Stages of Electrochemical Oxidation of Cu(111) and Polycrystalline Cu Surfaces Revealed by in Situ Raman Spectroscopy

Bodappa, Nataraju, Su, Min, Zhao, Yu, Le, Jia-Bo, Yang, Wei-Min, Radjenovic, Petar, Dong, Jin-Chao, Cheng, Jun, Tian, Zhong-Qun, Li, Jian-Feng·2019·Journal of the American Chemical Society

Abstract

Investigating the chemical nature of the adsorbed intermediate species on well-defined Cu single crystal substrates is crucial in understanding many electrocatalytic reactions. Herein, we systematically study the early stages of electrochemical oxidation of Cu(111) and polycrystalline Cu surfaces in different pH electrolytes using in situ shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS). On Cu(111), for the first time, we identified surface OH species which convert to chemisorbed “O” before forming Cu 2 O in alkaline (0.01 M KOH) and neutral (0.1 M Na 2 SO 4 ) electrolytes; while at the Cu(poly) surface, we only detected the presence of surface hydroxide. Whereas, in a strongly acidic solution (0.1 M H 2 SO 4 ), sulfate replaces the hydroxyl/oxy species. This results improves the understanding of the reaction mechanisms of various electrocatalytic reactions.

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Metadata

Authors
Bodappa, N., Su, M., Zhao, Y., Le, J.-B., Yang, W.-M., Radjenovic, P., Dong, J.-C., Cheng, J., Tian, Z.-Q., & Li, J.-F.
Venue
Journal of the American Chemical Society
Published
2019-07-21
Volume
141
Issue
31
Pages
12192-12196
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2963324608
Cited by
274
References
4
FWCI
4.59
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Early Stages of Electrochemical Oxidation of Cu(111) and Polycrystalline Cu Surfaces Revealed by in Situ Raman Spectroscopy. https://app.cochat.ai/papers/10.1021/jacs.9b04638
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Bodappa, N., Su, M., Zhao, Y., Le, J.-B., Yang, W.-M., Radjenovic, P., Dong, J.-C., Cheng, J., Tian, Z.-Q., & Li, J.-F. (2019). Early Stages of Electrochemical Oxidation of Cu(111) and Polycrystalline Cu Surfaces Revealed by in Situ Raman Spectroscopy. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.9b04638

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