Electrocatalysis of Oxygen Reduction on Te-Modified Platinum Stepped Crystal Surfaces
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http://hdl.handle.net/10045/138853
Títol: | Electrocatalysis of Oxygen Reduction on Te-Modified Platinum Stepped Crystal Surfaces |
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Autors: | Mao, Ting-Ting | Wei, Zhen | Liu, Bing-Yu | Xu, Yu-Jun | Cai, Jun | Chen, Yan-Xia | Feliu, Juan M. | Herrero, Enrique |
Grups d'investigació o GITE: | Electroquímica de Superficies |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Paraules clau: | Oxygen reduction reaction | Platinum stepped crystal planes | Te modification | Electron transfer | OHad binding energy |
Data de publicació: | 30-de novembre-2023 |
Editor: | American Chemical Society |
Citació bibliogràfica: | ACS Catalysis. 2023, 13(24): 16045-16054. https://doi.org/10.1021/acscatal.3c04876 |
Resum: | Te-modified platinum single-crystal surfaces in the [011̅] zone have been used as model electrocatalysts for oxygen reduction reaction (ORR). The results clearly show that (1) except for Pt(111), all other electrodes display enhanced ORR activity when Te is deposited on the surface; (2) the intrinsic ORR activity for Pt(hkl) decreases in the order of Pt(322) > Pt(755) > Pt(977) > Pt(111) > Pt(311) > Pt(100), while the enhancement factor for ORR with Te modification decreases in the order of Pt(100) > Pt(311) > Pt(977) > Pt(755) > Pt(322); (3) metallic Te and its charge transfer to Pt as well as the consequent lower d-band center and OHad binding energy are probably the reasons for the enhanced electrocatalysis for ORR with Te modification; and (4) the inhibition of Te at Pt(111) as well as the smaller extent for the enhancement of Te at Pt(S)-[n(111) × (100)] with longer terraces in the kinetic region for ORR are a result of partial oxidation of Te. The weaker electronic interaction of Te with the Pt substrate is probably the origin of its facile oxidation at lower potential. Our results imply that modification of Pt with species that can transfer electrons to Pt may be an efficient strategy to enhance the ORR activity. |
Patrocinadors: | This work was supported by the National Natural Science Foundation of China (No. 22172151, 21972131, and 21832004). E.H. gratefully acknowledged the International Professorship by USTC and financial support from the Ministerio de Ciencia e Innovación (project PID2022–137350NB-I00). |
URI: | http://hdl.handle.net/10045/138853 |
ISSN: | 2155-5435 |
DOI: | 10.1021/acscatal.3c04876 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2023 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0. |
Revisió científica: | si |
Versió de l'editor: | https://doi.org/10.1021/acscatal.3c04876 |
Apareix a la col·lecció: | INV - EQSUP - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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Mao_etal_2023_ACSCatal.pdf | 2,41 MB | Adobe PDF | Obrir Vista prèvia | |
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