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Revealing the Role of d Orbitals of Transition-Metal-Doped Titanium Oxide on High-Efficient Oxygen Reduction

Lu, Fei; Xie, Weiwei; Yi, Ding; Wang, Yan; Zhang, Fengchu; Xu, Yong; Zhou, Bo; Liu, Shoujie; Wang, Xi; Yao, Jiannian

Abstract:

Precise catalysis is critical for the high-quality catalysis industry. However, it remains challenging to fundamentally understand precise catalysis at the atomic orbital level. Herein, we propose a new strategy to unravel the role of specific d orbitals in catalysis. The oxygen reduction reaction (ORR) catalyzed by atomically dispersed Pt/Co-doped Ti1xO2 nanosheets (Pt1/Co1–Ti1xO2) is used as a model catalysis. The z-axis d orbitals of Pt/Co–Ti realms dominate the O2 adsorption, thus triggering ORR. In light of orbital-resolved analysis, Pt1/Co1–Ti1xO2 is experimentally fabricated, and the excellent ORR catalytic performance is further demonstrated. Further analysis reveals that the superior ORR performance of Pt1–Ti1xO2 to Co1–Ti1xO2 is ascribed to stronger activation of Ti by Pt than Co via the d–d hybridization. Overall, this work provides a useful tool to understand the underlying catalytic mechanisms at the atomic orbital level and opens new opportunities for precise catalyst design.

Zugehörige Institution(en) am KIT Institut für Physikalische Chemie (IPC)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 11.2021
Sprache Englisch
Identifikator ISSN: 2096-5745
KITopen-ID: 1000142106
Erschienen in CCS Chemistry
Verlag Chinese Chemical Society
Band 3
Heft 11
Seiten 180–188
Nachgewiesen in Dimensions
Scopus
OpenAlex
Globale Ziele für nachhaltige Entwicklung Ziel 9 – Industrie, Innovation und Infrastruktur

Verlagsausgabe §
DOI: 10.5445/IR/1000142106
Veröffentlicht am 19.01.2022
Originalveröffentlichung
DOI: 10.31635/ccschem.020.202000659
Scopus
Zitationen: 22
Dimensions
Zitationen: 23
Seitenaufrufe: 81
seit 20.01.2022
Downloads: 75
seit 21.01.2022
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