Electron Donation of Non-oxide Supports Boosts O Activation on Nano-platinum Catalysts

Overview

Journal Nat Commun

Specialty Biology

Date 2021 May 13

PMID 33980837

Citations 2

Authors

Tao Gan

Jingxiu Yang

David Morris

Xuefeng Chu

Peng Zhang

Wenxiang Zhang

Yongcun Zou

Wenfu Yan

Su-Huai Wei

Gang Liu

Affiliations

Soon will be listed here.

Abstract

Activation of O is a critical step in heterogeneous catalytic oxidation. Here, the concept of increased electron donors induced by nitrogen vacancy is adopted to propose an efficient strategy to develop highly active and stable catalysts for molecular O activation. Carbon nitride with nitrogen vacancies is prepared to serve as a support as well as electron sink to construct a synergistic catalyst with Pt nanoparticles. Extensive characterizations combined with the first-principles calculations reveal that nitrogen vacancies with excess electrons could effectively stabilize metallic Pt nanoparticles by strong p-d coupling. The Pt atoms and the dangling carbon atoms surround the vacancy can synergistically donate electrons to the antibonding orbital of the adsorbed O. This synergistic catalyst shows great enhancement of catalytic performance and durability in toluene oxidation. The introduction of electron-rich non-oxide substrate is an innovative strategy to develop active Pt-based oxidation catalysts, which could be conceivably extended to a variety of metal-based catalysts for catalytic oxidation.

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