Exploring the electronic metal-support interactions in platinum-deposited cobalt oxide catalysts for benzene combustion: A comparison of Pt nanoparticles and site-isolated Pt atoms

IF 6.5 1区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Catalysis Pub Date : 2025-03-26 DOI:10.1016/j.jcat.2025.116100

Jiangwei Ni , Jia Chen , Jinxu Fang, Zhiwei Huang, Mingshuo Tian, Qiqi Zhou, Wen Chen, Juanjuan Gong, Junhong Chen, Shuangning Gan, Xinlong Liao, Xiaomin Wu, Huazhen Shen, Huawang Zhao, Guohua Jing

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Abstract

Insight into metal-support interactions at the nanoscale is of prominent significance in the development of efficient catalysts for volatile organic compound (VOC) abatement. This study investigates catalysts with distinct Pt active centers including Pt nanoparticles (Pt_NP) and single-atom Pt (Pt₁) supported on Mn-Co₃O₄ and reveals their electronic metal-support interaction characteristics. Benzene combustion tests show a contrasting trend exhibited by these two representative samples. Characterization techniques confirm that the superior performance of Pt_NP/Mn-Co₃O₄ stems from promotive electronic interaction. The effective charge transfer enhances reducibility and oxygen activation, coupled with the excellent benzene adsorption capacity of Pt_NP. However, the inhibitive role of Pt₁ in Mn-Co₃O₄ hinders the lattice oxygen mobility and leads to undesirable performance. Mechanistic insights elucidate the EMSI-induced benefits of being less prone to surface species poisoning, along with detailed reaction mechanisms and benzene decomposition route. This EMSI-dependent understanding of benzene combustion behavior offers valuable insights into the rational design of Pt-based catalysts for benzene abatement.

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来源期刊

Journal of Catalysis 工程技术-工程：化工

CiteScore

12.30

自引率

5.50%

发文量

447

审稿时长

31 days

期刊介绍： The Journal of Catalysis publishes scholarly articles on both heterogeneous and homogeneous catalysis, covering a wide range of chemical transformations. These include various types of catalysis, such as those mediated by photons, plasmons, and electrons. The focus of the studies is to understand the relationship between catalytic function and the underlying chemical properties of surfaces and metal complexes. The articles in the journal offer innovative concepts and explore the synthesis and kinetics of inorganic solids and homogeneous complexes. Furthermore, they discuss spectroscopic techniques for characterizing catalysts, investigate the interaction of probes and reacting species with catalysts, and employ theoretical methods. The research presented in the journal should have direct relevance to the field of catalytic processes, addressing either fundamental aspects or applications of catalysis.