覆盖层
金属
纳米颗粒
催化作用
多相催化
密度泛函理论
材料科学
纳米技术
化学
化学工程
计算化学
物理化学
有机化学
冶金
工程类
作者
Daeho Kim,Dongmin Park,Hee Chan Song,Beomgyun Jeong,Jun Young Lee,Yousung Jung,Jeong Young Park
标识
DOI:10.1021/acscatal.3c00262
摘要
The strong metal–support interaction (SMSI), which affects the catalytic performance of supported metal catalysts, plays a central role in the modern chemical industry. However, gaining a fundamental understanding of the SMSI under realistic conditions remains challenging. Herein, we show the evidence of SMSI between Pt and Co3O4 using both three-dimensional and two-dimensional model catalysts. Combined operando techniques reveal the encapsulation of Pt nanoparticles (NPs) by a Co3O4 overlayer during CO oxidation. We show that the presence of Pt–Co3O4 interface by the formation of Co3O4 overlayer on the Pt NPs is the key factor to enhancing catalytic activity, which is confirmed by density functional theory calculations. This work highlights the origin of SMSI and provides an opportunity to design high-performance heterogeneous catalysts.
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