Plasmon‐Enhanced CO Selective Oxidation in H2 over Pt Nanoclusters Supported on Metallic Molybdenum Dioxide Nanocrystals,Advanced Materials Interfaces

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Plasmon‐Enhanced CO Selective Oxidation in H2 over Pt Nanoclusters Supported on Metallic Molybdenum Dioxide Nanocrystals
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2020-11-23 , DOI: 10.1002/admi.202001657
Qiqi Zhang ₁ , Zhongshan Yang ₁ , Xin Chen ₁ , Shangbo Ning ₁ , Yuhang Qi ₁ , Lequan Liu ₁ , Jinhua Ye _{1,

2}

Affiliation

The localized surface plasmonic resonance (LSPR) excitation in plasmonic nanoparticles is showing great promise in solar‐driven chemical conversions, known as plasmon‐induced catalysis. In exploring its enormous potential, constructing multicomponent structure with both LSPR absorption and catalytic active parts is an ideal way, while most studies are limited to metallic core‐shell structure. Herein, hybrid nanostructure with plasmonic metal oxide (MoO₂) and catalytic Pt nanoclusters is successfully designed. Under illumination, it not only demonstrates to be highly active for the preferential oxidation of CO in the presence of H₂ (CO‐PROX) but also shows a dramatically wide temperature range for the total conversion of CO. The pathway of plasmon‐energy decay in MoO₂ is clarified to selectively dissipate through catalytically active Pt sites in the form of hot carriers, thereby inducing efficient chemical transformation. These results may open an avenue in exploring plasmonic metal oxide materials to drive and modulate plasmon‐induced catalysis under illumination.

中文翻译：

金属二氧化钼纳米晶体支撑的Pt纳米团簇上H2的等离子体增强CO选择氧化

等离子纳米粒子中的局部表面等离子共振（LSPR）激发在太阳能驱动的化学转化（称为等离激元诱导的催化）中显示出巨大的希望。在探索其巨大潜力时，同时具有LSPR吸收和催化活性部分的多组分结构是一种理想的方法，而大多数研究仅限于金属核-壳结构。在本文中，成功设计了具有等离子体金属氧化物（MoO ₂）和催化性Pt纳米簇的杂化纳米结构。在光照下，它不仅证明在H ₂（CO-PROX）存在下对CO的优先氧化具有很高的活性，而且还显示了CO完全转化的极大温度范围。等离子体激元能量衰减的途径在MoO _2中明确了以热载体形式通过催化活性的Pt位点选择性消散，从而诱导有效的化学转化。这些结果可能为探索等离激元金属氧化物材料以驱动和调节等离激元诱发的催化作用开辟一条途径。

更新日期：2020-12-17

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