等离子体子
半导体
表面等离子共振
光催化
材料科学
纳米材料基催化剂
激发
催化作用
纳米技术
粒子(生态学)
纳米颗粒
电子转移
纳米
光化学
化学物理
光电子学
化学
有机化学
物理
复合材料
地质学
海洋学
量子力学
作者
Yongdeok Ahn,Jiseong Park,Minsoo Park,Siwoo Jin,Woohyun Jo,Jeongho Kim,Seung Hwan Cho,Daeha Seo
出处
期刊:Chem
[Elsevier]
日期:2022-06-01
卷期号:8 (9): 2485-2497
被引量:1
标识
DOI:10.1016/j.chempr.2022.06.004
摘要
Summary
Despite its chemical stability, Au can significantly augment the catalytic properties of heterogeneous photocatalysts owing to its excellent optical properties in the visible region and localized surface plasmon resonance at the nanometer scale. However, experimental demonstration and quantitation of Au-semiconductor electron/energy-transfer pathways remain challenging. Herein, we report an optical microscopy-based combinatorial synthesis and excitation strategy to study Au@Cu2O plasmonic nanocatalysts under light irradiation at the single-particle level. Moreover, we studied the reaction kinetics of the hybridized catalyst, a property that is often difficult to investigate among the other parameters of molecular transport, and measured the individual contributions of the plasmon and excitation effects toward the intrinsic catalytic efficiency. Based on this, we propose an electron-transfer mechanism for Au-semiconductor nanoparticles. This simple and systematic strategy is a better alternative to the conventional electron microscopy technique and aids in investigating chemical reactions at the single-molecule and single-particle level.
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