纳米棒
化学
催化作用
等离子体子
离解(化学)
电子转移
纳米技术
纳米结构
电子
原子单位
化学物理
光化学
光电子学
材料科学
物理化学
有机化学
物理
量子力学
作者
Jun Guo,Yin Zhang,Lin Shi,Yanfei Zhu,Megersa Feyissa Mideksa,Ke Hou,Wenshi Zhao,Dawei Wang,Meiting Zhao,Xiaofei Zhang,Jiawei Lv,Jianqi Zhang,Xiaoli Wang,Zhiyong Tang
摘要
Hetero-nanostructures featured with both strong plasmon absorption and high catalytic activity are believed to be ideal platforms to realize efficient light-driven catalysis. However, in reality, it remains a great challenge to acquire high-performance catalysis in such hetero-nanostructures due to poor generation and transfer of plamson-induced hot electrons. In this report, we demonstrate that Au nanorod@Pd superstructures (Au@Pd SSs), where the ordered Pd nanoarrays are precisely grown on Au nanorod surfaces via solution-based seed-mediated approach, would be an excellent solution for this challenge. Both experiment and theory disclose that the ordered arrangement of Pd on Au nanorod surfaces largely promotes hot electron generation and transfer via amplified local electromagnetic field and decreased electron–phonon coupling, respectively. Each effect is separately highlighted in experiments by the significant plasmon-enhanced catalytic activity of Au@Pd SSs in two types of important reactions with a distinct time scale of bond-dissociation event: molecular oxygen activation and carbon–carbon coupling reaction. This work opens the door to design and application of new generation photocatalysts.
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