光催化
材料科学
等离子体子
可见光谱
表面等离子共振
纳米技术
离域电子
纳米结构
光化学
光电子学
纳米颗粒
化学
催化作用
生物化学
有机化学
作者
Yue Tian,Qingqiang Cui,Linlin Xu,Anxin Jiao,Shuang Li,Xuelin Wang,Ming Chen
标识
DOI:10.1016/j.jmst.2021.02.062
摘要
The unique hot carrier-driven direct plasmonic photocatalysis of coinage metal nanomaterials (NMs) via energetic localized surface plasmon resonance (LSPR) in visible-light region has been explored in recent years. However, the low photoinduced electron transfer efficiency and insufficient separation of electron-hole pairs would severely preclude their widespread practical applications. Herein, we demonstrate an interesting plasmonic photocatalyst based on the construction of icosahedral (Ih) [email protected]60 core-shell NMs, taking advantage of specific delocalized π electrons structure of a tight C60 shell and enhanced LSPR property of Ih Au core. Then, the pronounced interfacial interaction at junction region endows the obtained [email protected]60 NMs with an outstanding photoinduced hot carrier-transmission during photocatalytic reaction, facilitating a remarkably higher (1.89 times) photocatalytic activity toward visible-light driven degradation of crystal violet (CV) dyes, as compared to bare Au NMs. Impressively, the photocatalytic activity of Ih [email protected]60 NMs can be effectively optimized by changing the pH value of reaction solution, with the kinetic rate constant reaching the maximum value of 0.179 min−1 in pH0 11.4 solution, while 0.005 min−1 at pH0 3.0. Moreover, due to the protection of a tight C60 shell, the Ih [email protected]60 NMs also possess excellent photocatalytic stability/reusability in recycling runs, holding great potential for the design of robust and high-performance plasmonic photocatalysts in repeated practical applications.
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