Pronounced interfacial interaction in icosahedral Au@C60 core-shell nanostructure for boosting direct plasmonic photocatalysis under alkaline condition

• 作者: Yue Tian Qingqiang Cui Linlin Xu Anxin Jiao Shuang Li Xuelin Wang Ming Chen
• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2021,（35）
• 页码范围: 10-21
• 页数: 12页
• 语种: 英文

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) Au@C60 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 ob-tained Au@C60 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 Au@C60 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 pH011.4 solution,while 0.005 min-1 at pH03.0.Moreover,due to the protection of a tight C60 shell,the Ih Au@C60 NMs also pos-sess excellent photocatalytic stability/reusability in recycling runs,holding great potential for the design of robust and high-performance plasmonic photocatalysts in repeated practical applications.