Abstract
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.
基金项目
National Natural Science Foundation of China (NSFC)(11905115)
National Natural Science Foundation of China (NSFC)(11575102)
Shandong Jianzhu University XNBS Foundation(1608)
Fundamental Research Fund of Shandong University(2018JC022)
NETL
NSTL
万方数据