Ceria-Coated Gold Nanorods for Plasmon-Enhanced Near-Infrared Photocatalytic and Photoelectrochemical Performances

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• 作者：Jia-Hong Wang ; Ming Chen ; Zhi-Jun Luo ; Liang Ma ; Ya-Fang Zhang ; Kai Chen ; Li Zhou ; Qu-Quan Wang
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：July 14, 2016
• 年：2016
• 卷：120
• 期：27
• 页码：14805-14812
• 全文大小：481K
• 年卷期：0
• ISSN：1932-7455

文摘

Metal/semiconductor heteronanostructures perform wide applications in light-driven physical and chemical processes; in particular, nanomaterials based on anisotropic metal nanocrystals with tunable plasmonic properties have attracted intense interest. We report an efficient hydrothermal method for the synthesis of well-defined ceria (CeO₂)-coated gold nanorods (AuNRs) by employing the original hexadecyltrimethylammonium bromide as the ligands and soft-template. Importantly, the Au/CeO₂ core/shell NRs have well maintained the tunable longitudinal plasmon resonance of AuNRs in the near-infrared (NIR) region. We demonstrate that this heteronanostructure can accelerate the ceria-dependent Fenton-like reaction through the plasmon-induced hot-electron injection under NIR light illumination. The generation of hot-electrons is further revealed by detecting the NIR-light-driven photocurrent of a photoelectrochemical cell based on the Au/CeO₂ core/shell NRs modified electrode.