Facile Synthesis of Highly Efficient One-Dimensional Plasmonic Photocatalysts through Ag@Cu2O Core鈥揝hell Heteronanowires

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• 作者：Jinyan Xiong ; Zhen Li ; Jun Chen ; Shanqing Zhang ; Lianzhou Wang ; Shixue Dou
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2014
• 出版时间：September 24, 2014
• 年：2014
• 卷：6
• 期：18
• 页码：15716-15725
• 全文大小：579K
• ISSN：1944-8252

文摘

A novel class of one-dimensional (1D) plasmonic Ag@Cu₂O core鈥搒hell heteronanowires have been synthesized at room temperature for photocatalysis application. The morphology, size, crystal structure and composition of the products were investigated by XRD, SEM, TEM, XPS, and UV鈥搗is instruments. It was found the reaction time and the amount of Ag nanowires play crucial roles in the formation of well-defined 1D Ag@Cu₂O core鈥搒hell heteronanowires. The resultant 1D Ag@Cu₂O NWs exhibit much higher photocatalytic activity toward degradation of organic contaminants than Ag@Cu₂O core鈥搒hell nanoparticles or pure Cu₂O nanospheres under solar light irradiation. The drastic enhancement in photocatalytic activity could be attributed to the surface plasmon resonance and the electron sink effect of the Ag NW cores, and the unique 1D core鈥搒hell nanostructure.

Keywords:

Ag@Cu₂O; one-dimensional structure; core鈭抯hell nanowires; plasmonic photocatalysts