Biogenic Fabrication of Au@CeO2 Nanocomposite with Enhanced Visible Light Activity

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• 作者：Mohammad Mansoob Khan ; Sajid Ali Ansari ; Mohd Omaish Ansari ; B. K. Min ; Jintae Lee ; Moo Hwan Cho
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：May 8, 2014
• 年：2014
• 卷：118
• 期：18
• 页码：9477-9484
• 全文大小：500K
• 年卷期：v.118,no.18(May 8, 2014)
• ISSN：1932-7455

文摘

This study reports a biogenic approach to the synthesis of Au@CeO₂ nanocomposite using electrochemically active biofilms (EABs) in water under normal pressure and 30 掳C. This work presents the results of extensive morphological, structural, optical, visible light photoelectrochemical and photocatalytic studies of Au@CeO₂ nanocomposite. The presence of a large number of interfaces between Au nanoparticles and CeO₂ for charge transfer is believed to play a key role in enhancing the optical and visible light photoelectrochemical and photocatalytic performance of Au@CeO₂ nanocomposite. The enhanced visible light degradation of methyl orange and methylene blue by Au@CeO₂ nanocomposite was much higher than that by pure CeO₂. The reusability, stability, and other results suggests that the Au@CeO₂ nanocomposite could be exploited as potential candidates for visible light photocatalysis, photovoltaic, and photoelectrochemical devices.