Synthesis of Au-Induced Hierarchical Nanofibers/Nanoflakes Structured BiFeO Homojunction Photocatalyst With Enhanced Photocatalytic Activity.

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ID: 19326
2018
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Abstract
In order to further improve the photocatalytic performance of BiFeO (BFO), novel Au-induced hierarchical nanofibers/nanoflakes structured BiFeO homojunctions (Au -BFO, = 0, 0. 6, 1.2, 1.8, 2.4 wt%) were synthesized through a simple reduction method with assist of sodium citrate under the analogous hydrothermal environment. The effect of loading amount of Au nanoparticles (NPs) on the physicochemical properties and photocatalytic activity was investigated in detail. The Au-BFO NFs sample show the best photocatalytic activity (85.76%), much higher than that for pure BFO samples (49.49%), mainly due to the hierarchical nanofibers/nanoflakes structured homojunction, the surface plasmon resonance (SPR) effect of Au NPs, as well as the presence of defects (Fe/Fe pairs and oxygen vacancy). Furthermore, the possible formation mechanism of the unique homojunction and the enhanced photocatalytic mechanism for the degradation of methylene blue (MB) dye are proposed. It is proven that holes (h) play the decisive role in the photocatalytic process. The present work provides a fascinating way to synthesize efficient homojunctions for the degradation of organic pollutes.
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li2018frontiers Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Li, Yan'an;Li, Jiao;Chen, Long;Sun, Haibin;Zhang, Hua;Guo, Hong;Feng, Liu;
Journal Frontiers in chemistry
Year 2018
DOI
10.3389/fchem.2018.00649
URL
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