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Oil-in-Water Self-Assembled Synthesis of [email protected] Nano-Particles on Flower-like Bi2O2CO3 with Enhanced Visible-Light-Driven Photocatalytic Activity

1
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
2
College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan 063009, China
3
Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada
*
Authors to whom correspondence should be addressed.
Academic Editor: Erik Reimhult
Materials 2016, 9(6), 486; https://doi.org/10.3390/ma9060486
Received: 9 May 2016 / Revised: 7 June 2016 / Accepted: 12 June 2016 / Published: 17 June 2016
In this work, a series of novel flower-like [email protected]/Bi2O2CO3 were prepared by simple and feasible oil-in-water self-assembly processes. The phase structures of as-prepared samples were examined by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS), X-ray fluorescence spectrometer (XRF), etc. The characterization results indicated that the presence of [email protected] did not affect the crystal structure, but exerted a great influence on the photocatalytic activity of Bi2O2CO3 and enhanced the absorption band of pure Bi2O2CO3. The photocatalytic activities of the [email protected]/Bi2O2CO3 samples were determined by photocatalytic degradation of methylene blue (MB) under visible light irradiation. The [email protected] (10 wt %)/Bi2O2CO3 composite showed the highest photocatalytic activity, degrading 97.9% MB after irradiation for 20 min, which is over 1.64 and 3.66 times faster than that of pure [email protected] (calculated based on the equivalent [email protected] content in [email protected] (10 wt %)/Bi2O2CO3) and pure Bi2O2CO3, respectively. Bisphenol A (BPA) was also degraded to further prove the degradation ability of [email protected]/Bi2O2CO3. Photocurrent studies indicated that the recombination of photo-generated electron–hole pairs was decreased effectively due to the formation of heterojunctions between flower-like Bi2O2CO3 and [email protected] nanoparticles. Trapping experiments indicated that O2, h+ and Cl° acted as the main reactive species for MB degradation in the present photocatalytic system. Furthermore, the cycling experiments revealed the good stability of [email protected]/Bi2O2CO3 composites. Based on the above, a photocatalytic mechanism for the degradation of organic compounds over [email protected]/Bi2O2CO3 was proposed. View Full-Text
Keywords: nanoparticles; oil-in-water self-assembly; [email protected]/Bi2O2CO3; photocatalysis; methylene blue degradation nanoparticles; oil-in-water self-assembly; [email protected]/Bi2O2CO3; photocatalysis; methylene blue degradation
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MDPI and ACS Style

Lin, S.; Liu, L.; Liang, Y.; Cui, W.; Zhang, Z. Oil-in-Water Self-Assembled Synthesis of [email protected] Nano-Particles on Flower-like Bi2O2CO3 with Enhanced Visible-Light-Driven Photocatalytic Activity. Materials 2016, 9, 486.

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