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Inorganics 2018, 6(3), 90; https://doi.org/10.3390/inorganics6030090

Assembly of ZnO Nanoparticles on SiO2@α-Fe2O3 Nanocomposites for an Efficient Photo-Fenton Reaction

1
Precision Analysis and Materials Research Center, National Taipei University of Technology, Taipei 106, Taiwan
2
Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan
*
Authors to whom correspondence should be addressed.
Received: 31 July 2018 / Revised: 20 August 2018 / Accepted: 2 September 2018 / Published: 3 September 2018
(This article belongs to the Special Issue Mixed Metal Oxides)
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Abstract

The SiO2@α-Fe2O3/ZnO metal oxide nanocomposites employed in this study were obtained using the sol-gel method. Their photocatalytic activities were enhanced by photo-Fenton reactions. The metal oxide composite of ZnO and α-Fe2O3 nanoparticles were deposited on the SiO2 nanospheres intended for visible light photocatalysis. Further, the as-synthesized SiO2@α-Fe2O3/ZnO nanocomposites exhibited a robust crystallinity and a high adsorption of dye molecules when compared to SiO2@ZnO and SiO2@α-Fe2O3 nanocomposites, respectively. The experimental results demonstrated a rapid Methylene Blue (MB) degradation among these catalysts within short intervals of time with the addition of α-Fe2O3/ZnO mixed metal oxide catalysts on the SiO2 nanospheres. Finally, a photo-Fenton reaction was implemented to confirm the presence of the hydroxyl (OH) radicals, which are powerful agents used for the degradation of organic pollutants. View Full-Text
Keywords: photo-Fenton reaction; nanocomposites; photocatalytic activity; degradation photo-Fenton reaction; nanocomposites; photocatalytic activity; degradation
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Uma, K.; Balu, S.; Pan, G.-T.; Yang, T. .-K. Assembly of ZnO Nanoparticles on SiO2@α-Fe2O3 Nanocomposites for an Efficient Photo-Fenton Reaction. Inorganics 2018, 6, 90.

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