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7684 |
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Friday, May 06, 2022, Hall -2.32/33 11:00 AM Renewable Power Generation |
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Suspension plasma sprayed photocatalytically active CeO2-TiO2 coatings |
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H. Khatibnezhad* / Concordia University, Canada F. Ettouil / Concordia University, Canada Christian Moreau/ Concordia University, Canada |
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Thermal spray and Surface Engineering Research Center (TSSE), Department of Mechanical, Industrial and Aerospace Engineering of Concordia University, Montreal, QC, Canada *Author presenter e-mail: Hediyeh.khatibnezhad@mail.concordia.ca Nowadays, water and air contaminations are a serious form of pollution, and their damaging effects on human health and the biosphere can be irreparable. Recently the advantages of titanium dioxide (TiO2), as one of the most recognized photocatalysts for the degradation of organic compounds in wastewater, have prompted a great deal of research. In this work, CeO2-TiO2 composite coatings and Ce doped-TiO2 coatings were produced using suspension plasma spraying (SPS) and solution precursor plasma spraying (SPPS). The photocatalytic activity of the coatings was evaluated by measuring methylene blue (MB) degradation percent under visible light irradiation. Additionally, coatings were analyzed by X-ray diffractometer (XRD), confocal laser microscope, scanning electron microscope (SEM), and UV-visible spectroscope. Based on the results, it has been shown that modifying TiO2 with cerium as rare earth (RE) metal could enhance the visible light sensitivity and affect the photocatalytic activity to degrade MB pollutants. Keywords: TiO2, Doping, CeO2, Photocatalytic activity, Suspension plasma spray |