3DOM InVO4-supported chromia with good performance for the visible-light-driven photodegradation of rhodamine B |
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| Affiliation: | 1. Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, The University of Sydney, Sydney 2006, Australia;2. Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran;3. Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, University of Kashan, Kashan, Iran;4. Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Sydney 2052, Australia;5. Department of Micro- and Nanotechnology, Technical University of Denmark, Kongens Lyngby 2800, Denmark;6. Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | 
Three-dimensionally ordered macroporous (3DOM) monoclinic InVO4 and its supported chromia (yCrOx/3DOM InVO4, y denotes as the weight percentage of Cr2O3, y = 5, 10, 15, and 20 wt%) photocatalysts were fabricated using the ascorbic acid-assisted polymethyl methacrylate-templating and incipient wetness impregnation methods, respectively. Physicochemical properties of the materials were characterized by means of a number of analytical techniques. Photocatalytic activities of the samples were evaluated for the degradation of rhodamine B (RhB) in the presence of H2O2 under visible-light illumination. Compared to 3DOM InVO4 and 15CrOx/bulk InVO4, yCrOx/3DOM InVO4 showed much better visible-light-driven photocatalytic performance for RhB degradation, with the 15CrOx/3DOM InVO4 sample performing the best. It is concluded that the CrOx loading, higher surface area and surface oxygen vacancy density and lower bandgap energy as well as the better quality of 3DOM structure were responsible for the good photocatalytic performance of 15CrOx/3DOM InVO4 for the degradation of RhB. |
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| Keywords: | Three-dimensionally ordered macroporous indium vanadate Supported chromia Visible-light-driven photocatalyst Dye photodegradation |
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