Investigation of g-C3N4/ZnAl2O4 and ZnO/ZnAl2O4 nanocomposites: From synthesis to photocatalytic activity of pollutant dye model |
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| Affiliation: | 1. Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC), BP384, Bou-Ismail, RP 42004, Tipaza, Algeria;2. Laboratoire d’Analyse fonctionnelle des Procédés Chimiques, University of Blida1, Soumaa, 9000 Blida, Algeria;3. Laboratory of Chemistry of Natural Gas, Faculty of Chemistry (USTHB), BP 32, 16111 Algiers, Algeria;4. Unité de Développement des équipements Solaires, UDES /Centre de Développement des Energies Renouvelables, CDER, Bou Ismail, 42415, W. Tipaza, Algeria;5. Laboratoire d’Application Energétique de l''Hydrogène, University of Blida1, Soumaa, 9000 Blida, Algeria;1. Centre for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology, Off Kanakapura Road, Bengaluru, 560082, Karnataka, India;2. Research Center, Department of Science, East West Institute of Technology, Bengaluru, 560091, India;3. Sri Siddaganga College of Arts, Science and Commerce, B.H. Road, Tumakuru, 572101, Karnataka, India;4. Department of Civil Engineering, Ambedkar Institute of Technology, Bangalore, 560056, India;5. Department of Chemistry, Ambedkar Institute of Technology, Bangalore, 560056, India;6. Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Hassa, 31982, Saudi Arabia;7. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore;8. Faculty of Environment and Natural Resources, University of Technology, Vietnam National University -Ho Chi Minh, Ho Chi Minh City, 700000, Viet Nam;1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, China;2. School of Science, Lanzhou University of Technology, Lanzhou, 730050, China;1. G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the RAS, 49 Tropinin Str., 603950 Nizhny Novgorod, Russia;2. Research Institute for Chemistry, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Ave., 603950 Nizhny Novgorod, Russia;3. G.A. Razuvaev Institute of Organometallic Chemistry of the RAS, 49 Tropinin Str., 603950 Nizhny Novgorod, Russia;4. Lobachevsky State University of Nizhniy Novgorod, 23 Gagarin Ave., 603950 Nizhniy Novgorod, Russia |
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| Abstract: | The fabrication of nanocomposite photocatalytsts with excellent photocatalytic activity is an important step in the improved degradation of organic dyes. A series of nanocomposite photocatalysts was synthesized with g-C3N4 and ZnO loading contents of 10, 20 and 30%. The nanocomposites were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) surface area analysis, X-ray photoelectron spectroscopy (XPS) and diffuse reflectance spectroscopy (DRS). The optical band gaps of g-C3N4, ZnO and ZnAl2O4 were about 2.79, 3.21 and 3.55 eV, respectively. Methylene blue (MB) was degraded over the prepared photocatalysts under UV irradiation. Photocatalytic activity was about 9.1 and 9.6 times higher, respectively, on 20%g-C3N4/ZnAl2O4 and 20%ZnO/ZnAl2O4 nanocomposite photocatalysts than on pure ZnAl2O4 spinel powders. Recycling experiments showed that 20%g-C3N4/ZnAl2O4 and 20%ZnO/ZnAl2O4 nanocomposite photocatalysts exhibited good stability after five cycles of use. |
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| Keywords: | Nanocomposite Co-precipitation Optical property Photocatalytic activity |
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