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Green synthesis and enhanced photocatalytic activity of Ce-doped TiO2 nanoparticles supported on porous glass |
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| Institution: | 1. Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630 003, Tamil Nadu, India;2. Electro Inorganic Division, CSIR–Central Electrochemical Research Institute (CSIR–CECRI), Karaikudi 630003, Tamil Nadu, India;3. Electrodics and Electrocatalysis (EEC) Division, CSIR–Central Electrochemical Research Institute (CSIR–CECRI), Karaikudi 630003, Tamil Nadu, India;4. Department of Mechanical Engineering, Lamar University, Beaumont, TX 77710, USA;1. Instituto de Ingeniería Electroquímica y Corrosión (INIEC), CONICET, Universidad Nacional del Sur. Av. Alem 1253, Bahía Blanca B8000CPB, Argentina;2. Departamento de Química, INQUISUR, CONICET, Universidad Nacional del Sur, Av. Alem 1253, Bahía Blanca B8000CPB, Argentina;1. Department of Chemistry, Universidad Nacional del Sur, 8000 Bahía Blanca, INQUISUR-CONICET, Argentina;2. Research Center, Hôpital Sacré-C?ur Montreal, 5400 Boulevard Gouin Ouest, Montréal, Québec H4J 1C5, Canada;3. Laboratory for Innovation and Analysis of Bio-Performance, École Polytechnique de Montréal, C.P. 5079, Succursale Centre-Ville Montréal, Quebec H3C 3A7, Canada |
| Abstract: | A facile and green method to prepare Ce-doped TiO2 nanoparticles supported on porous glass beads is reported. An ion exchange process and subsequent calcination yielded Ce-doped TiO2 nanoparticles with a mean size of 4.8 ± 0.3 nm. The nanoparticles were dispersed on the surface of porous glass beads. The addition of Ce enhanced the visible light absorption of the TiO2 nanoparticles in the 400–500 nm spectral window. The band gap of the as-prepared catalyst was 2.80 eV. The Ce-doped TiO2 nanoparticles immobilized on porous glass beads exhibited excellent photocatalytic activity for the visible-light-degradation of methyl orange (MO) and rhodamine B (RhB); with rate constants of 0.095 and 0.230 min?1; respectively. The effects of Ce dosage; reaction duration; and initial solution pH on the conversion of MO and RhB dyes were investigated. The green synthesis and favorable photocatalytic activity makes the Ce-doped TiO2 nanoparticles immobilized on porous glass an attractive alternative for the efficient degradation of organic pollutants. |
| Keywords: | Supported nanoparticles Porous glass beads Photocatalytic degradation |
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