Amorós-Pérez, Ana, Lillo-Rodenas, Maria Angeles, Román-Martínez, M. Carmen, García-Muñoz, Patricia, Keller, Nicolas
TiO2 and TiO2-Carbon Hybrid Photocatalysts for Diuron Removal from Water
Amorós-Pérez A, Lillo-Ródenas MÁ, Román-Martínez MdC, García-Muñoz P, Keller N. TiO2 and TiO2-Carbon Hybrid Photocatalysts for Diuron Removal from Water. Catalysts. 2021; 11(4):457. https://doi.org/10.3390/catal11040457
URI: http://hdl.handle.net/10045/114053
DOI: 10.3390/catal11040457
ISSN: 2073-4344
Abstract: 
TiO2 and TiO2-activated carbon (AC) photocatalysts have been prepared (by sol-gel synthesis), characterized, and tested in the removal of diuron from water under simulated solar light. The preparation variables of the two series of catalysts are: (i) heat-treatment temperature of bare TiO2 (350, 400, 450 and 500 °C) and (ii) activated carbon content (0.5, 1, 5, and 10 wt.%) in TiO2-AC samples heat-treated at 350 °C. The activated carbon was previously prepared by hydrothermal carbonization of saccharose and has spherical shape. The heat-treatment temperature does not determine the efficiency of TiO2 for diuron photocatalytic degradation but clearly influences the diuron adsorption capacity. The capacity of TiO2-AC samples for diuron removal increases with the carbon content and it is the result of combined diuron adsorption and photodegradation. Thus, the sample with highest carbon content (10 wt.% nominal) leads to the highest diuron removal. The TiO2-AC photocatalysts have proved to be capable of degrading diuron previously adsorbed in dark conditions, which allows their regeneration.
Keywords:Photocatalysis, TiO2, Activated carbon, Diuron, Solar chamber
MDPI
info:eu-repo/semantics/article