High efficiency azo dye removal via a combination of adsorption and photocatalytic processes using heterojunction Titanium dioxide nanoparticles on hierarchical porous carbon.

Autor: Limsakul S; Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Graduate School, Chiang Mai University, Chiang Mai, 50200, Thailand., Thanachayanont C; National Metal and Materials Technology Center, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand., Siyasukh A; Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand., Jaideekard M; Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Graduate School, Chiang Mai University, Chiang Mai, 50200, Thailand., Yimklan S; Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand., Kijjanapanich P; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai, 50200, Thailand; Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, 50200, Thailand., Chimupala Y; Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai, 50200, Thailand. Electronic address: Yothin.chimupala@cmu.ac.th.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2024 Nov 01; Vol. 260, pp. 119627. Date of Electronic Publication: 2024 Jul 15.
DOI: 10.1016/j.envres.2024.119627
Abstrakt: Amidst the rapid development of the textile industry, wastewater problems also arise. High-performance materials for reactive black 5 (RB5) dye treatment by adsorption and photocatalysis were evolved using Titanium dioxide (TiO 2 ) nanoparticles on carbon media. Herein, the synthesis of spherical carbon via the water-in-oil emulsion method alongside a sol-gel process and the production of TiO 2 nanoparticles using the precipitation procedure of Titanium isopropoxide and carbonization at 700-900 °C for 2 h are a novel approach in this work. The characterization of these materials indicates that different temperatures result in distinct properties, for instance, raised pores on the surface of the media and changes in the crystal structure of TiO 2 . The results show that the as-synthesized material carbonized at 900 °C had distinguished dye adsorption, up to 430 ppm in 1 h, due to their high surface area and pore volume. On the contrary, the calcined 700 °C condition had the prominent photocatalytic efficiency on account of the heterojunction band gap between anatase and rutile crystal structure. A mixed phase minimizes the charge recombination, subsequently increasing the photocatalytic capability.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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