Author, as appears in the article.: Jaramillo-Fierro, Ximena; Gonzalez, Silvia; Montesdeoca-Mendoza, Fernando; Medina, Francesc;

Department: Enginyeria Química

URV's Author/s: Medina Cabello, Francisco

Keywords: Zntio3 /tio2 Zntio3 Zeolite Tio2 Methylene blue Clay Adsorption

Abstract: Adsorption is an effective method of removing harmful pollutants from air and water. In the present study, zeolites prepared by sol-gel method from two Ecuadorian clays were combined with precursor clays and the ZnTiO3/TiO2 semiconductor for adsorbing methylene blue (MB) as a water contaminant. The synthesized compounds were characterized using powder X-ray diffraction, X-ray fluorescence, scanning electron microscopy, energy dispersive X-ray, and surface area measurement. These compounds were combined to form cylindrical extrudates of 0.2 cm (diameter) and 1.0 cm (length). The adsorption characteristics of the composites were measured using batch sorption studies as a function of pH, initial concentration, and contact time. The pseudo-second-order model and the Langmuir isotherm model were better suited to the adsorption process. The equilibrium state was achieved around 180 min of adsorption, and a pH of 7 was established as the optimal operating condition. The maximum adsorption values of the dye were obtained with the composites derived from G-Clay, whose average adsorption capacity was 46.36 mg g(-1), in contrast with composites derived from R-Clay, whose average adsorption value was 36.24 mg g(-1). The results reflect that synthesized composites could be used potentially for the removal of cationic dye from wastewater.

Thematic Areas: Physics, applied Nanoscience & nanotechnology Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) General materials science General chemical engineering Engenharias ii Chemistry, multidisciplinary Chemical engineering (miscellaneous) Chemical engineering (all)

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: francesc.medina@urv.cat

Author identifier: 0000-0002-3111-1542

Record's date: 2023-02-23

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2079-4991/11/4/898

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Nanomaterials. 11 (4):

APA: Jaramillo-Fierro, Ximena; Gonzalez, Silvia; Montesdeoca-Mendoza, Fernando; Medina, Francesc; (2021). Structuring of ZnTiO3/TiO2 Adsorbents for the Removal of Methylene Blue, Using Zeolite Precursor Clays as Natural Additives. Nanomaterials, 11(4), -. DOI: 10.3390/nano11040898

Article's DOI: 10.3390/nano11040898

Entity: Universitat Rovira i Virgili

Journal publication year: 2021

Publication Type: Journal Publications