Development of magnetically separable metal oxide-based adsorbents for the removal of cationic dyes from water

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dc.audiencegeneralPublic
dc.contributorPal, Umapada
dc.contributor.advisorPAL, UMAPADA; 16774
dc.contributor.authorGarcía Aguilar, Armando
dc.date.accessioned2025-01-23T16:39:38Z
dc.date.available2025-01-23T16:39:38Z
dc.date.issued2024-09
dc.description.abstract“In this work, core-shell nanoparticles were synthesized for application in the adsorption and removal of cationic dyes from contaminated water. The core consists of spherical magnetite (Fe3O4) primary particles of approximately 15 nm in diameter, agglomerated into spheroids of approximately 250 nm in diameter. The shell consists of a porous, amorphous layer of mixed oxides of titanium and silicon (Ti1-xSixO2). Magnetite cores were obtained by solvothermal synthesis using a single iron precursor and ethylene glycol as reducing agent. Amorphous and porous shell growth was performed by sol-gel technique varying the Si mole fraction (x=0,0.25,0.5 and 1) in the reaction solutions. For their use in the adsorption of cationic dyes, the surface charge of the nanoparticles (potential ζ) was evaluated by electrophoresis, and the specific surface area by N2 adsorption isotherms at 77 K. The fabricated nanostructures were evaluated for their adsorption capacity for cationic dyes of organic nature such as methylene blue (MB) and rhodamine b (RB). It was found that the nanostructures with x=0.25 have better performance adsorbing both dyes. The sample of composition Ti0.75Si0.25O2 revealed its ability to adsorb up to 93.18 mg MB and 36.2 mg RB per gram unit in 90 min of exposure”.
dc.folio20241105114413-7787-T
dc.formatpdf
dc.identificator1
dc.identifier.urihttps://hdl.handle.net/20.500.12371/24147
dc.language.isospa
dc.matricula.creator222470401
dc.publisherBenemérita Universidad Autónoma de Puebla
dc.rights.accesopenAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subject.classificationCIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA
dc.subject.lccIngeniería sanitaria--Abastecimiento de agua para uso doméstico e industrial--Contaminación del agua--Contaminantes y organismos específicos--Compuestos inorgánicos
dc.subject.lccTintes y teñido--Aspectos ambientales
dc.subject.lccAguas residuales--Purificación--Adsorción--Investigación
dc.subject.lccMateriales nanoestructurados--Síntesis
dc.subject.lccAdsorción--Materiales--Pruebas
dc.thesis.careerMaestría en Ciencias (en la Especialidad de Ciencias de Materiales)
dc.thesis.degreedisciplineÁrea de Ingeniería y Ciencias Exactas
dc.thesis.degreegrantorInstituto de Física "Ing. Luis Rivera Terrazas"
dc.thesis.degreetoobtainMaestro (a) en Ciencias (Ciencias de Materiales)
dc.titleDevelopment of magnetically separable metal oxide-based adsorbents for the removal of cationic dyes from water
dc.typeTesis de maestría
dc.type.conacytmasterThesis
dc.type.degreeMaestría
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