TY - JOUR
T1 - Geometry influenced adsorption of fluoxetine over the surface of RuFeO3 and CeFeO3 nanoparticles
T2 - Kinetics and thermodynamic studies
AU - Narayanan, Jayanthi
AU - Hernández, José Guadalupe
AU - Padilla-Martínez, Itzia Irene
AU - Thangarasu, Pandiyan
AU - Santos Garay, Sonia Estefanía
AU - Palacios Cabrera, Cristian Brayan
AU - Santiago Cuevas, Alan Javier
N1 - Publisher Copyright:
© 2021 Elsevier Ltd and Techna Group S.r.l.
PY - 2021/7/15
Y1 - 2021/7/15
N2 - Novel mesoporous ferrite nanoparticles of ruthenium (RuFeO3) and cerium (CeFeO3) with large surface area were successfully fabricated by hydrothermal method and applied for the removal of fluoxetine from aqueous solution. The morphology and physicochemical properties of meso-porous metal ferrites were characterized by different analytical techniques. The obtained results showed that the particle size of 20–30 nm for meso-CeFeO3, and 80–100 nm for meso-RuFeO3 respectively. Study of the adsorption of fluoxetine over metal ferrite nanoparticles was explored using UV–vis spectroscopy at different experimental conditions such as temperature, pH, initial fluoxetine concentration and time. The adsorption data were fitted and analyzed with kinetic and different adsorption isotherm models, and the results showed that both the metal ferrites effectively adsorbed fluoxetine (>99%). The maximum adsorption capacity of 729.6 mg g−1 for CeFeO3, and 683.5 mg g−1 for RuFeO3 at neutral pH and at 25 °C were observed. The amount adsorbed over the surface of metal ferrite nanoparticles increased with increasing initial fluoxetine concentration, reaction time, and temperature, and the adsorption performance improved under neutral conditions (pH 7 and 8). The pseudo-second order kinetic and Langmuir isotherm models satisfactorily fitted the adsorption data, showing that the adsorption of fluoxetine involved physical adsorption through intermolecular electrostatic force between the metal ferrites and fluoxetine which is further confirmed by intra-particle diffusion model. The observed wide band/gap, 3.815eV for CeFeO3, and 3.360eV for RuFeO3 respectively showed their stability towards visible light suggesting their real sample applicability, recovery and reuse capability involving physisorption with fluoxetine molecules. In addition, the feasible adsorption process of fluoxetine is analyzed with its geometry that is determined by theoretical energy calculations using DFT.
AB - Novel mesoporous ferrite nanoparticles of ruthenium (RuFeO3) and cerium (CeFeO3) with large surface area were successfully fabricated by hydrothermal method and applied for the removal of fluoxetine from aqueous solution. The morphology and physicochemical properties of meso-porous metal ferrites were characterized by different analytical techniques. The obtained results showed that the particle size of 20–30 nm for meso-CeFeO3, and 80–100 nm for meso-RuFeO3 respectively. Study of the adsorption of fluoxetine over metal ferrite nanoparticles was explored using UV–vis spectroscopy at different experimental conditions such as temperature, pH, initial fluoxetine concentration and time. The adsorption data were fitted and analyzed with kinetic and different adsorption isotherm models, and the results showed that both the metal ferrites effectively adsorbed fluoxetine (>99%). The maximum adsorption capacity of 729.6 mg g−1 for CeFeO3, and 683.5 mg g−1 for RuFeO3 at neutral pH and at 25 °C were observed. The amount adsorbed over the surface of metal ferrite nanoparticles increased with increasing initial fluoxetine concentration, reaction time, and temperature, and the adsorption performance improved under neutral conditions (pH 7 and 8). The pseudo-second order kinetic and Langmuir isotherm models satisfactorily fitted the adsorption data, showing that the adsorption of fluoxetine involved physical adsorption through intermolecular electrostatic force between the metal ferrites and fluoxetine which is further confirmed by intra-particle diffusion model. The observed wide band/gap, 3.815eV for CeFeO3, and 3.360eV for RuFeO3 respectively showed their stability towards visible light suggesting their real sample applicability, recovery and reuse capability involving physisorption with fluoxetine molecules. In addition, the feasible adsorption process of fluoxetine is analyzed with its geometry that is determined by theoretical energy calculations using DFT.
KW - Adsorption studies
KW - DFT
KW - Ferrite nanoparticles
KW - Fluoxetine removal
UR - http://www.scopus.com/inward/record.url?scp=85104582332&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2021.04.064
DO - 10.1016/j.ceramint.2021.04.064
M3 - Artículo
AN - SCOPUS:85104582332
SN - 0272-8842
VL - 47
SP - 20544
EP - 20561
JO - Ceramics International
JF - Ceramics International
IS - 14
ER -