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Raúl Suárez Parra
Institute of Renewable Energies, National Autonomous University of Mexico, Morelos 62580, Mexico

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Priv. Xochicalco s/n, Col. Centro, Temixco Morelos, México

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Journal article
Published: 28 April 2021 in Materials
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The FeBTC metal–organic framework (MOF) incorporated with magnetite is proposed as a novel material to solve water contamination with last generation pollutants. The material was synthesized by in situ solvothermal methods, and Fe3O4 nanoparticles were added during FeBTC MOF synthesis and used in drug adsorption. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and Raman spectroscopy characterized the materials, with N2-physisorption at 77 K. Pseudo-second-order kinetic and Freundlich models were used to describe the adsorption process. The thermodynamic study revealed that the adsorption of three drugs was a feasible, spontaneous exothermic process. The incorporation of magnetite nanoparticles in the FeBTC increased the adsorption capacity of pristine FeBTC. The Fe3O4–FeBTC material showed a maximum adsorption capacity for diclofenac sodium (DCF), then by ibuprofen (IB), and to a lesser extent by naproxen sodium (NS). Additionally, hybridization of the FeBTC with magnetite nanoparticles reinforced the most vulnerable part of the MOF, increasing the stability of its thermal and aqueous media. The electrostatic interaction, H-bonding, and interactions in the open-metal sites played vital roles in the drug adsorption. The sites’ competition in the multicomponent mixture’s adsorption showed selective adsorption (DCF) and (NS). This work shows how superficial modification with a low-surface-area MOF can achieve significant adsorption results in water pollutants.

ACS Style

Aldo Castañeda Ramírez; Elizabeth Rojas García; Ricardo López Medina; José Contreras Larios; Raúl Suárez Parra; Ana Maubert Franco. Selective Adsorption of Aqueous Diclofenac Sodium, Naproxen Sodium, and Ibuprofen Using a Stable Fe3O4–FeBTC Metal–Organic Framework. Materials 2021, 14, 2293 .

AMA Style

Aldo Castañeda Ramírez, Elizabeth Rojas García, Ricardo López Medina, José Contreras Larios, Raúl Suárez Parra, Ana Maubert Franco. Selective Adsorption of Aqueous Diclofenac Sodium, Naproxen Sodium, and Ibuprofen Using a Stable Fe3O4–FeBTC Metal–Organic Framework. Materials. 2021; 14 (9):2293.

Chicago/Turabian Style

Aldo Castañeda Ramírez; Elizabeth Rojas García; Ricardo López Medina; José Contreras Larios; Raúl Suárez Parra; Ana Maubert Franco. 2021. "Selective Adsorption of Aqueous Diclofenac Sodium, Naproxen Sodium, and Ibuprofen Using a Stable Fe3O4–FeBTC Metal–Organic Framework." Materials 14, no. 9: 2293.

Journal article
Published: 04 February 2020 in Materials
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To date, the formation mechanisms of TiO2, as well as its heterostructures, have not been clarified. Moreover, detailed research on the transition from a tetragonal anatase phase to the monoclinic phase of the TiO2(B) phase and their interface structure has been quite limited until now. In the present study, we report on the sonochemical synthesis of TiO2-anatase with a crystallite size of 5.2 ± 1.5 nm under different NaOH concentrations via the hydrothermal method. The use of alkaline solution and the effect of the temperature and reaction time on the formation and structural properties of TiO2-anatase nanopowders were studied. The effects of NaOH concentration on the formation and transformation of titanate structures are subject to thermal effects that stem from the redistribution of energy in the system. These mechanisms could be attributed to three phenomena: (1) the self-assembly of nanofibers and nanosheets, (2) the Ostwald ripening process, and (3) the self-development of hollow TiO2 mesostructures.

ACS Style

Berenice Victoria Dimas; Isaías Hernández Pérez; Vicente Garibay Garibay Febles; Lucía Díaz Barriga Díaz Barriga Arceo; Raúl Suárez Suárez Parra; JESÚS NOÉ RIVERA OLVERA; Ricardo Luna Paz; Dulce Viridiana Melo Melo Máximo; Leonardo González González Reyes. Atomic-Scale Investigation on the Evolution of Tio2-Anatase Prepared by a Sonochemical Route and Treated with NaOH. Materials 2020, 13, 685 .

AMA Style

Berenice Victoria Dimas, Isaías Hernández Pérez, Vicente Garibay Garibay Febles, Lucía Díaz Barriga Díaz Barriga Arceo, Raúl Suárez Suárez Parra, JESÚS NOÉ RIVERA OLVERA, Ricardo Luna Paz, Dulce Viridiana Melo Melo Máximo, Leonardo González González Reyes. Atomic-Scale Investigation on the Evolution of Tio2-Anatase Prepared by a Sonochemical Route and Treated with NaOH. Materials. 2020; 13 (3):685.

Chicago/Turabian Style

Berenice Victoria Dimas; Isaías Hernández Pérez; Vicente Garibay Garibay Febles; Lucía Díaz Barriga Díaz Barriga Arceo; Raúl Suárez Suárez Parra; JESÚS NOÉ RIVERA OLVERA; Ricardo Luna Paz; Dulce Viridiana Melo Melo Máximo; Leonardo González González Reyes. 2020. "Atomic-Scale Investigation on the Evolution of Tio2-Anatase Prepared by a Sonochemical Route and Treated with NaOH." Materials 13, no. 3: 685.

Journal article
Published: 20 October 2019 in Sustainability
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The objective of this study is to identify Mexican nontoxic ecotypes of Jatropha curcas with potential for a sustainable agriculture practice to produce biodiesel and food products through a methodology and criteria of sustainability. In a rural region of Morelos state in central México, nine Mexican ecotypes of Jatropha curcas were evaluated in an experimental plantation with minimal water resources and fertilization. The experimental trial was assessed in terms of (1) toxicity, (2) growth and survival of the plants, (3) yield of seed, (4) residual biomass production, (5) oil characteristics for biodiesel production, (6) nutrimental properties of the seeds, and (7) changes in the chemical properties of the soil. Finally, two outstanding nontoxic ecotypes were identified as the most suitable for the establishment of Jatropha curcas crops to produce biodiesel and, at the same time, for food products using the de-oiled endosperm cake, for energy production from the residual biomass and for improvement of soil properties in marginal lands of rural regions of Morelos state.

ACS Style

Guadalupe Pérez; Jorge Islas; Mirna Guevara; Raúl Suárez. The Sustainable Cultivation of Mexican Nontoxic Jatropha Curcas to Produce Biodiesel and Food in Marginal Rural Lands. Sustainability 2019, 11, 5823 .

AMA Style

Guadalupe Pérez, Jorge Islas, Mirna Guevara, Raúl Suárez. The Sustainable Cultivation of Mexican Nontoxic Jatropha Curcas to Produce Biodiesel and Food in Marginal Rural Lands. Sustainability. 2019; 11 (20):5823.

Chicago/Turabian Style

Guadalupe Pérez; Jorge Islas; Mirna Guevara; Raúl Suárez. 2019. "The Sustainable Cultivation of Mexican Nontoxic Jatropha Curcas to Produce Biodiesel and Food in Marginal Rural Lands." Sustainability 11, no. 20: 5823.