Enrique Rodriguez-Castellon

Enrique Rodriguez-Castellon
University of Malaga | UMA · Department of Inorganic Chemistry, Crystallography and Mineralogy

Ph.D.

About

795
Publications
153,164
Reads
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21,243
Citations
Additional affiliations
November 2003 - December 2003
Universidad Nacional de San Luis
Position
  • Professor
June 2001 - July 2001
Benemérita Universidad Autónoma de Puebla
Position
  • Professor
November 1980 - present
University of Malaga
Position
  • Professor (Full)

Publications

Publications (795)
Article
Full-text available
Cerium‐containing titania nano‐octahedra (CeTNOh) are obtained by ultrasonication‐hydrothermal synthesis of Ce‐containing titanate nanowires (0.35, 0.46, and 0.70 Ce mol %) from commercial TiO2 (Degussa P25). CeTNOh are tested as photocatalysts to degrade a target pollutant (ciprofloxacin) under simulated solar light and at mild conditions. CeTNOh...
Article
Full-text available
Textile wastewater containing dyes poses significant environmental hazards. Advanced oxidative processes, especially the heterogeneous photo-Fenton process, are effective in degrading a wide range of contaminants due to high conversion rates and ease of catalyst recovery. This study evaluates the heterogeneous photodegradation of the azo dyes Acid...
Article
Full-text available
NiO−CeO2 and NiO−CeO2−ZrO2 catalysts have been synthesized, electrochemically characterized (Mott‐Schottky (MS) measurements and Electrochemical Impedance Spectroscopy), physicochemically characterized (by N2 adsorption, XRD, Transmission Electron Microscopy and XPS) and tested in the N2O assisted ethane oxydehydrogenation. The use of low Zr‐loadin...
Article
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A series of nanospherical-shaped silicates containing heteroatoms (Al, Zr or Ti) were successfully synthesized using tetraethylorthosilicate (TEOS) or silica colloids as a silicon source. These metallosilicate nanospheres were used as silicon nutrients to obtain silicalite zeolites with micro-mesoporosity and improved textural properties. The resul...
Preprint
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One promising approach to addressing global warming involves capturing storing and reusing greenhouse gas emissions. Following separation, usually via adsorption, potential CO 2 emissions capture rates can reach up to 90%. Hence, It is crucial to enhance efficiency and reduce costs associated with CO 2 capture and utilization processes. This study...
Article
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In this study chitin derived from shrimp shells was used in the design of heterogeneous Pd‐based catalysts for Heck and Suzuki‐Miyaura cross‐coupling reactions. The synthesis of Pd nanoparticles supported on N‐doped carbons was performed through different approaches, including a sustainable mechanochemical approach, by using a twin‐screw extruder....
Preprint
Full-text available
Textile wastewater containing dyes pose significant environmental hazards. Advanced oxidative processes, especially the heterogeneous photo-Fenton process, are effective in degrading a wide range of contaminants due to high conversion rates and ease of catalyst recovery. This study evaluates the photocatalytic degradation of azo dyes Acid Red 18 (A...
Article
The oxidation of representative bio‐based benzyl‐type alcohols has been successfully carried out in a multiphase (MP) system comprised of three mutually immiscible liquid components as water, isooctane, and a hydrophobic ionic liquid as methyltrioctylammonium chloride ([N8881][Cl]), a heterogeneous catalyst (either ad‐hoc synthesized carbon‐support...
Article
Developing high-performance catalysts for the direct production of isobutanol through the Guerbet reaction is a challenge today, due to the potential of isobutanol as fuel. The present study describes the synthesis and characterization of Cu-supported hydroxyapatite catalysts. The synthesis of isobutanol has been investigated through batch experime...
Article
Gamma-valerolactone (GVL) is a useful chemical with various applications obtained from the hydrolysis of lignocellulosic biomass. The present study aims to explore the synthesis of GVL through the hydrogenation of ethyl levulinate (EL) using a palladium–manganese bimetallic catalyst immobilized on a dendritic fibrous nanosilica (Pdx%–Mny%/DFNS). Th...
Preprint
Full-text available
A series of nanospherical shaped silicates containing heteroatoms (Al, Zr or Ti) were successfully synthesized using TEOS or silica colloids as silicon source. These metallosilicate nanospheres were used as silicon nutrients to obtain silicalite zeolites having micro-mesoporosity with improved textural properties. The results demonstrated that TEOS...
Article
Full-text available
This study systematically evaluates fluorine‐containing materials with varying compositions of K, Al, Co, Cu, Mg, and Zn as catalysts for glycerol oligomerization. Comprehensive analyses were conducted for all of the catalysts, considering their structural, compositional, morphological characteristics, and basicity, to understand them in greater de...
Article
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The recovery or degradation of organic wastes in the circular economy concept continues to be environmental protection challenges. In this study, we proposed a metal catalyst free production of useful non-doped (CDs) and nitrogen doped carbon dots (N-CDs) nanoparticles, generated from a greener hydrothermal top-down method, using paper scraps solid...
Article
Inorganic black materials possessing hydrophilicity are scarce but can be of great importance in areas such as solar water evaporation and solar steam generation. Herein, for the first time, transition‐metal selenite hydrates (specifically, Earth‐abundant metals Ni and Co) not only possess high solar absorbance (>96 %) in the solar spectral range (...
Article
This study aims to investigate the impact of carotenes on the oxidation of palm oil under conditions resembling those encountered in industrial settings. We conducted experiments to assess the oxidation of palm oil during the adsorption of carotene (bleaching) using two commercial bleaching earths (ABE and NBE), sepiolite, and two newly synthesized...
Article
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Five phyllosilicates (kaolinite, montmorillonite, saponite, sepiolite and palygorskite) have been selected as starting materials for the synthesis of zeolites. Among them, kaolinite and montmorillonite display the lowest Si/Al molar ratio leading to aluminosilicates with high crystallinity. Thus, the hydrothermal treatment under basic conditions fo...
Article
In this study, metal-doped niobates and perovskites were obtained by a solid state reaction. The solids were evaluated in the esterification of glycerol in the presence of acetic acid to...
Article
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Ion exchange is the reversible exchange of ions in which there is no significant change in the solid structure. Zeolites are aluminosilicates with a defined structure, including cavities occupied by cations and water molecules, both with great freedom of movement, which makes cation exchange possible. In this study, small-pore zeolites chabazite (C...
Article
Environmental pollution is a complex problem that threatens the health and life of animal and plant ecosystems on the planet. In this respect, the scientific community faces increasingly challenging tasks in designing novel materials with beneficial properties to address this issue. This study describes a simple yet effective synthetic protocol to...
Article
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Valerolactone (GVL) can be obtained by efficient hydrogenation of levulinic acid using ruthenium‐based catalysts in an aqueous medium. This paper reports an in‐depth study on the activity and selectivity of Ru catalysts supported on zirconia‐alumina, focusing on the effect of Ru concentration (0.5, 1.5 and 3 wt. % of Ru) and the selection of operat...
Article
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MXenes, a family of two-dimensional (2D) transition metal carbides, have been discovered as exciting candidates for various energy storage and conversion applications, including green hydrogen production by water splitting. Today, these materials mostly remain interesting objects for in-depth fundamental studies and scientific curiosity due to issu...
Article
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This research pioneers the application of microwave irradiation as an innovative strategy for one-pot synthesis and surfactant elimination (cetyltrimethylammonium bromide—CTAB) from MCM-41, introducing a rapid and efficient methodology. MCM-41 silica is widely utilized in various applications due to its unique textural and structural properties. No...
Article
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The upgrading of a benzyl-type alcohols was explored via an orthogonal tandem sequence comprised of a first oxidative step producing the corresponding aldehydes, and a subsequent reductive amination to achieve...
Article
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The removal of dyes from effluents of textile industries represents a technological challenge, due to their significant environmental impact. The application of halloysite (Hal) and palygorskite (Pal) clay minerals as adsorbents for the removal of Congo red (CR) and methylene blue (MB) was evaluated in this work. The materials were applied both in...
Article
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This research is aimed at evaluating strategies for the adsorption and recovery of anthocyanins present in purple cabbage using natural and modified clays as adsorbent. In the batch adsorption experiments, the anthocyanin extracts were put in contact with the adsorbents, and different parameters were evaluated to determine the best conditions for t...
Article
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Simple and cost-effective procedures for the direct integration of ferroelectric perovskite oxides into Ni structures are necessary to realize related multifunctional metallic microelectromechanical systems, such as dual-source energy harvesters. This is especially difficult in the case of lead-containing morphotropic phase boundary materials for h...
Article
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This research explores the integration of DUT-67 metal organic frameworks into polyethyleneimine-based hydrogels to assemble a composite system with enough mechanical strength, pore structure and chemical affinity to work as a sorbent for water remediation. By varying the solvent-to-modulator ratio in a water-based synthesis path, the particle size...
Article
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The utilization of dye adsorption through metal-organic frameworks represents an eco-friendly and highly effective approach in real water treatment. Here, ultrasound assisted adsorption approach was employed for the remediation of three dyes including methylene blue (MB), malachite green (MG), and congo red (CR) from real water samples using zircon...
Article
In this work, a nanocomposite structured magnetic metal–organic framework named as Fe3O4@UiO-66-NH2 was prepared via a simple hydrothermal approach. The as-mentioned nanocomposite was characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscop...
Article
The aim of this work was to characterize and propose the use of new heterogeneous catalysts based on montmorillonite (Mt) materials bearing organic copper metal complexes to remove a variety of emerging pollutants such as antibiotics, azo dyes and antimycotics. The incorporation of Cu2+ ions and their coordination by 4-methyl-5-imidazolecarboxaldeh...
Article
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The glycerol conversion into acetol using Fe, Al and Cu-based oxides was investigated. XRD results indicate the formation of nanosized particles with high phase dispersion, however, Raman, Mössbauer, ²⁷Al NMR and XPS spectroscopies suggest the presence of iron(iii) oxide, Al2O3 and CuO phases. The FTIR with pyridine adsorption revealed high Lewis a...
Article
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Wipe wastes have been used as a cellulosic source to synthesize biochars. Prior to the synthesis of the adsorbents by the pyrolysis of wipes wastes, this waste was treated to remove the pathogenic agents. Then, the wipe wastes were pyrolyzed between 500 and 900 °C to obtain biochars, whose microporosity increased proportionally to the pyrolysis tem...
Article
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CO2 hydrogenation to methanol has the potential to serve as a sustainable route to a wide variety of hydrocarbons, fuels and plastics in the quest for net zero. Synergistic Pd/In2O3 (Palldium on Indium Oxide) catalysts show high CO2 conversion and methanol selectivity, enhancing methanol yield. The identity of the optimal active site for this react...
Article
CO2 hydrogenation to methanol has the potential to serve as a sustainable route to a wide variety of hydrocarbons, fuels and plastics in the quest for net zero. Synergistic Pd/In2O3 catalysts show high CO2 conversion and methanol selectivity, enhancing methanol yield. The identity of the optimal active site for this reaction is unclear, either as a...
Article
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The global demand for energy and industrial growth has generated an exponential use of fossil fuels in recent years. It is well known that carbon dioxide (CO2) is mainly produced, but not only from fuels, which has a negative impact on the environment, such as the increasing emission of greenhouse gases. Thus, thinking about reducing this problem,...
Article
This investigation aims to remove sulfur-based compounds (SBCs) by a combination of absorptive and oxidative desulfurization processes. Accordingly, a series of novel Bi-based bifunctional photo electrocatalysts is prepared by thermal method and used to remove dibenzothiophene (DBT) as a source of SBC from n-heptane as model fuel. The catalysts are...
Preprint
Full-text available
MCM-41 silica is widely utilized in various applications due to its unique textural and structural properties. Nonetheless, the presence of residual surfactant after synthesis poses a challenge to its effective application. This study explores the utilization of microwave irradiation as a promising approach for the one-pot synthesis and surfactant...
Article
Full-text available
The potentialities of mechanochemistry trough extrusion have been investigated for the design of nanosized catalysts and their use in C-C bond-forming reactions. The mechanochemical approach proved successful for the synthesis of supported palladium nanoparticles with mean diameter within 6–10 nm, achieved by the reduction of Pd(II) acetate with et...
Article
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Tri-s-triazine heterostructures have been prepared using different mass ratios of g-C3N4, melem, mellitic trianhydride (MTA), and graphene as precursors. The heterostructures were characterized by elemental analysis (CHN), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), spe...
Article
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This study characterized and statistically evaluated the influence of three parameters that potentially affect the synthesis of Ag2MoO4, which have not previously been investigated in conjunction. The study focused on the concentration of a dispersant (polyvinylpyrrolidone, PVP, mmol⁻¹), aging time (h), and pH to evaluate the effects of these facto...
Article
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In this work, the catalytic performance of clinoptilolite (CLIN) and SBA-15 catalysts, doped with Fe and Cu, was evaluated in the selective catalytic reduction of NO using NH3 as a reducing agent (SCR-NH3). Both Cu-CLIN and Fe-CLIN were obtained by ion-exchange using natural clinoptilolite zeolite originating from the Hrabovec deposit (northeast Sl...
Article
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The demand for sustainable and low-cost materials for wastewater treatment is increasing considerably. In this scenario, geopolymers have gained great interest, due to their good mechanical properties, their ability to be produced from industrial waste and their adsorbent or catalytic properties. In this study, novel magnetic mining waste based-geo...