Listar por autor "Santaballa, J. Arturo"
Mostrando ítems 1-17 de 17
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A Simple Risk Assesment Method for Continental Waters, Based on Screening Contaminants of Emerging Concern
Santaballa, J. Arturo; Vozňáková, Alena; Marín, Zenydia; Canle, Moisés (Wiley, 2024)[Abstract] With the aim to build a simple alert system that may be of extended use, a screening for contaminants of emerging concern (CECs) is carried out in the Mero-Barcés hydrographic watershed, in Cecebre, A Coruña, ... -
A Theoretical Study on the Mechanism of the Base-Promoted Decomposition of N-chloro,N-methylethanolamine
Ramos, Daniel R.; Castillo, Raquel; Canle, Moisés; García-Dopico, María-Victoria; Andrés, Juan; Santaballa, J. Arturo (Royal Society of Chemistry (Gran Bretaña), 2009-02-09)[Abstract] The first step of the base-promoted decomposition of N-chloro,N-methylethanolamine in aqueous solution (CH3N(Cl)CH2CH2OH + HO−→ imine + Cl− + H2O (+ CH2O) → amine + aldehyde) is investigated at the MP2/6-31++G(d,p) ... -
An Efficient Green Photo-Fenton System for the Degradation of Organic Pollutants. Kinetics of Propranolol Removal From Different Water Matrices
Remache, W.; Ramos, Daniel R.; Mammeri, Lamia; Boucheloukh, Hadjira; Marín, Zenydia; Belaidi, S.; Sehili, Tahar; Santaballa, J. Arturo; Canle, Moisés (Elsevier, 2022-01-06)[Abstract] We report on the degradation of aqueous propranolol (PRO) in a heterogeneous system with natural iron oxide (N.I.O.) and oxalic acid (OAA) under near UV–Vis irradiation. Photolysis experiments showed ca. 65% ... -
Cobalt Impregnation on Titania Photocatalysts Enhances Vis Phenol Photodegradation
Belekbir, Soukayna; El Azzouzi, Mohammed; Rodríguez-Lorenzo, Laura; El Hamidi, Adnane; Santaballa, J. Arturo; Canle, Moisés (MDPI, 2023-06-01)[Abstract] One of the main challenges of photocatalysis is to find a stable and effective photocatalyst, that is active and effective under sunlight. Here, we discuss the photocatalytic degradation of phenol as a model ... -
Common Reactivity and Properties of Heme Peroxidases: A DFT Study of Their Origin
Ramos, Daniel R.; Furtmüller, Paul G.; Obinger, Christian; Peña-Gallego, Ángeles; Pérez-Juste, Ignacio; Santaballa, J. Arturo (MDPI, 2023-01-28)[Abstract] Electronic structure calculations using the density-functional theory (DFT) have been performed to analyse the effect of water molecules and protonation on the heme group of peroxidases in different redox (ferric, ... -
Degradation of Aqueous Ketoprofen by Heterogeneous Photocatalysis Using Bi2S3/TiO2–Montmorillonite Nanocomposites Under Simulated Solar Irradiation
Djouadi, Lila; Khalaf, Hussein; Boukhatem, Horiya; Boutoumi, Hocine; Kezzime, Amina; Santaballa, J. Arturo; Canle, Moisés (Elsevier, 2018-09-13)[Abstract] The photocatalytic degradation of Ketoprofen (KP), 2-(3-benzoylphenyl)-propionic acid was studied under near UV–Vis irradiation (NUV-Vis) using supported photocatalysts. Bi2S3/TiO2-montmorillonite (Bi2S3/TiO2-Mt) ... -
Differential Features of Short-Lived Intermediates: Structure, Properties and Reactivity
Canle, Moisés; Fernández-Pérez, María-Isabel; Santaballa, J. Arturo (Elsevier, 2020-10-22)[Abstract] Some general features of short-lived intermediates that can be useful when facing mechanistic studies or other projects involving these species are briefly revised, with special attention to properties of neutral ... -
Effect of Ionizing Radiation on Human Myeloperoxidase: Reaction With Hydrated Electrons
Ramos, Daniel R.; Fernández-Pérez, María-Isabel; Furtmüller, Paul G.; Obinger, Christian; García-Dopico, María-Victoria; Santaballa, J. Arturo; Canle, Moisés (Elsevier, 2021-11-27)[Abstract] Myeloperoxidase (MPO) is a myeloid-lineage restricted enzyme largely expressed in the azurophilic granules of neutrophils. It catalyses the formation of reactive oxygen species, mainly hypochlorous acid, ... -
Face-Fusion of Icosahedral Boron Hydride Increases Affinity to γ‐Cyclodextrin: closo,closo‐[B₂₁H₁₈]⁻ as an Anion with Very Low Free Energy of Dehydration
Assaf, Khaleel I.; Holub, Josef; Bernhardt, Eduard; Oliva‐Enrich, Josep M.; Fernández-Pérez, María-Isabel; Canle, Moisés; Santaballa, J. Arturo; Fanfrlík, Jindřich; Hnyk, Drahomír; Nau, Werner M. (Wiley, 2020-03-12)[Abstract] The supramolecular recognition of closo,closo‐[B₂₁H₁₈]⁻ by cyclodextrins (CDs) has been studied in aqueous solution by isothermal titration calorimetry and nuclear magnetic resonance spectroscopy. These solution ... -
Improved Photocatalyzed Degradation of Phenol, as a Model Pollutant, over Metal-Impregnated Nanosized TiO₂
Belekbir, S.; El Azzouzi, Mohammed; El Hamidi, A.; Rodríguez-Lorenzo, Laura; Santaballa, J. Arturo; Canle, Moisés (MDPI, 2020-05-22)[Abstract] Photocatalyzed degradation of phenol in aqueous solution over surface impregnated TiO₂ (M = Cu, Cr, V) under UV-Vis (366 nm) and UV (254 nm) irradiation is described. Nanosized photocatalyts were prepared from ... -
Inactivation of E. Coli and S. Aureus by Novel Binary Clay/Semiconductor Photocatalytic Macrocomposites Under UVA and Sunlight Irradiation
Aguilar, Silvio D.; Guerrero Sánchez, Briggitte Alexandra; Benítez, Ángel; Ramos, Daniel R.; Santaballa, J. Arturo; Canle, Moisés; Rosado, Daniel; Moreno-Andrés, Javier (Elsevier, 2023-09-08)[Abstract] The disinfection efficiency of several novel photocatalytic macrocomposites made of Ecuadorian clay mixed with two semiconductor materials (TiO2, ZnO) has been evaluated with Staphylococcus aureus and Escherichia ... -
Mechanical Stability Is Key for Large-Scale Implementation of Photocatalytic Surface-Attached Film Technologies in Water Treatment
Ramos, Daniel R.; Iazykov, M.; Fernández-Pérez, María-Isabel; Santaballa, J. Arturo; Canle, Moisés (Frontiers, 2021-10-18)[Abstract] Replacement of classical tertiary water treatment by chemical-free sunlight-driven photocatalytic units has been often proposed. Photocatalysts are required to be cost-effective, inert, chemically stable, reusable, ... -
Photo-Immobilization of Proteins on Carbons
Humeres, Eduardo; Canle, Moisés; Lopes, Cristiane Nunes; Santaballa, J. Arturo; Debacher, N. A.; Moreira, Regina de F. P. M.; Safin, Vladimir; Fernández-Pérez, María-Isabel (Elsevier, 2019-11-13)[Abstract] The photofunctionalization of three different carbons with two proteins was studied at room temperature. Water solutions of bovine serum albumin, BSA, and α-amylase, AA, were photolyzed at 21 °C in the presence ... -
Preparation, Characterization and Testing of a Bulky Non-supported Photocatalyst for Water Pollution Abatement
Aguilar, Silvio D.; Ramos, Daniel R.; Santaballa, J. Arturo; Canle, Moisés (Elsevier, 2023-03-15)[Abstract] An innovative bulky photocatalyst for water decontamination has been developed. The semiconductor (TiO2) is homogeneously distributed in an aggregating material through the whole piece. This design prevents the ... -
Removal of Paracetamol in the Presence of Iron(III) Complexes of Glutamic and Lactic Acid in Aqueous Solution Under NUV Irradiation
Benssassi, Mohamed El Hadi; Mammeri, Lamia; Talbi, Khouloud; Lekikot, Bouchra; Sehili, Tahar; Santaballa, J. Arturo; Canle, Moisés (Elsevier, 2021-01-05)[Abstract] Low concentrations of drugs and their metabolites occurring on the aquatic environment are of significant concern due to their potential effects. This work reports on the removal from aqueous solution, of ... -
Simulated Sunlight Photodegradation of 2-Mercaptobenzothiazole by Heterogeneous Photo-Fenton Using a Natural Clay Powder
Redouane-Salah, Zakaria; Malouki, Moulay Abderrahmane; Khennaoui, Badis; Santaballa, J. Arturo; Canle, Moisés (Elsevier, 2018-02-24)[Abstract] The efficiency of 2-mercaptobenzothiazole (MBT) degradation by heterogeneous photo-Fenton process using local natural clay powder (NCP) is described. Experiments were conducted at natural pH with a batch reactor ... -
Understanding the Mechanism of Base-Assisted Decomposition of (N-halo),N-alkylalcoholamines
Andrés, Juan; Armesto Barbeito, Xosé Luís; Canle, Moisés; García-Dopico, María-Victoria; Ramos, Daniel R.; Santaballa, J. Arturo (Royal Society of Chemistry (Gran Bretaña), 2003-09-29)[Abstract] The base-assisted decomposition of (N-X),N-methylethanolamine (X = Cl, Br) takes place mainly through two concurrent processes: a fragmentation and an intramolecular elimination. The global process follows second ...