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Listar por palabra clave "Photolysis"

Mostrando ítems 1-17 de 17

A photophysical approach to investigate the photooxidation mechanism of pesticides: Hydroxyl radical versus electron transfer

Marín García, Mª Luisa; Lhiaubet, Virginie Lyria; Santos-Juanes Jordá, Lucas; Soler Escoda, Juan Miguel; Gomis Vicens, Juan; Arques Sanz, Antonio; Amat Payá, Ana María; Miranda Alonso, Miguel Ángel (Elsevier, 2011-03-14)

[EN] The role of hydroxyl radical in different solar photocatalytic processes, namely photo-Fenton, titanium dioxide-based oxidation and organic photocatalysis (triphenylpyrylium) has been investigated. Using a methodology ...
Conversion of Methane into C1 Oxygenates by Deep-UV Photolysis on SolidSurfaces: Influence of the Nature of the Solid and Optimization of PhotolysisConditions

Sastre Calabuig, Francesc; Fornes Seguí, Vicente; Corma Canós, Avelino; García Gómez, Hermenegildo (Wiley-VCH Verlag, 2012)

[EN] Deep-UV photolysis (either 165 or 185 nm) of surface hydroxy groups leads to homolytic O H bondcleavage with the generation of oxyl radicals that can initiate the room-temperature radical-chain methane activation. ...
Emerging Photochemical Processes Involving Iron for Wastewater Treatment

Sciscenko, Iván Matías (Universitat Politècnica de València, 2021-11-22)

[ES] Los procesos (foto-)Fenton fueron empleados para degradar fluoroquinolonas (FQ) (una clase de antibióticos sintéticos considerados CEC) como contaminantes modelo en diferentes condiciones: pH (3 - 8), concentración ...
Enhancement of the catalytic activity of supported gold nanoparticles for the fenton reaction by light

Navalón Oltra, Sergio; De Miguel de la Torre, Maykel; Martín González, Roberto; Alvaro Rodríguez, Maria Mercedes; García Gómez, Hermenegildo (American Chemical Society, 2011)

[EN] Laser flash photolysis of supported gold nanopar-ticles exciting at the surface plasmon band (532 nm) has allowed in the case of Au/CeO 2 and Au/OH-npD (OH-npD: Fenton-treated diamond nanoparticles) detection of ...
Estudio de degradación de nanopartículas de grafeno presentes en las aguas residuales textiles mediante técnicas de oxidación avanzada

Ferre Moltó, Rubén (Universitat Politècnica de València, 2022-10-26)

[ES] Cada vez es más habitual el uso de nanopartículas en textiles para aportarles diferentes propiedades técnicas. Estas nanopartículas pueden acabar en las aguas de proceso y de lavado en cantidades considerables, y ...
Ion-exchanged geopolymer for photocatalytic degradation of a volatile organic compound

Gasca-Tirado, J.R.; Manzano-Ramirez, A.; Vazquez-Landaverde, P. A.; Herrera-Diaz, E. I.; Rodriguez-Ugarte, M. E.; Rubio-Avalos, J. C.; Amigó Borrás, Vicente; Chavez-Paez, M. (Elsevier, 2014-11-01)

In thepresentworkitisshownhowgeopolymerscanbeusedtocontrolindoorandoutdoorair pollution byphotolysisof2-ButanoneasaVolatileOrganicCompound(VOC).Anionexchange procedurewasfollowedtoincorporateTiO2 into ageopolymer(IEG),an ...
Novel Oxybenzone Photolabile Protecting Group for Carbonyl Compounds

Fernández, Benjamín Matthew (Universitat Politècnica de València, 2021-10-29)

[ES] Se está estudiando una nueva clase de grupo protector fotolábil (PPG) basada en el uso de filtro solares. Los PPG son unidades químicas que permiten la protección de grupos funcionales y su posterior fotoliberación. ...
Photooxygenation mechanisms in naproxen-amino acid linked systems

Vayá Pérez, Ignacio; Andreu Ros, María Inmaculada; Jiménez Molero, María Consuelo; Miranda Alonso, Miguel Ángel (Royal Society of Chemistry, 2014)

The photooxygenation of model compounds containing the two enantiomers of naproxen (NPX) covalently linked to histidine (His), tryptophan (Trp) and tyrosine (Tyr) has been investigated by steady state irradiation, ...
Probing lipid peroxidatin by using linoleic acid and benzophenone

Andreu Ros, María Inmaculada; Neshchadin, Dmytro; Rico Inglada, Enrique; Griesser, Markus; Samadi, Abdelouahid; Morera Bertomeu, Isabel María; Gescheidt, Georg; Miranda Alonso, Miguel Ángel (Wiley-VCH Verlag, 2011-07-26)

A thorough mechanistic study has been performed on the reaction between benzophenone (BZP) and a series of 1,4-dienes, including 1,4-cyclohexadiene (CHD), 1,4-dihydro-2-methylbenzoic acid (MBA), 1,4-dihydro-1,2-dimethylbenzoic ...
Room temperature design of Ce(IV)-MOFs: from photocatalytic HER and OER to overall water splitting under simulated sunlight irradiation

Dai, Shan; Montero-Lanzuela, Eva; Tissot, Antoine; Garcia-Baldovi, Hermenegildo; García Gómez, Hermenegildo; Navalón Oltra, Sergio; Serre, C. (The Royal Society of Chemistry, 2023-03-29)

[EN] The development of MOF-based efficient and reusable catalysts for hydrogen production under simulated sunlight irradiation, especially through overall water splitting, remains challenging. This is mainly due to either ...
Seeking the mechanism responsible for fluoroquinolone photomutagenicity: a pulse radiolysis, steady-state, and laser flash photolysis study

Soldevila Serrano, Sonia; Cuquerella Alabort, Maria Consuelo; Lhiaubet-Vallet, Virginie; Edge, Ruth; Bosca Mayans, Francisco (Elsevier, 2014-02)

The mechanism responsible for the remarkable photomutagenicity of fluoroquinolone (FQ) antibiotics remains unknown. For this reason, it was considered worthwhile to study in detail the interactions between DNA and a ...
Selective room-temperature transformation of methane to C1 Oxygenates by deep UV Photolysis over zeolites

Sastre Calabuig, Francesc; Fornes Seguí, Vicente; Corma Canós, Avelino; García Gómez, Hermenegildo (American Chemical Society, 2011-11)

[EN] Methane can directly be transformed into liquid C 1 oxygenated products with selectivities above 95% at 13% conversion by deep UV photocatalysis, in the presence of H 2O and air. Pure silica zeolites, and more ...
Significant role of iron on the fate and photodegradation of Enrofloxacin

Sciscenko, Iván; Arqués Sanz, Antonio; Varga, Zsuzsanna; Bouchonnet, Stephane; Monfort, Olivier; Brigante, Marcello; Mailhot, Gilles (Elsevier, 2021-05)

[EN] Enrofloxacin (ENR) belongs to the fluoroquinolone (FQ) antibiotics family, which are contaminants of emerging concern frequently found in effluents. Although many works studying photo-Fenton process for FQ degradation ...
Sunlight-assisted fenton reaction catalyzed by gold supported on diamond nanoparticles as pretreatment for biological degradation of aqueous phenol solutions

Navalón Oltra, Sergio; Martín González, Roberto; Alvaro Rodríguez, Maria Mercedes; García Gómez, Hermenegildo (Wiley-VCH Verlag, 2011-05-23)

Gold nanoparticles supported on Fenton-treated diamond nanoparticles (Au/DNPs) have been reported as one of the most efficient solid catalysts effecting the Fenton reaction, achieving a turnover number (TON) as high as 321 ...
Use of Fluorescence Spectroscopy and Chemometrics to Visualise Fluoroquinolones Photodegradation Major Trends: A Confirmation Study with Mass Spectrometry

Sciscenko, Iván Matías; García-Negueroles, Paula; Amat Payá, Ana María; Oller, Isabel; Escudero-Oñate, Carlos; Ferrando-Climent, Laura; Arqués Sanz, Antonio (MDPI AG, 2023-01)

[EN] In this work, we employed EEM-PARAFAC (fluorescence excitation-emission matrices-parallel factor analysis) as a low-cost tool to study the oxidation pathways of (fluoro)quinolones. Amounts of 12.5 ¿M of enrofloxacin ...
Waste cleaning waste: Photodegradation of monochlorophenols in the presence of waste-derived photosensitizer

Avetta, P.; Bella, F.; Prevot, A. Bianco; Laurenti, E.; Montoneri, E.; Arques Sanz, Antonio; Carlos, L. (American Chemical Society, 2013)

Soluble bio-based substances (SBO) have been isolated from urban waste. Their structural similarity with natural organic matter suggested exploring their activity in the photodegradation of organic substrates. In this ...
Waste sourced bio-based substances for solar-driven wastewater remediation: Photodegradation of emerging pollutants

Gomis Vicens, Juan; Prevot, A. B.; Montoneri, E.; Gonzalez, M. C.; Amat Payá, Ana María; Martire, D. O.; Arques Sanz, Antonio; Carlos, L. (Elsevier, 2014-01-01)

The effect of soluble bio-based organic substances (SBO) isolated from urban wastes on photochemical wastewater treatments was investigated using a mixture of six emerging pollutants (EPs), namely acetaminophen, caffeine, ...