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Browsing by Subject "Visible light"

Now showing items 1-20 of 22

Aerobic Visible-Light-Driven Borylation of Heteroarenes in a Gel Nanoreactor

Herrera-Luna, Jorge Carlos; Díaz Díaz, David; Abramov, Alex; Encinas Perea, Susana; Jiménez Molero, María Consuelo; Pérez-Ruiz, Raúl (American Chemical Society, 2021-03-19)

[EN] Heteroarene boronate esters constitute valuable intermediates in modern organic synthesis. As building blocks, they can be further applied to the synthesis of new materials, since they can be easily transformed into ...
Biomimetic photooxidation of noscapine sensitized by a riboflavin derivative in water: The combined role of natural dyes and solar light in environmental remediation

Pavanello, Alice; Fabbri, Debora; Calza, Paola; Battiston, Debora; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (Elsevier, 2022-04)

[EN] Noscapine (NSC) is a benzyl-isoquinoline alkaloid discovered in 1930 as an antitussive agent. Recently, NSC has also been reported to exhibit antitumor activity and, according to computational studies, it is able to ...
Characterization of the Spectrum of Solar Irradiance under Different Crop Protection Coverings in Mediterranean Conditions and Effect on the Interception of Photosynthetically Active Radiation

Gurrea-Ysasi, Gonzalo; Blanca Giménez, Vicente; Fita Fernández, Inmaculada Concepción; Fita, Ana; Prohens Tomás, Jaime; Rodríguez Burruezo, Adrián (AcademicPres (EAP) Publishing House, 2019)

[EN] Plants use visible light and part of adjacent ultraviolet and near infrared regions for photosynthesis. Crop protection coverings enable plant cultivation in areas or seasons not suitable open field. However, the use ...
Co-doped hydroxyapatite as photothermal catalyst for selective CO2 hydrogenation

Peng, Yong; Szalad, Horatiu; Nikacevic, Pavle; Gorni, Giulio; Goberna-Ferrón, Sara; Simonelli, Laura; Albero-Sancho, Josep; López, Núria; García Gómez, Hermenegildo (Elsevier, 2023-09-15)

[EN] The rational design and in deep understanding of efficient, affordable and stable materials to promote the light-assisted production of fuels and commodity chemicals is very appealing for energy crisis and climate ...
Datos Spectrum

Rodríguez Burruezo, Adrián; Gurrea Ysasi, Gonzalo; Blanca Giménez, Vicente; Fita Fernández, Inmaculada Concepción; Fita Fernández, Ana María; Prohens Tomás, Jaime (Universitat Politècnica de València, 2021-02-24)

[ES] Los datos se utilizaron para diseñar curvas de temperatura y humedad
Degradation of Benzotriazole UV-stabilizers in the presence of organic photosensitizers and visible light: A time-resolved mechanistic study

Pavanello, Alice; Gomez-Mendoza, Miguel; de la Peña O'Shea, Víctor; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (Elsevier, 2022-04)

[EN] Benzotriazole UV-stabilizers (BUVSs) are commonly used in industry as solar filters, due to their strong UV light absorption. Because of their extended usage, environmental contamination of waters due to BUVSs constitutes ...
Design of communication systems based on broadband sources for fiber and free space optical links

Sekkiou, Imene (Universitat Politècnica de València, 2021-09-02)

[ES] Las comunicaciones ópticas inalámbricas (OWC) constituyen una tecnología muy prometedora para el desarrollo de futuras comunicaciones inalámbricas. De hecho, ha despertado un interés creciente entre los investigadores ...
Estudio de la actividad fotocatalítica de colorantes de nueva generación

Hernandis Altur, Vicente (Universitat Politècnica de València, 2021-09-02)

[ES] Actualmente, la fotocatálisis empleando luz visible cómo fuente de energía está considerada como una de las áreas de investigación más punteras dentro de la síntesis orgánica. Por tanto, el objetivo principal de este ...
Foundry Developments Toward Silicon Nitride Photonics From Visible to the Mid-Infrared

Muñoz, Pascual; van Dijk, Paulus W. L.; Geuzebroek, Douwe; Geiselmann, Michael; Domínguez, Carlos; Stassen, Andim; Doménech, José David; Zervas, Michael; Leinse, Arne; Roeloffzen, Chris G.H.; Gargallo, Bernardo; Baños, Rocio; Fernández, Juan; Mico-Cabanes, Gloria; Bru-Orgiles, Luis Alberto; Pastor Abellán, Daniel (Institute of Electrical and Electronics Engineers, 2019-09)

[EN] Photonic integration technologies have spread in the past decade by means of foundry models that mirror the electronic-integrated circuit industry developments of the past century. Several monolithic technologies ...
High-Efficiency Electrodeposition of Large Scale ZnO Nanorod Arrays for Thin Transparent Electrodes

Pullini, D.; Pruna, Alina Iuliana; Zanin, Stefano; Busquets Mataix, David Jerónimo (Electrochemical Society, 2012)

In the present work an effective technique to synthesize large-scale c-axis oriented ZnO nanorod (NR) arrays is presented. The manuscript reports a single-step cathodic electrodeposition, either in aqueous and organic ...
Highly Efficient Production of Heteroarene Phosphonates by Dichromatic Photoredox Catalysis

Herrera-Luna, Jorge Carlos; Díaz Díaz, David; Jiménez Molero, María Consuelo; Pérez-Ruiz, Raúl (American Chemical Society, 2021-10-07)

[EN] A new strategy to achieve efficient aerobic phosphorylation of five-membered heteraroenes with excellent yields using dichromatic photoredox catalysis in a gel-based nanoreactor is described here. The procedure involves ...
Improving TiO2 activity in photo-production of hydrogen from sugar industry wastewaters

Ilie, Mirela; Cojocaru, Bogdan; Parvulescu, Vasile I.; García Gómez, Hermenegildo (Elsevier, 2011)

[EN] A series of TiO2 photocatalysts dispersed on SiO2, modified with metals (Mn, Cr, V) or nonmetals (N or S) or covered with Au nanoparticles were prepared by incipient wetness impregnation, impregnation with urea or ...
Influence of the irradiation wavelength on the photocatalytic activity of Au-Pt nanoalloys supported on TiO2 for hydrogen generation from water

Montes Navajas, Pedro Manuel; Serra, Marco; García Gómez, Hermenegildo (Royal Society of Chemistry, 2013)

[EN] Seven samples of P25 titania containing Au Pt nanoalloys at constant total metal loading (0.25% wt),very similar particle size (1.5 nm) and different proportions of Pt (0.0, 22.8, 27.8, 35.0, 50.0, 69.0 and 100.0% wt) ...
Non-noble-metal NiS promoted charge separation and photocatalytic hydrogen evolution for ZnCdS nano-islands on spherical SiO2

Liu, Ke; Yang, Shan; Li, Wei; Wang, Yifan; Sun, Chuanzhi; Peng, Lu; García Gómez, Hermenegildo (American Chemical Society, 2023-04-01)

[EN] The efficiency of photocatalytic solar hydrogen evolution closely depends on the charge separation and the effective use of visible light. In this work, a highly efficient photocatalyst SiO2/ZnCdS/NiS was synthesized ...
Novel Mechanistic Insights on the Photoredox Degradation of CECs Using Organic Photocatalysts

Pavanello, Alice (Universitat Politècnica de València, 2022-12-30)

[ES] La demanda de agua y la contaminación del agua son dos problemas ligados no solo de los últimos años sino también para el futuro. Mucho se ha hecho en el pasado para eliminar los contaminantes emergentes (CEC) de los ...
Optimización de un proceso de degradación de agua procedente de la industria del cocido del corcho mediante un tratamiento combinado de ozono y luz UV-visible

Rebagliato Torregrosa, Sofía (Universitat Politècnica de València, 2015-11-25)

[EN] The project consists in designing and optimize a combined treatment of ozone with light to treat water with contaminants present in cork industries refractory to conventional treatments. The process is carried out at ...
Photocatalytic degradation of drugs in water mediated by acetylated riboflavin and visible light: A mechanistic study

Pavanello, Alice; Fabbri, Debora; Calza, Paola; Battiston, Debora; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (Elsevier, 2021-08)

[EN] There is a current concern, among the scientific community, on the pollutants classified as "persistent organic pollutants (POPs)". Pharmaceuticals and personal care products (PPCPs) belong to this family of contaminants; ...
Photoredox catalysis powered by triplet fusion upconversion: arylation of heteroarenes

Castellanos-Soriano, Jorge; Álvarez-Gutiérrez, Daniel; Jiménez Molero, María Consuelo; Pérez-Ruiz, Raúl (The Royal Society of Chemistry, 2022-07)

[EN] In this work, the feasibility of triplet fusion upconversion (TFU, also named triplet-triplet annihilation upconversion) technology for the functionalization (arylation) of furans and thiophenes has been successfully ...
Synergism of Au and Ru Nanoparticles in Low-Temperature Photoassisted CO2 Methanation

Mateo-Mateo, Diego; De Masi, Deborah; Albero-Sancho, Josep; Lacroix, Lisa-Marie; Fazzini, Pier-Francesco; Chaudret, Bruno; García Gómez, Hermenegildo (John Wiley & Sons, 2018)

[EN] Au and Ru nanoparticles have been deposited on Siralox® substrate by impregnation and chemical reduction, respectively (Au-Ru-S). The as-prepared material has demonstrated to be very active for the selective CO2 ...
The effect of temperature on the geopolymerization process of a metakaolin-based geopolymer

Muñiz-Villarreal, M. S.; Manzano Ramirez, Alejandro; Sampieri-Bulbarela, S.; Gasca-Tirado, J. Ramón; Reyes-Araiza, José Luis; Rubio-Ávalos, José Carlos; Pérez Bueno, J. J.; Apatiga, L. M.; Zaldivar-Cadena, A.; Amigó Borrás, Vicente (Elsevier, 2011-03-31)

This paper describes the effect of different curing temperatures on the geopolymerization process, physical, mechanical and optical properties of a metakaolin-based geopolymer activated by alkali. The influence of different ...