Listar Departamento de Química Orgánica por autor "fddd6604-fb04-432a-b7b3-8f89a1d82bb0"
Mostrando ítems 1-15 de 15
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Bio-Templating: An Emerging Synthetic Technique for Catalysts. A Review
Herrera-Beurnio, M. Carmen; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; Martín-Gómez, Juan; Estévez, R.; Urbano, Francisco José; Marinas, Alberto (MDPI, 2021)In the last few years, researchers have focused their attention on the synthesis of new catalyst structures based on or inspired by nature. Biotemplating involves the transfer of biological structures to inorganic materials ... -
Biochars from olive stones as Carbonaceous support in Pt/TiO2-Carbon Photocatalysts and application in hydrogen production from aqueous glycerol photoreforming
Escamilla, Juan Carlos; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; López Tenllado, Francisco Javier; Estévez, R.; Marinas, Alberto; Urbano, Francisco José (MDPI, 2023)Several biochars were synthesized from olive stones and used as supports for TiO2, as an active semiconductor, and Pt as a co-catalyst (Pt/TiO2-PyCF and Pt/TiO2-AC). A third carbon-supported photocatalyst was prepared from ... -
Chemoselective hydrogenation of furfural to furfuryl alcohol on ZrO2 systems synthesized through the microemulsion method
Montes, V.; Miñambres, Juan F.; Khalilov, A.N.; Boutonnet, Magali; Marinas, José María; Urbano, Francisco José; Maharramov, A.M.; Marinas, Alberto (Elsevier, 2018)Different solids consisting in hydrous zirconia were synthesized by the water in oil microemulsion technique (ME series). For comparative purposes, diverse solids were also obtained by the conventional sol-gel method ... -
Controlled photodeposition of Pt onto TiO2-g-C3N4 systems for photocatalytic hydrogen production
Herrera-Beurnio, M. Carmen; López Tenllado, Francisco Javier; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; Estévez, R.; Castillo-Rodríguez, Miguel; Miguel, Gustavo de; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2022)Platinum (0.5 wt. %) was photodeposited on g-C3N4-TiO2 systems using UV or Vis light. Different absorption by semiconductors seemed to somehow influence resulting platinum particle size and distribution. Thus, lower platinum ... -
EPR and CV studies cast further light on the origin of the enhanced hydrogen production through glycerol photoreforming on CuO:TiO2 physical mixtures
Martín-Gómez, Juan; Hidalgo-Carrillo, J.; Montes, Vicente; Estévez, R.; Escamilla, Juan Carlos; Marinas, Alberto; Urbano, Francisco José (Elsevier, 2021)Different CuO nanoparticles were synthesized and tested in CuO:TiO2 physical mixtures for hydrogen production through glycerol photoreforming. CuO alone was inactive whereas its presence in CuO:TiO2 mixtures significantly ... -
Fourth generation synthesis of solketal by glycerol acetalization with acetone: A solar-light photocatalytic approach
Hidalgo-Carrillo, J.; Estévez, R.; López Tenllado, Francisco Javier; Bautista, Felipa M.; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2021)Background: Biomass is the only renewable alternative to fossil fuels to produce chemicals. In this sense, glycerol is an important biomass-derived platform chemical obtained as a by-product during biodiesel generation. ... -
Glycerol photoreforming for photocatalytic hydrogen production on binary and ternary Pt-g-C3N4-TiO2 systems: a comparative study
Herrera-Beurnio, M. Carmen; López Tenllado, Francisco Javier; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; Estévez, R.; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2024)Photocatalytic hydrogen production using two sacrificial agents (triethanolamine and glycerol) was conducted on several binary (Pt/TiO2 and Pt/g-C3N4) and ternary systems (Pt on a heterojunction between TiO2 and g-C3N4 ... -
Hydrogen photo-production from glycerol on platinum, gold and silver-modified TiO2-USY62 catalysts
López Tenllado, Francisco Javier; Estévez, R.; Hidalgo-Carrillo, J.; López Fernández, Silvia; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2022)In this work, photocatalysts consisting of TiO2 supported on zeolite (USY62) were synthesized by sol-gel method and, subsequently, a noble metal (Pt, Au, or Ag) was incorporated by impregnation or photodeposition. Zeolite-TiO2 ... -
Hydrogen photoproduction on TiO2-CuO artificial olive leaves
Martín-Gómez, Juan; Hidalgo-Carrillo, J.; Estévez, R.; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2021)Olive leaves were used as biotemplates to synthesize diverse TiO2-CuO solids. A successful replication of trichomes and internal channels was evidenced by SEM, whereas a good dispersion of Cu and Ti atoms was observed by ... -
Influence of sacrificial agent on Cu photodeposition over TiO2/MCH composites for photocatalytic hydrogen production
Martín-Gómez, Juan; Escamilla, Juan Carlos; Hidalgo-Carrillo, J.; López Tenllado, Francisco Javier; Estévez, R.; Herrera-Beurnio, M. Carmen; Castillo-Rodríguez, Miguel; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2022)Titanium (ca. 11 wt%) was dispersed on a carbonaceous mesoporous support and modified with copper (ca. 5 wt%) photodeposited using either glycerol or methanol as the sacrificial agent ((Cu-TiO2/MCH_(Gly) and Cu-TiO2/MCH_(Met) ... -
Photocatalytic production of hydrogen from binary mixtures of C-3 alcohols on Pt/TiO2: Influence of alcohol structure
López Tenllado, Francisco Javier; Hidalgo-Carrillo, J.; Montes Jiménez, Vicente; Sánchez-López, F.J.; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2019)The effect of alcohol structure on photocatalytic production of H2 from C-3 alcohols was studied on 0.5% Pt/TiO2. A C-2 alcohol (ethanol) was also included for comparative purposes. For individual reactions from 10% v/v ... -
Pt Preferential incorporation onto TiO2 IN TiO2-carbon composites for hydrogen production from glycerol photoreforming
Escamilla, Juan Carlos; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; López Tenllado, Francisco Javier; Estévez, R.; Marinas, Alberto; Urbano, Francisco José (Elsevier, 2022)Platinum was incorporated onto titania-mesoporous carbon composite and tested for glycerol photoreforming. The relative high surface area of the mesoporous carbon favored the good dispersion of anatase titania during sol-gel ... -
Simple and eco-friendly thermal regeneration of granular activated carbon from the odour control system of a full-scale WWTP: Study of the process in oxidizing atmosphere
Márquez, P.; Benítez de la Torre, A.; Hidalgo-Carrillo, J.; Urbano, Francisco José; Caballero, Álvaro; Siles, J.A.; Martín, M.A. (Elsevier, 2021)Adsorption by granular activated carbon (GAC) is an efficient, reliable, and well-established technique for treating malodours in wastewater treatment plants (WWTPs). However, when the lifespan of GAC is over, it becomes ... -
Synthesis of Fe-TiO2 and Cu-TiO2 Based Materials by Olive Leaves Biotemplating—Application to Hydrogen Production from Glycerol Photoreforming
Martín-Gómez, Juan; Reca-Expósito, Susana; López Tenllado, Francisco Javier; Hidalgo-Carrillo, J.; Marinas, Alberto; Urbano, Francisco José (MDPI, 2023)Hydrogen production is mainly based on the use of fossil fuels, but currently, many alternative routes are being developed, among which the photo-reforming of oxygenated organic compounds stands out. Recently, several ... -
The NtrYX Two-Component System of Paracoccus denitrificans Is Required for the Maintenance of Cellular Iron Homeostasis and for a Complete Denitrification under Iron-Limited Conditions
Olaya-Abril, Alfonso; Luque-Almagro, Víctor Manuel; Hidalgo-Carrillo, J.; Chicano-Gálvez, Eduardo; Urbano, Francisco José; Moreno-Vivián, Conrado; Richardson, David J.; Roldán, María Dolores (MDPI, 2022)Denitrification consists of the sequential reduction of nitrate to nitrite, nitric oxide, nitrous oxide, and dinitrogen. Nitrous oxide escapes to the atmosphere, depending on copper availability and other environmental ...