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http://hdl.handle.net/2445/185576
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DC Field | Value | Language |
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dc.contributor.author | Wang, Yan | - |
dc.contributor.author | Homs Martí, Narcís | - |
dc.contributor.author | Ramírez de la Piscina, Pilar | - |
dc.date.accessioned | 2022-05-12T17:03:49Z | - |
dc.date.available | 2022-05-12T17:03:49Z | - |
dc.date.issued | 2021 | - |
dc.identifier.issn | 2238-7854 | - |
dc.identifier.uri | http://hdl.handle.net/2445/185576 | - |
dc.description.abstract | A series of complex organic-inorganic mesoporous materials were successfully synthesized by a microwave-assisted method that allowed the preparation of periodic mesoporous organosilicas (PMOs) with Ti (IV) forming part of the structure (Ti-PMOs). Materials were characterized using N2 adsorptionedesorption isotherms, powder X-ray diffraction (XRD), transmission and high resolution transmission electron microscopy (TEM and HRTEM), Raman, infrared, UVevisible diffuse reflectance (UVevis RDS), X-ray photoelectron (XPS), photoluminescence (PL) and electrochemical impedance (EIS) spectroscopy, and transient photocurrent measurements. Samples labeled Ti10-PMO, Ti20-PMO and Ti40- PMO (with Si/Ti molar ratio of about 10, 20 and 40), showed crystal-like characteristics and high specific surface area (742e829 m2 g-1). Ti-PMOs were studied in the photocatalytic H2 evolution from an aqueous ethanol solution under UVevisible irradiation. Ti-PMOs showed a better photocatalytic behavior than PMO and this is related with the presence of tetrahedral Ti(IV) in the PMOs network. Ti-PMOs displayed a lower barrier for the electron transfer and a more efficient charge separation than PMO. The highest H2 production was obtained with Ti20-PMO photocatalyst; after 4 h of irradiation, 2042 mmol H2 gcat 1 were obtained, which was about 20 times higher than that obtained with a reference commercial TiO2 (P25). | - |
dc.format.extent | 9 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1016/j.jmrt.2021.07.104 | - |
dc.relation.ispartof | Journal of Materials Research and Technology, 2021, vol. 14, p. 2115-2123 | - |
dc.relation.uri | https://doi.org/10.1016/j.jmrt.2021.07.104 | - |
dc.rights | cc-by (c) Wang, Yan et al., 2021 | - |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.source | Articles publicats en revistes (Química Inorgànica i Orgànica) | - |
dc.subject.classification | Hidrogen | - |
dc.subject.classification | Alcohol | - |
dc.subject.classification | Microscòpia electrònica de transmissió | - |
dc.subject.other | Hydrogen | - |
dc.subject.other | Alcohol | - |
dc.subject.other | Transmission electron microscopy | - |
dc.title | Ti-containing hybrid mesoporous organosilicas as photocatalysts for H2 production from ethanol | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 720229 | - |
dc.date.updated | 2022-05-12T17:03:49Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) |
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File | Description | Size | Format | |
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720229.pdf | 2.37 MB | Adobe PDF | View/Open |
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