@misc{10481/107372,
year = {2026},
month = {2},
url = {https://hdl.handle.net/10481/107372},
abstract = {A new series of TiO2-Ag/BEA composites was specifically designed for use in filter/photo-reactors intercalated in
air recirculation circuits in storage facilities for climacteric fruits. The sol-gel procedure for TiO2 deposition was
combined with ionic exchange (IE) or incipient wet impregnation (IWI) techniques for Ag doping, with the
proportions of both fractions also varying. The prepared materials were thoroughly characterized in terms of
their porous texture, chemical composition, crystalline structure, and Ag dispersion, among other properties.
Dynamic ethylene adsorption was recorded in the dark. After saturation, ethylene photooxidation was analyzed
under UV or UVA-visible light, with varying contact times, flow rates, and concentrations, and with or without
humidity present. The maximum ethylene adsorption capacity (361 μmol g− 1
) corresponds to the sample with
the highest Ag content (5 wt%), added by IE, while the best photocatalytic performance is obtained for samples
doped by IWI. The performance of the samples was found to be correlated with their physicochemical properties
and was specifically determined by the nature and dispersion of the silver species in the composites. Total
ethylene photooxidation is achieved even under UV–Vis radiation; the reaction develops selectively to CO2 in all
cases, despite the strong negative effect of humidity on the formation of more active HO• radicals. The high
adsorption capacity and effective photooxidation of ethylene enable control of this maturation hormone below
the established limits.},
organization = {FCT (Fundação para a Ciência e a Tecnologia) – (Nano4fresh-PRIMA/0015/2019, UIDP/00100/2020 (CQE), UID/00097/2030 (CEGIST), LA/P/0056/2020 (IMS), PhD grant 2022.12593.BD)},
organization = {MCIN/AEI/10.13039/501100011033 – European Union Next Generation EU/PRTR (PCI2020-112045, PID2021-126579OB-C31, Ramon y Cajal research contract RYC-2019-026634-I)},
organization = {MCIN/AEI/10.13039/501100011033 – ERDF “A way of making Europe” (PID2021-126579OB-C31)},
organization = {Consejería de Universidad, Investigación e Innovación – Junta de Andalucía (P21_00208)},
organization = {Universidad de Granada / CBUA (Open access)},
publisher = {Elsevier},
keywords = {Photocatalysis},
keywords = {Adsorption},
keywords = {Ethylene},
title = {New TiO₂-Ag/BEA composites with dual Ag-functionalization for specific adsorption and catalytic sites. Synergism between phases in the ethylene removal for climateric fruit conservation},
doi = {10.1016/j.seppur.2025.135302},
author = {Ferreira, Ricardo and Regadera Macías, Ana María and Morales Torres, Sergio and Pastrana Martínez, Luisa María and Lourenço, João Paulo and Silva, João Miguel and João, Isabel M. and Ribeiro, M. Filipa and Fernandes, Auguste and Maldonado Hódar, Francisco José},
}