RT Journal Article
T1 M/TiO2 (M = Fe, Co, Ni, Cu, Zn) catalysts for photocatalytic hydrogen production under UV and visible light irradiation
A1 Díaz, Laura
A1 Rodríguez, V. D.
A1 González-Rodríguez, M.
A1 Rodríguez-Castellón, Enrique
A1 Algarra-González, Manuel
A1 Núñez, Pedro
A1 Moretti, E.
K1 Catalizadores
AB In order to improve the photocatalytic response of TiO2 to UV and visible light for hydrogen photoproduction, low cost M/TiO2 semiconductor catalysts were prepared by the impregnation method of five different first row transition metals (M = Fe, Co, Ni, Cu or Zn) on a commercial titania support. The maximum hydrogen production efficiency was achieved for the Cu/TiO2 photocatalyst, with ∼5000 and ∼220 μmol h−1 g−1 H2 production rates for UV and visible irradiation, respectively. Ni/TiO2 and Co/TiO2 also showed a significant photocatalytic activity when UV light was used. The best performing catalyst, Cu/TiO2, was characterized by TEM and XPS measurements. The data showed that Cu was highly dispersed over the TiO2 support and the copper species existed as both reduced Cu0/Cu+ and oxidized Cu2+ on TiO2. Besides, during the hydrogen production reaction, the reduced Cu was partially oxidized to Cu2+ by the transfer of photogenerated holes under UV or visible light irradiation. With UV and visible lamps, the H2 production rates were higher than those obtained with non-impregnated TiO2 by factors of 16 and 3, respectively. These results demonstrated that a Cu/TiO2 photocatalyst could be considered a promising low-cost alternative to the well-known Pt/TiO2 system for hydrogen production, making the Cu-based catalyst an ideal cost-effective candidate for this reaction
YR 2021
FD 2021-05-28
LK https://hdl.handle.net/10630/24010
UL https://hdl.handle.net/10630/24010
LA eng
NO Díaz, Laura ; Rodríguez, V. D. ; González-Rodríguez, M. ; Rodriguez-Castellon, Enrique ; Algarra, Manuel ; Núñez, Pedro ; Moretti, E. M/TiO2 (M = Fe, Co, Ni, Cu, Zn) catalysts for photocatalytic hydrogen production under UV and visible light irradiation.  	Inorg. Chem. Front., 2021,8, 3491-3500. https://doi.org/10.1039/D0QI01311K
NO The authors would like to thank Ministerio de Economía y Competitividad of Spain (CTQ2015-68951-C3-3-R and MAT2016-80933-R), Ministerio de Ciencia, Innovación y Universidades of Spain (Project RTI2018-099668-B-C22) and FEDER funds
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 26 ene 2026