RT journal article
T1 One-pot synthesis of Au/N-TiO2 photocatalysts for environmental applications: Enhancement of dyes and NOx photodegradation
A1 Luna Aguilera, Manuel Jesús
A1 Gatica Casas, José Manuel
A1 Vidal Muñoz, Hilario
A1 Mosquera Díaz, María Jesús
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Química Física
K1 Au/N-TiO2
K1 Gold
K1 Nitrogen doping
K1 NOx depolluting
K1 Photocatalyst
K1 TiO2
AB Au/N-TiO2 photocatalysts with enhanced photoactivity thanks to nitrogen doping and gold nanoparticles (AuNPs) controlled deposition onto titania have been obtained bymeans ofa simple and innovative one-pot synthesis promoting synergetic activity between these two approaches. The activity of the materials under study was evaluated by methylene blue and NOx degradation tests as models ofenvironmental remediation processes for water purification and air depollution. The use of a deposition-precipitation method employing urea allows obtaining Au/N-TiO2 photocatalysts containing 0.3 at.% ofnitrogen and 0.5 wt% ofgold. The results obtained confirmed that the presence of both, nitrogen and AuNPs, enhanced the TiO2 photoactivity increasing the photodegradation of the dye and NOx in a factor of 4.5 and 1.7, respectively. In particular, the AuNPs enabled the photoactivity under visible light and improved substantially the selectivity of the NO degradation process. The photocatalysts here proposed maintain their properties as they are integrated into a silica matrix producing a product with potential use for the coating of different substrates, such as building materials for application in urban areas and fabrics or foams for the photocatalytic filters production.
PB Elsevier
SN 0032-5910
YR 2019
FD 2019-07
LK http://hdl.handle.net/10498/38628
UL http://hdl.handle.net/10498/38628
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 09-nov-2026