RT journal article
T1 Au-TiO2/SiO2 photocatalysts for building materials: Self-cleaning and de- polluting performance
A1 Luna Aguilera, Manuel Jesús
A1 Mosquera Díaz, María Jesús
A1 Vidal Muñoz, Hilario
A1 Gatica Casas, José Manuel
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Química Física
K1 Au-TiO2/SiO2 composite
K1 Buildings materials
K1 De-polluting
K1 Long-lasting coatings
K1 NOx
K1 Photocatalyst
K1 Self-cleaning
K1 Soot
AB TiO2 is a photocatalytic material that has proven to have the ability to produce self-cleaning and de-polluting building materials, which can be a valuable alternative to mitigate the pollution consequences. However, the TiO2 performance is limited in outdoor conditions due to its exclusive UV absorption. In this work, Au-TiO2 photocatalysts were integrated into a silica sol-gel synthesis in order to produce long-lasting coatings with self-cleaning and de-polluting properties on building materials. This simple synthesis allows the in situ application on buildings. The enhancement of TiO2 photoactivity by AuNPs was clearly demonstrated. The self-cleaning and de-polluting properties were evaluated using soot and NO, respectively, showing that AuNPs promote the TiO2 performance. In addition, the role of AuNPs size and their loading on TiO2 performance were investigated. It was demonstrated that the smallest AuNPs size (13 nm) and the intermedium gold content (0.5% w/w Au/TiO2) show the highest photoactivity.
PB Elsevier
SN 0360-1323
YR 2019
FD 2019
LK http://hdl.handle.net/10498/38629
UL http://hdl.handle.net/10498/38629
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026