Tuning the visible-light-driven photocatalytic properties of multi-decorated TiO2 by noble metals towards both propionic acid and NOx degradation

Autor: Niloofar Haghshenas, Ermelinda Falletta, Giuseppina Cerrato, Alessia Giordana, Claudia L. Bianchi
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Catalysis Communications, Vol 181, Iss , Pp 106728- (2023)
Druh dokumentu: article
ISSN: 1873-3905
DOI: 10.1016/j.catcom.2023.106728
Popis: Multiple noble metals-modified micrometric TiO2-based photocatalysts were prepared by a cheap and sustainable approach based on the use of metal-enriched wastewaters (Ag, Au, Pt) and used for the photodegradation of propionic acid (PA) and NOx under LED. Properly tuning the metal decoration step, the material's photoactivity was optimized. 0.1%Pt @Ag/TiO2 led to 60% PA removal, whereas the strong PA adsorption on the 0.1%Au @Ag/TiO2 surface caused a partial deactivation. In contrast, 0.1%Au @Ag/TiO2 showed the highest photoactivity in the NOx decomposition (90%) due to the high tolerance of Au to HNO3 produced on the catalyst surface.
Databáze: Directory of Open Access Journals
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