Comparative life cycle assessment of the fabrication of visible-light-driven photocatalytic TiO2-Carbon dots nanocomposites for wastewater treatment

• Tipo: Artigo em Revista Científica Internacional
• Data: 2025

Autores

Sendao, RMS (Autor) Outra; Joaquim C G E Esteves da Silva (Autor) FCUP; da Silva, LP (Autor) Outra

Revista

Título: NanoImpact

Vol. 38

ISSN: 2452-0748

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-018-JPT

DOI: 10.1016/j.impact.2025.100556

Abstract (EN): TiO2 nanoparticles are promising photocatalysts due to their oxidizing strength and inertness. However, their inability to efficiently absorb visible light limits industrial applications that could use sunlight. The addition of carbon dots to TiO2 has been recently shown to have the potential to address this issue by enhancing the visible light-driven photocatalytic efficiency of the resulting nanocomposites. However, concrete data on their sustainable development and fabrication is lacking. Herein, we performed a life cycle assessment (LCA) study to understand the environmental impacts of different TiO2-carbon dots nanocomposites with enhanced visible light-driven photocatalytic activity. It was found that the nanocomposites with the highest photocatalytic activity were the ones whose synthesis was associated with lower environmental impacts. Furthermore, the carbon dots generally have little to moderate contributions to most impact categories, except for marine eutrophication. Finally, the most critical parameter was found to be the source of TiO2 for the nanocomposites.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10