期刊
COATINGS
卷 7, 期 1, 页码 -出版社
MDPI AG
DOI: 10.3390/coatings7010008
关键词
self-cleaning; life cycle assessment; titanium dioxide nanoparticles; ecodesign; scale-up; float glass
资金
- ARACNE e Laboratorio Integrato Sviluppo Tecnologie Avanzate Materiali Innovativi per Costruzioni Ecosostenibili through the Italian regional program, Dai distretti produttivi ai distretti tecnologici
In recent years, superhydrophilic and photocatalytic self-cleaning nanocoatings have been widely used in the easy-to-clean surfaces field. In the building sector, self-cleaning glass was one of the first nanocoating applications. These products are based on the photocatalytic property of a thin layer of titanium dioxide (TiO2) nanoparticles deposited on the surface of any kind of common glass. When exposed to UV radiation, TiO2 nanoparticles react with the oxygen and water molecules adsorbed on their surface to produce radicals leading to oxidative species. These species are able to reduce or even eliminate airborne pollutants and organic substances deposited on the material's surface. To date, TiO2 nanoparticles' benefits have been substantiated; however, their ecological and human health risks are still under analysis. The present work studies the ecodesign of the industrial scale-up of TiO2 nanoparticles self-cleaning coated float glass production performed by the life cycle assessment (LCA) methodology and applies new human toxicity indicators to the impact assessment stage. Production, particularly the TiO2 nanoparticle application, is the life cycle phase most contributing to the total damage. According to the ecodesign approach, the production choices carried out have exacerbated environmental burdens.
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