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TiO2–Ag–NP adhesive photocatalytic films able to disinfect living indoor spaces with a straightforward approach.
- Source :
- Scientific Reports; 3/14/2023, Vol. 13 Issue 1, p1-14, 14p
- Publication Year :
- 2023
-
Abstract
- TiO<subscript>2</subscript>–Ag doped nanoparticulate (TiO<subscript>2</subscript>–Ag–NP) adhesive photocatalytic films were used to assess the ability in dropping down the burden of indoor microbial particles. The application of an easy-to use photocatalytic adhesive film to cleanse indoor living spaces from microbial pollution, represents a novelty in the field of photocatalytic devices. Reduction was attained by photocatalysis in selected spaces, usually with overcrowding (≥ 3 individuals) in the common working daily hours, and upon indoor microclimate monitoring. TiO<subscript>2</subscript>–Ag doped nanoparticulate (TiO<subscript>2</subscript>–Ag–NP) adhesive photocatalytic films were applied within five types of living spaces, including schools and job places. The microbial pollution was assessed at time 0 (far from routine clean, ≥ 9 h) and throughout 2–4 weeks following the photocatalyst application by relative light unit (RLU) luminometry and microbial indirect assessment (colony forming units per cubic meter, CFU/m<superscript>3</superscript>). TiO<subscript>2</subscript>–Ag–NP photocatalyst reduced RLU and CFU/m<superscript>3</superscript> by rates higher than 70% leading to RLU ≤ 20 and microbial presence ≤ 35 CFU/m<superscript>3</superscript>. The described TiO<subscript>2</subscript>–Ag–NP is able to reduce microbial pollution to the lowest RLU threshold (≤ 20) within 60 min in open daylight in a standardized test room of 100 m<superscript>2</superscript>. The correlation between RLU and CFU/m<superscript>3</superscript> was positive (r = 0.5545, p < 0.05), assessing that the microbial reduction of indoor areas by the TiO<subscript>2</subscript>–Ag–NP adhesive film was real. Titania photocatalysts represent promising tools to ensure air cleaning and sanitization in living indoor microclimates with a low cost, feasible and straightforward approach. This approach represents an easy to handle, cost effective, feasible and efficacious approach to reduce microbial pollution in indoor spaces, by simply attaching a TiO<subscript>2</subscript>–Ag–NP adhesive film on the wall. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 13
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Scientific Reports
- Publication Type :
- Academic Journal
- Accession number :
- 162435268
- Full Text :
- https://doi.org/10.1038/s41598-023-31464-4