Classification of Indoor Environment 2018 and Updated Criteria of RTS Environmental Classification

Sariola, Laura; Säteri, Jorma; Rintala, Timo

doi:10.1088/1755-1315/297/1/012045

Cited by 2 publications

(1 citation statement)

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“…Selection of indoor spaces and microenvironment assessment. Major eligibility criteria for spaces selection in our study referred to previously published reports in order to assess a quite constant microclimate in our indoor environments [21][22][23][24][25][26][27][28][29][30][31][32][33]35 , so to significantly reduce the impact of outliers, bias and confounders in our collected data. To extend our investigation to the widest typology of indoor spaces undergoing our photocatalyst technology, we selected: (a) four different school classrooms (data collection from May 25th 2021 to June 7th 2021); (b) a farm showroom (data collection from April 14th 2021 to June 14th 2021); (c) two different housing farm boxes (job containers) (data collection from April 29th 2021 to May 13th 2021); (d) a laundering depot in a laundry (data collection from June 11th 2021 to June 16th 2021); (e) a phone shop (data collection from September 16th 2021 to November 12th 2021).…”

Section: Methodsmentioning

confidence: 99%

TiO2–Ag–NP adhesive photocatalytic films able to disinfect living indoor spaces with a straightforward approach

Chirumbolo

Gibellini

Berto

et al. 2023

Sci Rep

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TiO2–Ag doped nanoparticulate (TiO2–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. TiO2–Ag doped nanoparticulate (TiO2–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/m3). TiO2–Ag–NP photocatalyst reduced RLU and CFU/m3 by rates higher than 70% leading to RLU ≤ 20 and microbial presence ≤ 35 CFU/m3. The described TiO2–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 m2. The correlation between RLU and CFU/m3 was positive (r = 0.5545, p < 0.05), assessing that the microbial reduction of indoor areas by the TiO2–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 TiO2–Ag–NP adhesive film on the wall.

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