Mariem Zouari (Author), Laetitia Sarah Jennifer Marrot (Author), David Brian DeVallance (Author)

Abstract

Growing concerns about indoor air pollution heighten the need to develop depolluting materials to achieve a healthy built environment. This study developed functional coatings for wooden surfaces using 20 wt% photocatalytic biocarbon particles doped with manganese oxide (BC–MnO2) and two different coating materials (linseed oil and waterborne acrylic). The samples' surface hydrophobicity and color properties were tested before and after accelerated aging. The depolluting potential of the samples was evaluated by formaldehyde removal efficiency test in indoor conditions. Results showed that adding BC-MnO2 particles increased the hydrophobicity regardless of the coating material's type. After accelerated aging, the hydrophobicity of all samples increased, which was attributed to the curing of the oil and acrylic polymers and the increase in surface roughness eventually caused by surface damage. The color change (ΔE) was more intense in the case of uncoated wood and samples without BC-MnO2. However, the BC-MnO2-containing coatings were effective in color preservation (ΔE < 2), which was attributed to the anti-UV property of biocarbon. The BC-MnO2-containing coatings exhibited a promising formaldehyde removal efficiency of up to 24 % and 46 % for oil and acrylic samples, respectively. The combination of BC-MnO2 and acrylic material was more favourable to attracting the formaldehyde molecules, likely due to the similar polarity. The developed functional coatings exhibited an acceptable ability for wood protection and formaldehyde remediation and can be potentially used to enhance indoor air quality.

Keywords

photocatalytic wood coating;hydrophobic surface;UV protection;volatile organic compound;formaldehyde removal;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: ZAG - Slovenian National Building and Civil Engineering Institute
Publisher: Elsevier
UDC: 630*3
COBISS: 200191747 Link will open in a new window
ISSN: 1873-684X
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Downloads: 21
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Other data

Secondary language: Slovenian
Secondary keywords: fotokatalitični premazi za les;hidrofobna površina;UV zaščita;hlapne organske spojine;odstranjevanje formaldehida;
Pages: str. 1-9
Volume: ǂVol. ǂ261
Issue: [atricle no.] 1111716
Chronology: 2024
DOI: 10.1016/j.buildenv.2024.111716
ID: 25808396