Cotton Terry Textiles with Photo- and Bio-Activity in a Model Study and Real Conditions.
Beata GutarowskaJustyna SzulcEdyta Matyjas-ZgondekPiotr KulpińskiKatarzyna Pielech-PrzybylskaAnna RygałaAnita JachowiczEugeniusz RutkowskiPublished in: Materials (Basel, Switzerland) (2020)
The aim of the study was to assess the photocatalytic (decompose staining particles, K/S values, the color differences, CIE L*a*b* color) and antimicrobial properties of textiles modified with TiO2 and ZnO nanoparticles (NPs) confirmed by X-ray diffraction, dynamic light scattering, SEM-EDX) in visible light conditions. The antimicrobial effectiveness of modified textiles under model conditions has been reported against 5 microorganisms: Staphylococcus aureus, Escherichia coli, Bacillus subtilis, Candida albicans, Aspergillus niger (AATCC Test Method 100-2004). In real conditions in bathrooms, significant biostatic activity was shown on the surface of the modified towels. The number of microorganisms decreased by 1-5 log to the level of 0-5 CFU/cm2 in the case of bacteria: Enterobacteriaceae, Enterococcus, the coli group and E. coli, Pseudomonas. Statistically significant reduction of the total number of bacteria and fungi (by 1 log), and the concentration of gases (NO2, CO2, CO) in the air of bathrooms was determined. The removal or reduction of volatile organic compounds (VOCs) concentration (SPME-GC-MS analysis) in the air above the modified towels has also been determined. It was found that the lighting type (natural, artificial), time (1.5 and 7 h/day), air humidity (RH = 36-67%) and light intensity (81-167 lux) are important for the efficiency of photocatalysis. Textile materials modified with TiO2 and ZnO NPs can be used as self-cleaning towels. They can also help purify air from microorganisms, VOCs and undesirable gases.
Keyphrases
- visible light
- staphylococcus aureus
- escherichia coli
- biofilm formation
- candida albicans
- bacillus subtilis
- pseudomonas aeruginosa
- randomized controlled trial
- quantum dots
- high resolution
- systematic review
- klebsiella pneumoniae
- room temperature
- high intensity
- reduced graphene oxide
- methicillin resistant staphylococcus aureus
- mass spectrometry
- electron microscopy
- flow cytometry