Influence of TiO2 Nanoparticles on the Resistance of Cementitious Composite Materials to the Action of Bacteria

The formation of biofilms on cementitious building surfaces can cause visible discoloration and premature deterioration, and it can also represent a potential health threat to building occupants. The use of embedded biofilm-resistant photoactivated TiO2 nanoparticles at low concentrations in the cem...

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Bibliographic Details
Published inMaterials Vol. 14; no. 5; p. 1074
Main Authors Hegyi, Andreea, Lăzărescu, Adrian-Victor, Szilagyi, Henriette, Grebenişan, Elvira, Goia, Jana, Mircea, Andreea
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 25.02.2021
MDPI
Subjects
Adsorption
Bacteria
bactericidal effect
Biofilms
Cement hydration
cementitious composites
Composite materials
Concrete
Cytotoxicity
Discoloration
Disinfection & disinfectants
E coli
Light
Low concentrations
Maintenance costs
Microorganisms
Nanoparticles
Outdoor air quality
Photocatalysis
TiO2 nanoparticles
Titanium dioxide
Viruses
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Summary:The formation of biofilms on cementitious building surfaces can cause visible discoloration and premature deterioration, and it can also represent a potential health threat to building occupants. The use of embedded biofilm-resistant photoactivated TiO2 nanoparticles at low concentrations in the cementitious composite matrix is an effective method to increase material durability and reduce maintenance costs. Zone of inhibition studies of TiO2-infused cementitious samples showed efficacy toward both Gram-negative and Gram-positive bacteria.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14051074