Please wait.'

Page is loading'


Home  > Raw materials & technologies  > Technologies  > Nanotechnology  > Photocatalytic and antimicrobial effects o...

Thursday, 04 June 2020
pdf
Raw materials & technologies, Technologies, Nanotechnology

Photocatalytic and antimicrobial effects of interior paints

Wednesday, 25 November 2009

The nano-form of ZnO was found to be the best photocatalytic agent and also the best and broadest spectrum antimicrobial agent for the investigated interior paints.

An agar plate method was used for the evaluation of antimicrobial effect of the coatings Source: erbphoto - Fotolia.com

An agar plate method was used for the evaluation of antimicrobial effect of the coatings Source: erbphoto - Fotolia.com

L. Hochmannova and J. Vytrasova from Czech Republic investigated interior paints. They formulated them on the basis of aqueous acrylic dispersion, rutile titanium dioxide, extenders and special additives as photocatalytic nano zinc oxide and different types of photocatalytic anatase titanium dioxide. Organic dye Orange II was used as an indicator for the reactivity of photocatalytic surfaces. The absorbance change of Orange II solution was measured by a photometer. An agar plate method was used for the evaluation of antimicrobial effect of the coatings. The effectiveness of coatings was demonstrated using the following bacteria relevant to hygiene: Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, fungi Aspergillus niger and Penicillium chrysogenum. The nano-form of ZnO was found to be the best photocatalytic agent and also the best and broadest spectrum antimicrobial agent for these interior paints. Statistically significant differences between the control coatings and the coatings with nano-form of ZnO were found using Rank-sum test. More information will be available in "Progress in Organic Coatings" volume 67,issue 1 in Januar 2010, pages 1-5. more about the research institute SYNPO http://www.synpo.cz/?lang=en

top of page
Comments (0)
Add Comment

Post comment

You are not logged in

register