Nanoparticles and the Building
Industry-A Short Review
Volume 1 - Issue 1
Christine Gaylarde1* and Benjamín Otto Ortega-Morales2
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- 1Department of Microbiology and Plant Biology, Oklahoma University, USA
- 2Department of Environmental Microbiology and Biotechnology DEMAB, Universidad Autónoma de Campeche, Mexico
*Corresponding author:
Christine Gaylarde, Department of Microbiology and Plant Biology, Oklahoma University, USA
Received: April 27, 2018; Published: May 16, 2018
DOI: 10.32474/ANOAJ.2018.01.000104
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Abstract
Nanoparticles have been used to protect the exteriors of built
structures for many years, with nTiO2 having a major role in the
production of self-cleaning surfaces. Photo catalysis leads to the
liberation of substances such as Reactive Oxygen Species, which can
effectively remove organic contaminants, including the disfiguring
microbial growths, from the surfaces. Light exposure is not essential
for this activity, however some engineered nanoparticles have been
shown to have inherent antimicrobial properties. Other nanometals
have been employed, sometimes together with TiO2, or with
materials such as stone consolidants. A brief review of some recent
research in the area, including ecological problems that can arise
when the particles are released into the environment, is presented.
It is essential that standard testing methods, both for nanoparticle
efficacy and for ecotoxicological effects, be developed. Nanoparticles
(NPs) of metal oxides have been used to protect building surfaces
against microbial bio film formation for many years. NPs of TiO2
(n-TiO2), especially, have been used to produce surfaces that are
self-cleaning on exposure to light, when photo catalytic activity
destroys organic materials, including microorganisms.
Keywords: Photo catalysis; Reactive Oxygen Species; Organic Contaminants; Nanoparticles; Antimicrobial Agent; Micro Particles;
Water Repellants; Extracellular Polymeric Substances; Stone Degradation; Crumbling
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