Experimental Analysis of Behavior in TiO₂ Nanoparticle Suspension

Abstract:

The deposition of TiO₂ nanoparticles in the environment has been systematically investigated; this is due to the use of nanosized titanium dioxide (TiO₂) in a variety of consumer products such as sunscreens, cosmetics, paints and surface coatings as well as the environmental decontamination of air, soil and water. It is the generalized use which increases the concern that the nanoparticle TiO₂ could pose a risk to ecosystems and humans. In this context, this paper aims to characterize different suspensions of nanoparticles of titanium dioxide. Although these particles are already incorporated in a wide range of products, the evaluation of their behavior and its effects on the environment and health start to grow now. So this paper aims to conduct a study of the behavior of TiO₂ nanoparticles in aqueous suspensions. The study encompasses TiO₂ solutions with ultra pure water with and without added NaCl, landfill leachate and tap water. The results obtained showed that the addition of NaCl in the solution increases the size of the TiO₂ nanoparticles, showing that the sodium chloride functions as a binding agent when in contact with nanoparticles of titanium dioxide.

• Periodical: Materials Science Forum (Volume 802)
• Pages: 163-167
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.802.163
• Online since: December 2014
• Authors: Maryana Antonia Braga Batalha Souza, Adriana de Souza Forster, Mabelle Biancardi Oliveira, José Adilson de Castro
• Keywords: Aqueous Suspensions, Environmental Contamination, Nanoparticle TiO₂

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