Ecotoxicity of Titanium Dioxide Nanoparticles

Dear Colleagues,

For more than a decade, nanotechnologies have attracted the interest of industrials and scientists throughout the world. The number of commercial goods publicly reported to contain nanomaterials has increased from 54 in 2005 to 3639 in 2020 in all fields of everyday life. Among those, TiO₂ nanoparticles are one of the most used, appearing in about 25% of products. TiO₂ has been classified by the International Agency for Research on Cancer and the European Commission as potentially carcinogenic (by inhalation). The expansion of TiO₂ nanoparticle usage inevitably leads to an increased dissemination in both the aquatic and terrestrial ecosystems. If a lot of knowledge has already been gathered about TiO₂ nanoparticle fate in simplified environments, a lot of questions still remain open: their fate in more complex environments (with the use of micro and mesocosms), the transfer in the trophic chains, the impact of their crystalline phase, the interactions with other environmental contaminants, and the appropriate techniques to detect and characterize them in the environment, among others.

This Special Issue of Nanomaterials is thus dedicated to showcasing the last advances made toward answering the question of TiO₂ nanoparticle ecotoxicity.

Dr. Camille Larue
Guest Editor

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