Nanoparticle release from self-cleaning cement
New figures on how much titanium dioxide nanomaterial (TiO2-NM) could be released into the environment from photocatalytic cement - a new type of self-cleaning cement - have been presented in a recent study.
Based on experimental test results, researchers estimate that between 0.015% and 0.033% of photocatalytic cement’s TiO2-NM content could potentially escape over several years of cement use, depending on the level of cement porosity. The study could help inform environmental risk assessment of TiO2-NM, as well as safer design of nano-products (i.e. commercialised products incorporating nanomaterials).
Further details of the study have been published by the European Commission.
Reference: Bossa, N., et al. (2017). Environmental exposure to TiO2 nanomaterials incorporated in building material. Environmental Pollution, 220: 1160–1170. DOI:10.1016/j.envpol.2016.11.019.
Source: European Commission