Photodecomposition of bisphenol A on nanometer-sized TiO2 thin film and the associated biological toxicity to zebrafish (Danio rerio) during and after photocatalysis

Water Research
Min-Kyeong Yeo, Misook Kang

Abstract

We investigated the relationship between the TiO2 photocatalytic decomposition of bisphenol A and biological toxicity to zebrafish (Danio rerio). TiO2 particles, which prepared using a solvothermal method, were applied to produce a nanometer-sized TiO2 thin film. An alcoholic solution containing the TiO2 particles and an inorganic binder was directly coated on the UV-lamp substrate. It was equipped in a photoreactor that was manufactured in our laboratory. The attachment of the thin TiO2 film to the UV-lamp substrate resulted in a stable and transparent coating. The TiO2 particles on the thin film were approximately 20-30 nm in size, and the resulting film thickness was approximately 200 nm after a single coat. The bisphenol A, which was eluted from epoxy resin in a drinking water tank, was completely degraded by the TiO2 photocatalysis. We initially detected approximately 7.8 ng/ml of bisphenol A in the epoxy-resin tank, but its concentration was undetectable after a 48-h photocatalytic reaction over TiO2. We observed a decreased survival rate in zebrafish that were reared in water exposed to the leaching process of the epoxy resin. After the photocatalysis, however, no toxic effects on the hatching rates or morphogenesis of t...Continue Reading

Citations

Mar 7, 2014·Environmental Science and Pollution Research International·Sofia Raquel MesquitaBenjamin Piña
Aug 1, 2014·Journal of Hazardous Materials·Michela GuarientiMarco Presta
Dec 27, 2011·Neurotoxicology·William K BoyesRobert A Yokel
Nov 26, 2011·Toxicology and Applied Pharmacology·Kristen SandersWilliam K Boyes
Nov 3, 2007·Water Research·Marcio InoueMikio Sakakibara
May 8, 2015·Environmental Science and Pollution Research International·Christoph HafnerHenner Hollert
Feb 26, 2009·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Virender K SharmaDmitriy Golovko
Feb 26, 2010·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Takamitsu OtakeTakashi Yarita

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