Functionalized and grafted TiO 2 , CeO 2 , and SiO 2 nanoparticles-ecotoxicity on Daphnia magna and relevance of ecofriendly polymeric networks.

Authors :: Hurel C
Bignon C
Said-Mohamed C
Amigoni S
Devers T
Guittard F
Source :: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2018 Jul; Vol. 25 (21), pp. 21216-21223. Date of Electronic Publication: 2018 May 18.
Publication Year :: 2018
Abstract: Effects of functionalization and grafting of TiO <subscript>2</subscript> , CeO <subscript>2</subscript> , and SiO <subscript>2</subscript> nanoparticles (NPs) were investigated, and toxicity of pristine, functionalized, and grafted NP towards Daphnia magna was measured. Surface functionalization of NP with amine groups decreased hydrophobicity of NP. When NPs were hydrophilic, they were less toxic than hydrophobic NP towards D. magna. Grafting agents influenced toxicity: no toxicity of NP was observed when bio-based and hydrogenated synthetic polymers were used, whereas perfluorinated polymers induced a higher toxicity.

Subjects :: Animals
Biological Assay
Cerium chemistry
Daphnia growth & development
Nanoparticles chemistry
Polymers chemical synthesis
Silicon Dioxide chemistry
Titanium chemistry
Water Pollutants, Chemical chemistry
Cerium toxicity
Daphnia drug effects
Nanoparticles toxicity
Polymers toxicity
Silicon Dioxide toxicity
Titanium toxicity

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