| Literature DB >> 24518963 |
Melanie Auffan1, Armand Masion2, Jerome Labille2, Marie-Ange Diot2, Wei Liu2, Luca Olivi3, Olivier Proux4, Fabio Ziarelli5, Perrine Chaurand2, Christophe Geantet6, Jean-Yves Bottero2, Jerome Rose2.
Abstract
A multi-scale methodology was used to characterize the long-term behavior and chemical stability of a CeO2-based nanocomposite used as UV filter in wood stains. ATR-FTIR and (13)C NMR demonstrated that the citrate coated chelates with Ce(IV) through its central carboxyl- and its α-hydroxyl- groups at the surface of the unaged nanocomposite. After 42 days under artificial daylight, the citrate completely disappeared and small amount of degradation products remained attached to the surface even after 112 days. Moreover, the release/desorption of the citrate layer led to a surface reorganization of the nano-sized CeO2 core observed by XANES (Ce L3-edge). Such a surface and structural transformation of the commercialized nanocomposite could have implications in term of fate, transport, and potential impacts towards the environment.Entities:
Keywords: Degradation; Environment; Exposure; Nanomaterials
Mesh：
Substances：
Year: 2014 PMID： 24518963 DOI： 10.1016/j.envpol.2014.01.016
Source DB: PubMed Journal: Environ Pollut ISSN： 0269-7491 Impact factor: 8.071