info:eu-repo/semantics/article
CeO 2 nanoparticles for the protection of photosynthetic organisms immobilized in silica gels
Fecha
2011-03Registro en:
Sicard, Clémence; Perullini, Ana Mercedes; Spedalieri, Ana Cecilia; Coradin, Thibaud; Brayner, Roberta; et al.; CeO 2 nanoparticles for the protection of photosynthetic organisms immobilized in silica gels; American Chemical Society; Chemistry Of Materials; 23; 6; 3-2011; 1374-1378
0897-4756
CONICET Digital
CONICET
Autor
Sicard, Clémence
Perullini, Ana Mercedes
Spedalieri, Ana Cecilia
Coradin, Thibaud
Brayner, Roberta
Livage, Jacques
Jobbagy, Matias
Aldabe, Sara Alfonsina
Resumen
Synthetic cytocompatible CeO 2 nanoparticles embedded in transparent silica hydrogels are useful for creating inorganic supports favoring the long-term entrapment of living Chlorella vulgaris cells. The key protective role of nanoparticles is twofold: (1) They efficiently absorb harmful UV radiation without scattering the useful visible one. (2) They limit oxidative stress damage, such as that induced by H 2 O 2 , thanks to the surface redox Ce 3+ -Ce 4+ reactivity of nanoparticles. © 2011 American Chemical Society.