CeO 2 nanoparticles for the protection of photosynthetic organisms immobilized in silica gels

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...

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Detalles Bibliográficos
Autores principales: Sicard, C., Perullini, M., Spedalieri, C., Coradin, T., Brayner, R., Livage, J., Jobbágy, M., Bilmes, S.A.
Formato: JOUR
Materias:
bio-materials
bio-mimetic materials
nanomaterials
nanoparticles
sol-gel chemistry
sol-gel processing
Chlorella vulgaris
Inorganic supports
Photosynthetic organisms
UV radiation
Cerium
Nanostructured materials
Silica
Silica gel
Sol-gel process
Sol-gels
Sols
Ultraviolet radiation
Nanoparticles
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08974756_v23_n6_p1374_Sicard
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario: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.

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