TiO(2)@PEI-Grafted-MWCNTs Hybrids Nanocomposites Catalysts for CO(2) Photoreduction

Anatase (TiO(2)) and multiwalled carbon nanotubes bearing polyethylenimine (PEI) anchored on their surface were hybridized in different proportions according to a sol-gel method. The resulting nanocomposites (TiO(2)@PEI-MWCNTs), characterized by BET, XRD, XPS, SEM, and UV techniques, were found effi...

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Detalles Bibliográficos
Autores principales: Fusco, Caterina, Casiello, Michele, Catucci, Lucia, Comparelli, Roberto, Cotugno, Pietro, Falcicchio, Aurelia, Fracassi, Francesco, Margiotta, Valerio, Moliterni, Anna, Petronella, Francesca, D’Accolti, Lucia, Nacci, Angelo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5849004/
https://www.ncbi.nlm.nih.gov/pubmed/29461484
http://dx.doi.org/10.3390/ma11020307
Descripción
Sumario:Anatase (TiO(2)) and multiwalled carbon nanotubes bearing polyethylenimine (PEI) anchored on their surface were hybridized in different proportions according to a sol-gel method. The resulting nanocomposites (TiO(2)@PEI-MWCNTs), characterized by BET, XRD, XPS, SEM, and UV techniques, were found efficient catalysts for CO(2) photoreduction into formic and acetic acids in water suspension and under visible light irradiation. PEI-grafted nanotubes co-catalysts are believed to act as CO(2) activators by forming a carbamate intermediate allowing to accomplish the first example in the literature of polyamines/nanotubes/TiO(2) mediated CO(2) photoreduction to carboxylic acids.

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