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Materials, Vol. 11, Pages 307: TiO2@PEI-Grafted-MWCNTs Hybrids Nanocomposites Catalysts for CO2 Photoreduction

Materials, Vol. 11, Pages 307: TiO2@PEI-Grafted-MWCNTs Hybrids Nanocomposites Catalysts for CO2 Photoreduction

Materials doi: 10.3390/ma11020307

Authors: Caterina Fusco Michele Casiello Lucia Catucci Roberto Comparelli Pietro Cotugno Aurelia Falcicchio Francesco Fracassi Valerio Margiotta Anna Moliterni Francesca Petronella Lucia D’Accolti Angelo Nacci

Anatase (TiO2) 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 (TiO2@PEI-MWCNTs), characterized by BET, XRD, XPS, SEM, and UV techniques, were found efficient catalysts for CO2 photoreduction into formic and acetic acids in water suspension and under visible light irradiation. PEI-grafted nanotubes co-catalysts are believed to act as CO2 activators by forming a carbamate intermediate allowing to accomplish the first example in the literature of polyamines/nanotubes/TiO2 mediated CO2 photoreduction to carboxylic acids.

Authors:   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
Journal:   Materials
Volume:   11
edition:   2
Year:   2018
Pages:   307
DOI:   10.3390/ma11020307
Publication date:   20-Feb-2018
Facts, background information, dossiers
  • nanocomposites
  • light
  • hybrids
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