0000000000513925
AUTHOR
Giuseppe Marci
CO2 Reduction in Photocatalytic Membrane Reactor: Products Selectivity Study
CO2 Reduction in Photocatalytic Membrane Reactor: Products Selectivity Study
Photoreforming of organics in aqueous suspension of Nb2O5/C3N4 composites to obtain H2
Photocatalysis based on the use of semiconductors has gained, during the recent years, increased attention as promising sustainable process for H2 and fine chemicals production, given the possibility of activating such photocatalysts by visible light radiation. The photo-reforming activity in this work has been measured under both UV-LED irradiation and natural sunlight illumination. Moreover, the presence of metallic Pt as co-catalysts has been studied. Carbon nitride (C3N4) based materials are good candidates for solar energy conversions. The choice of C3N4 and Nb2O5 arises from the fact that their heterojunction can lead to lower recombination between the photo-generated electrons and ho…
Catalytic valorisation of Chlorella sp. algae to obtain 5-Hydroxymethylfurfural in the presence of Nb2O5 or NbOPO4
Microalgae are interesting biomass able to growth in not-arable lands, in wastewaters or seawaters. There are plenty of species of microalgae and several of them find application in various industrial sectors because they are source of several products in an integrated biorefinery view. In this work two acidic heterogeneous catalysts, namely Nb2O5 and NbOPO4 have been used. Both are commercial products provided by CBMM and they have been physico-chemically characterised. The isomerisation/dehydration reactions proceed through a tandem pathway involving the Lewis and Brønsted acid sites provided by the surface of the acidic solids giving rise to the isomerization of glucose to fructose, foll…
Heterogeneous Photocatalysis: a Promising Tool for Green Organic Syntheses
The present work deals with a short review of some applications of photocatalysis to green organic synthesis of valuable products in mild experimental conditions and in the presence of water as solvent.