Selective photo-oxidation of cellobiose with tio2-supported metal nanoparticles

Lombardi, Erica (2013) Selective photo-oxidation of cellobiose with tio2-supported metal nanoparticles. [Laurea magistrale], Università di Bologna, Corso di Studio in Chimica industriale [LM-DM270]
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Upgrade of biomass to valuable chemicals is a central topic in modern research due to the high availability and low price of this feedstock. For the difficulties in biomass treatment, different pathways are still under investigation. A promising way is in the photodegradation, because it can lead to greener transformation processes with the use of solar light as a renewable resource. The aim of my work was the research of a photocatalyst for the hydrolysis of cellobiose under visible irradiation. Cellobiose was selected because it is a model molecule for biomass depolymerisation studies. Different titania crystalline structures were studied to find the most active phase. Furthermore, to enhance the absorption of this semiconductor in the visible range, noble metal nanoparticles were immobilized on titania. Gold and silver were chosen because they present a Surface Plasmon Resonance band and they are active metals in several photocatalytic reactions. The immobilized catalysts were synthesized following different methods to optimize the synthetic steps and to achieve better performances. For the same purpose the alloying effect between gold and silver nanoparticles was examined.

Tipologia del documento
Tesi di laurea (Laurea magistrale)
Autore della tesi
Lombardi, Erica
Relatore della tesi
Corso di studio
Ordinamento Cds
Parole chiave
photocatalysis hydrolysis of biomass selective oxidation gold and silver nanoparticles titania
Data di discussione della Tesi
18 Ottobre 2013

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