RT Journal Article
T1 Effect of Capping Ligands for the Synthesis of Gold Nanoparticles and on the Catalytic Performance for the Oxidation of 5-Hydroxymethyl-2-furfural.
A1 Liuzzi, Francesca
A1 Ventimiglia, Alessia
A1 Allegri, Alessandro
A1 Rodríguez-Aguado, Elena
A1 Cecilia-Buenestado, Juan Antonio
A1 Rivalta, Ivan
A1 Dimitratos, Nikolaos
A1 Albonetti, Stefania
K1 Nanopartículas
K1 Oro
K1 Catalizadores
AB Different series of Au on carbon catalysts were prepared via sol-immobilization to investigate the role of polymers (polyvinylpyrrolidone PVP, polyethylene glycol PEG and polyvinyl alcohol PVA), employed as gold nanoparticle (NP) stabilizers, on catalyst properties and on catalytic activity. The synthesized materials were widely characterized with several techniques (DLS, XRD, TEM and XPS) and used as catalysts in the 5-hydroxymethylfurfural (HMF) oxidation to produce 2,5-furandicarboxylic acid (FDCA). The obtained results clearly demonstrated the PVA leading to the formation of smaller and more active NPs. On the contrary, polyethylene glycol was shown to affect gold exposure and, as a consequence, to reduce the catalyst activity due to steric effects while PVP-based catalysts presented bigger and more covered Au NPs. The investigation on the reusability of the catalysts demonstrated the presence of a significant deactivation on all prepared materials, but the presence of higher amounts of polymer seems to have a positive effect on catalyst stability even if associated with lower reactivity. Computational studies have provided interesting information on the NP-polymer interactions and consequently on the catalytic activities.
PB MDPI
YR 2023
FD 2023-06-09
LK https://hdl.handle.net/10630/27093
UL https://hdl.handle.net/10630/27093
LA eng
NO Liuzzi F, Ventimiglia A, Allegri A, Rodríguez-Aguado E, Cecilia JA, Rivalta I, Dimitratos N, Albonetti S. Effect of Capping Ligands for the Synthesis of Gold Nanoparticles and on the Catalytic Performance for the Oxidation of 5-Hydroxymethyl-2-furfural. Catalysts. 2023; 13(6):990. https://doi.org/10.3390/catal13060990
NO Partial funding for open access charge: Universidad de Málaga
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 24 ene 2026