title: Platinum nanoparticles on electrospun titania nanofibers as hydrogen sensing materials working at room temperature.
abstract: Platinum nanoparticles (PtNPs), with diameters of 3-10 nm, were synthesized by water phase reduction, using 3-mercapto-1-propanesulfonate (3MPS) as a hydrophilic capping agent. PtNPs were deposited by a dipcoating technique on titania nanofibers (TiO2NFs), obtained by electrospinning. The investigated properties of the Pt-TiO2 hybrid at room temperature show that this material combines the properties of photoconduction of titania and the photocatalytic activity of the hybrid. To assess the best performance of Pt-TiO2, different measurements were performed at room temperature, comparing hydrogen response under UV of the uncoated TiO2NFs, compared with the Pt-TiO2 system prepared with two different amounts of PtNPs. During the sensing tests toward hydrogen an enhancement of photoconductivity (150%), an increase in response (400%) and an overall improvement of their dynamic behaviour were observed.
authors: Department of Chemistry, University of Rome Sapiens, P.le A. Moro 5, I-00185 Rome, Italy. iole.venditti@uniroma1.it.
authors: Ilaria
authors: I
authors: Fratoddi
authors: Antonella
authors: A
authors: Macagnano
authors: Chiara
authors: C
authors: Battocchio
authors: Emiliano
authors: E
authors: Zampetti
authors: Iole
authors: I
authors: Venditti
authors: Maria V
authors: MV
authors: Russo
authors: Andrea
authors: A
authors: Bearzotti