Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5145532 | International Journal of Hydrogen Energy | 2017 | 8 Pages |
Abstract
Pt/PtO2 nanoparticles (NPs) have been prepared by a simple synthetic strategy, easily able to control nanoparticles (NPs) size, consisting in the thermolysis of a suitable precursor in organic solvent under a low oxygen enriched atmosphere. An excellent combination of a low tafel slope of 31Â mV/dec with a negligible overpotential was measured for our Pt/PtO2 NPs, due to PtO2 resulting in electron rich Pt island, showing activity higher than that of common Pt. Additionally, the paper proves that it is possible to improve platinum/platinum oxide activity through control of NPs size and reduce platinum loading through its junction and interaction with a further metal oxide. Very high hydrogen production rate of 3.35Â mLÂ cmâ2Â hâ1 at â0.024Â V, obtained by means of an on-line mass spectrometry analysis, to corroborate the results with a realistic hydrogen production estimation, was measured for Pt/PtO2 electrode. Moreover, Pt/PtO2 was stable in corrosive acidic solution during electrolysis under high current density.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Maria Sarno, Eleonora Ponticorvo,