In situ formation of surface and bulk oxides in small palladium nanoparticles.

Autor: Bugaev AL; The Smart Materials Research Institute, Southern Federal University, Sladkova 178/24, Rostov-on-Don, 344090, Russia. abugaev@sfedu.ru., Zabilskiy M, Skorynina AA, Usoltsev OA, Soldatov AV, van Bokhoven JA
Jazyk: angličtina
Zdroj: Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2020 Nov 07; Vol. 56 (86), pp. 13097-13100. Date of Electronic Publication: 2020 Sep 23.
DOI: 10.1039/d0cc05050d
Abstrakt: Evolution of surface and bulk palladium oxides in supported palladium nanoparticles was followed in situ using X-ray absorption spectroscopy. The surface oxide was found to be easily reducible in hydrogen at room temperature, while removal of bulk oxide required heating in hydrogen above 100 °C. We also found that the co-presence of hydrogen and oxygen favours a stronger oxidation of palladium particles compared to pure oxygen.
Databáze: MEDLINE