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Formation of Pt nanoparticles in mesoporous silica channels via direct low-temperature decomposition of H2PtCl6.6H2O
Ist Teil von
Materials letters, 2013-09, Vol.106, p.193-196
Erscheinungsjahr
2013
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Highly dispersed Pt nanoparticles were formed in the mesoporous channels of SBA-15 via direct low-temperature decomposition of H2PtCl6.6H2O by an improved solid-liquid route. During the preparation, solid H2PtCl6.6H2O turned into liquid and infiltrated the channels of SBA-15 when the temperature was above its melting point. The reaction process was analyzed by different characterizations. The results show that the solid intermediate phase, PtCl2, could not flow and assemble in the mesoporous channels during the heat-treatment; thus, it transformed into dispersed Pt nanoparticles after the reaction. Furthermore, as a nanoreactor, the mesoporous system had a nano-confinement effect on the low-temperature formation of Pt.