ausblenden:
Schlagwörter:
Copper, Zink Oxide, Zirconium Dioxide, metal-support interaction, contact angle, adhesion
26, Cu nanoparticles/synthesis and application in steam reforming
Zusammenfassung:
A technique of contact angle measurement was applied to the nano-scale oxide-supported metal particles. For Cu supported on ZnO and ZrO2 the angles were found to increase and the work of adhesion to decrease with increasing particle size. Such a trend is interpreted as an effect of negative contact line tension of 2.1•10-9 J m-1 and 1.0•10-9 J m-1 in the Cu/ZnO and Cu/ZrO2 system, correspondingly. For the small-sized Cu particles the apparent work of adhesion on ZnO support is higher than that on ZrO2.