Cu/ZnO and Cu/ZrO2 interactions studied by contact angle measurement with TEM

Igor Kasatkin; Benjamin Kniep; Thorsten Ressler

doi:10.1039/B616795K

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Physical Chemistry Chemical Physics

Issue 7, 2007

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Cu/ZnO and Cu/ZrO₂ interactions studied by contact angle measurement with TEM

Igor Kasatkin , Benjamin Kniep and Thorsten Ressler

Phys. Chem. Chem. Phys., 2007, 9, 878-883

DOI: 10.1039/B616795K
Received 16 Nov 2006, Accepted 04 Dec 2006
First published on the web 19 Dec 2006

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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.

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Physical Chemistry Chemical Physics

Cu/ZnO and Cu/ZrO₂ interactions studied by contact angle measurement with TEM

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