Core-Shell Metal Oxide Nanowire Array to Analyze Adsorption Behaviors of Volatile Molecules

We investigated material dependent molecule-to-surface interactions of volatile molecules using a core-shell metal oxide nanowire array. Varying the metal oxide species (ZnO, ZrO2 and TiO2), we clearly observed the metal cation dependence on the bonding strength of 2-nonanone. In addition, the quantitative analysis of molecular adsorption amount was successfully performed using the nanowire array. The results highlighted that the core-shell nanowire array provides a foundation for understanding and designing the molecule-to-surface interactions on various applications.