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Water adsorption on graphene/Pt(111) at room temperature: A vibrational investigation

Author(s): A. Politano | A. R. Marino | V. Formoso | G. Chiarello

Journal: AIP Advances
ISSN 2158-3226

Volume: 1;
Issue: 4;
Start page: 042130;
Date: 2011;
Original page

Water interaction with quasi-freestanding graphene deposited on Pt(111) has been investigated by using vibrational spectroscopy. Loss measurements show that water molecules dosed at room temperature can dissociate giving rise to C-H bonds. The formation of the C-H bonds strongly attenuates the optical phonons of the graphene sheet. On the other hand, at 100 K water has been found to adsorb only in molecular state. Present findings should be taken into account in engineering graphene-based devices which should work at atmospheric pressure and at room temperature.
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