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Title: Reversible hydrophobic to hydrophilic transition in graphene via water splitting induced by UV irradiation
Authors: Xu, Z
Ao, Z
Chu, D
Younis, A
Li, CM
Li, S
Keywords: Graphene
Ultraviolet radiation
Hydroxyl radicals
Issue Date: 1-Sep-2014
Publisher: Macmillan Publisher
Citation: Xu, Z., Ao, Z., Chu, D., Younis, A., Li, C. M., & Li, S. (2014). Reversible hydrophobic to hydrophilic transition in graphene via water splitting induced by UV irradiation. Scientific Reports, 4, 6450. doi:10.1038/srep06450
Abstract: Although the reversible wettability transition between hydrophobic and hydrophilic graphene under ultraviolet (UV) irradiation has been observed, the mechanism for this phenomenon remains unclear. In this work, experimental and theoretical investigations demonstrate that the H2O molecules are split into hydrogen and hydroxyl radicals, which are then captured by the graphene surface through chemical binding in an ambient environment under UV irradiation. The dissociative adsorption of H2O molecules induces the wettability transition in graphene from hydrophobic to hydrophilic. Our discovery may hold promise for the potential application of graphene in water splitting. © 2014, Macmillan Publishers Limited
ISSN: 2045-2322
Appears in Collections:Journal Articles

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