Non-catalytic hydrogenation of VO2 in acid solution
Chen Y.3; Wang Z.1; Chen S.3; Ren H.3; Wang L.3; Zhang G.3; Lu Y.3; Jiang J.1; Zou C.3; Luo Y.1
Source PublicationNature Communications
AbstractHydrogenation is an effective way to tune the property of metal oxides. It can conventionally be performed by doping hydrogen into solid materials with noble-metal catalysis, high-temperature/pressure annealing treatment, or high-energy proton implantation in vacuum condition. Acid solution naturally provides a rich proton source, but it should cause corrosion rather than hydrogenation to metal oxides. Here we report a facile approach to hydrogenate monoclinic vanadium dioxide (VO) in acid solution at ambient condition by placing a small piece of low workfunction metal (Al, Cu, Ag, Zn, or Fe) on VO surface. It is found that the attachment of a tiny metal particle (~1.0 mm) can lead to the complete hydrogenation of an entire wafer-size VO (>2 inch). Moreover, with the right choice of the metal a two-step insulator-metal-insulator phase modulation can even be achieved. An electron-proton co-doping mechanism has been proposed and verified by the first-principles calculations.
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Cited Times [WOS]:27   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Hefei National Laboratory for Physical Sciences at Microscale
2.Henan University of Science and Technology
3.University of Science and Technology of China
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GB/T 7714
Chen Y.,Wang Z.,Chen S.,et al. Non-catalytic hydrogenation of VO2 in acid solution[J]. Nature Communications,2018,9(1).
APA Chen Y..,Wang Z..,Chen S..,Ren H..,Wang L..,...&Luo Y..(2018).Non-catalytic hydrogenation of VO2 in acid solution.Nature Communications,9(1).
MLA Chen Y.,et al."Non-catalytic hydrogenation of VO2 in acid solution".Nature Communications 9.1(2018).
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