Suppression of Photoinduced Surface Oxidation of Vanadium Dioxide Nanostructures by Blocking Oxygen Adsorption | Zendy

Yan Yang | Zendy; Wei Wei | Zendy; Shuxiao Wang | Zendy; Tiantian Huang | Zendy; Menghui Yuan | Zendy; Rui Zhang | Zendy; Wanli Yang | Zendy; Tianning Zhang | Zendy; Yan Sun | Zendy; Yongjun Yuan | Zendy; ZhenTao Yu | Zendy; Xin Chen | Zendy; Ning Dai | Zendy

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Suppression of Photoinduced Surface Oxidation of Vanadium Dioxide Nanostructures by Blocking Oxygen Adsorption

Author(s) -

Yan Yang,

Wei Wei,

Shuxiao Wang,

Tiantian Huang,

Menghui Yuan,

Rui Zhang,

Wanli Yang,

Tianning Zhang,

Yan Sun,

Yongjun Yuan,

ZhenTao Yu,

Xin Chen,

Ning Dai

Publication year - 2019

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b02175

Subject(s) - vanadium , vanadium oxide , adsorption , nanomaterials , nanostructure , oxygen , materials science , chemical engineering , oxide , inert gas , coating , oxidation process , inorganic chemistry , nanotechnology , chemistry , organic chemistry , metallurgy , composite material , engineering

Controlling the surface is necessary to adjust the essential properties and desired functions of nanomaterials and devices. For nanostructured multivalent vanadium oxides, unwanted surface oxidation occurs at ambient atmosphere generally and needs to be suppressed or avoided. We describe the suppressed surface oxidation of VO 2 nanostructures through blocking oxygen adsorption. During an enhanced photoinduced surface oxidation process, the increased oxidation states of vanadium in VO 2 nanostructures are suppressed by the use of an inert atmosphere or coating. Intermediate oxidation states are observed, and an ALD-TiO 2 coating has a good antioxidant capacity for preventing the formation of oxygen-enriched components. Such oxidation suppression is beneficial to improving the stability of VO 2 nanostructures. Controllable surface oxidation helps us to understand the physical essentials of surface chemical reactions and achieve better control of surface functions and performances on correlated vanadium oxide nanostructures.

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