Photothermal Conversion of W(18)O(49) with a Tunable Oxidation State

W(18)O(49) with a tunable oxidation state was prepared by addition of NaNO(3) or NaBH(4) as a redox agent in the solvothermal system. The addition of redox agents has no influence on the crystallization of W(18)O(49). The obtained W(18)O(49) structures keep their morphology as a bundle of nanowires...

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Detalles Bibliográficos
Autores principales: Fang, Zhenxing, Jiao, Shihui, Kang, Yutang, Pang, Guangsheng, Feng, Shouhua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2017
Materias:
Full Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5390804/
https://www.ncbi.nlm.nih.gov/pubmed/28413762
http://dx.doi.org/10.1002/open.201600149
Descripción
Sumario:W(18)O(49) with a tunable oxidation state was prepared by addition of NaNO(3) or NaBH(4) as a redox agent in the solvothermal system. The addition of redox agents has no influence on the crystallization of W(18)O(49). The obtained W(18)O(49) structures keep their morphology as a bundle of nanowires with a regular hexagonal on the cross‐section. W(18)O(49) exhibits strong valence‐dependent absorption features in the near‐IR region. Reduced W(18)O(49) with more W(5+) has a higher concentration of oxygen vacancies, which enhances the localized surface plasmon resonance effect. Reduced W(18)O(49) exhibits a high photothermal conversion efficiency of 59.6 % and has good photothermal stability.

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