Controlling oxygen vacancies of WOx suboxides by ZnWO4 nanophase hybridization

B. B. Wang; X. X. Zhong; C. L. He; B. Zhang; R. W. Shao; V. Shvalya; U. Cvelbar; K. Ostrikov

doi:10.1016/j.mseb.2020.114706

Controlling oxygen vacancies of WO_x suboxides by ZnWO₄ nanophase hybridization

B. B. Wang, X. X. Zhong^*, C. L. He, B. Zhang, R. W. Shao, V. Shvalya, U. Cvelbar, K. Ostrikov

^*Corresponding author for this work

School of Medical and Technology

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Substoichiometric tungsten oxide (WO_x, 2 < x < 3) nanomaterials are important nanoscale semiconductor materials with broad applications in optoelectronic devices; however a controllable modification of their physical properties remains challenging task. Here, we report an alternative green synthesis of hybrid nanostructures composed by WO_x and ZnWO₄ phases in ethanol via a solvothermal process using ZnO and WCl₆ as the precursors. The results indicate that the formation of ZnWO₄ leads to the structural conversion of WO_x from nanorods to nanoparticles due to the effect of ZnWO₄ on the side growth of WO_x nanostructures. Moreover, the surface morphology tailored by ZnWO₄ and crystalline phase transformation induce different photoluminescence (PL) emission from pure WO_x nanostructures and WO_x/ZnWO₄ hybrid nanostructures due to the increased number of oxygen vacancies.

Original language	English
Article number	114706
Journal	Materials Science and Engineering: B
Volume	262
DOIs	https://doi.org/10.1016/j.mseb.2020.114706
Publication status	Published - Dec 2020

Keywords

Hybrid nanomaterials
Nanostructures
Photoluminescence
Tungsten oxide

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title = "Controlling oxygen vacancies of WOx suboxides by ZnWO4 nanophase hybridization",

abstract = "Substoichiometric tungsten oxide (WOx, 2 < x < 3) nanomaterials are important nanoscale semiconductor materials with broad applications in optoelectronic devices; however a controllable modification of their physical properties remains challenging task. Here, we report an alternative green synthesis of hybrid nanostructures composed by WOx and ZnWO4 phases in ethanol via a solvothermal process using ZnO and WCl6 as the precursors. The results indicate that the formation of ZnWO4 leads to the structural conversion of WOx from nanorods to nanoparticles due to the effect of ZnWO4 on the side growth of WOx nanostructures. Moreover, the surface morphology tailored by ZnWO4 and crystalline phase transformation induce different photoluminescence (PL) emission from pure WOx nanostructures and WOx/ZnWO4 hybrid nanostructures due to the increased number of oxygen vacancies.",

keywords = "Hybrid nanomaterials, Nanostructures, Photoluminescence, Tungsten oxide",

author = "Wang, {B. B.} and Zhong, {X. X.} and He, {C. L.} and B. Zhang and Shao, {R. W.} and V. Shvalya and U. Cvelbar and K. Ostrikov",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = dec,

doi = "10.1016/j.mseb.2020.114706",

language = "English",

volume = "262",

journal = "Materials Science and Engineering: B",

issn = "0921-5107",

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TY - JOUR

T1 - Controlling oxygen vacancies of WOx suboxides by ZnWO4 nanophase hybridization

AU - Wang, B. B.

AU - Zhong, X. X.

AU - He, C. L.

AU - Zhang, B.

AU - Shao, R. W.

AU - Shvalya, V.

AU - Cvelbar, U.

AU - Ostrikov, K.

PY - 2020/12

Y1 - 2020/12

N2 - Substoichiometric tungsten oxide (WOx, 2 < x < 3) nanomaterials are important nanoscale semiconductor materials with broad applications in optoelectronic devices; however a controllable modification of their physical properties remains challenging task. Here, we report an alternative green synthesis of hybrid nanostructures composed by WOx and ZnWO4 phases in ethanol via a solvothermal process using ZnO and WCl6 as the precursors. The results indicate that the formation of ZnWO4 leads to the structural conversion of WOx from nanorods to nanoparticles due to the effect of ZnWO4 on the side growth of WOx nanostructures. Moreover, the surface morphology tailored by ZnWO4 and crystalline phase transformation induce different photoluminescence (PL) emission from pure WOx nanostructures and WOx/ZnWO4 hybrid nanostructures due to the increased number of oxygen vacancies.

AB - Substoichiometric tungsten oxide (WOx, 2 < x < 3) nanomaterials are important nanoscale semiconductor materials with broad applications in optoelectronic devices; however a controllable modification of their physical properties remains challenging task. Here, we report an alternative green synthesis of hybrid nanostructures composed by WOx and ZnWO4 phases in ethanol via a solvothermal process using ZnO and WCl6 as the precursors. The results indicate that the formation of ZnWO4 leads to the structural conversion of WOx from nanorods to nanoparticles due to the effect of ZnWO4 on the side growth of WOx nanostructures. Moreover, the surface morphology tailored by ZnWO4 and crystalline phase transformation induce different photoluminescence (PL) emission from pure WOx nanostructures and WOx/ZnWO4 hybrid nanostructures due to the increased number of oxygen vacancies.

KW - Hybrid nanomaterials

KW - Nanostructures

KW - Photoluminescence

KW - Tungsten oxide

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DO - 10.1016/j.mseb.2020.114706

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VL - 262

JO - Materials Science and Engineering: B

JF - Materials Science and Engineering: B

M1 - 114706

ER -

Controlling oxygen vacancies of WO_x suboxides by ZnWO₄ nanophase hybridization

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Keywords

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