Effect of Hydrothermal Conditions on Crystal Structure, Morphology and Visible-Light Driven Photocatalysis of WO₃ Nanostructures

Abstract:

Tungsten trioxide (WO₃) nanostructures were synthesized by a hydrothermal method, and the influence of essential hydrothermal conditions, temperature and time, on their crystal structure, morphology and visible-light driven photocatalysis was studied. The hydrothermal temperature was varied from 120 °C to 200 °C, and the hydrothermal time changed from 12 h to 32 h. The crystal structure, morphology and photocatalytic performance of WO₃ nanostructures were characterized by XRD, SEM and UV-Vis. The crystal structure of WO₃ nanostructure was triclinic phase and their morphology was mainly one dimensional nanorods. Methylene blue was used as the target to evaluate their photocatalytic performance under visible light (λ>420 nm). The photocatalytic results suggest the suitable hydrothermal conditions to synthesize WO₃ nanostructures for the wastewater treatment application.

• Periodical: Materials Science Forum (Volume 993)
• Pages: 893-898
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.993.893
• Online since: May 2020
• Authors: Yang Si Liu, Xiao Li Xi*, Zuo-Ren Nie, Lin Yan Zhao, You Shu Fan
• Keywords: Crystal Structure, Hydrothermal, Photocatalysis, Visible-Light, WO₃

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