An Overview on WO3 based photocatalyst for environmental remediation

Vishal Dutta, Sheetal Sharma, Pankaj Raizada, Vijay Kumar Thakur, Aftab Aslam Parvaz Khan, Vipin Saini, Abdullah M Asiri, Pardeep Singh*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

2 Citations (Scopus)

Abstract

Environmental pollution and global energy demand require advanced photocatalytic materials such as visible-light-driven semiconductor photocatalysts. In particular, Tungsten oxide (WO3) appears promising candidate because of high absorption of visible light (up to 480nm), its tunable bandgap, and outstanding optical properties. Fascinatingly, WO3 also hold advantages like nontoxic nature, economic cost, and stability in oxidative and acidic conditions. It is well-known that various synthetic procedures can be utilized for fabrication of a photocatalyst with different morphologies, sizes and structures which are dynamic on its catalytic performance to distinctive degrees. This review comprises several synthesis ways which are low-cost and environmentally friendly and detail analysis of the relationship between morphology control and photocatalytic performance of WO3. Additionally, some top strategies for enhancing the photocatalytic performance of semiconductor WO3, like as elemental doping, hybridization with co-catalyst, heterojunction formation etc. are also summarized. Moreover, photocatalytic enhancement aspects and photocatalytic mechanisms of WO3/semiconductor photocatalyst were elaborated. Lastly, the conclusion and main future prospects of WO3-based semiconductor photocatalysts were deliberated.
Original languageEnglish
Article number105018
JournalJournal of Environmental Chemical Engineering
Volume9
Issue number1
Early online date4 Jan 2021
DOIs
Publication statusPrint publication - Feb 2021

Keywords

  • Effective charge separation
  • Tungsten oxide
  • Wastewater remediation
  • Z-scheme semiconductors

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