Plasmonic semiconductor photocatalyst: Non-stoichiometric tungsten oxide

Area of Science:

• Materials Science
• Photocatalysis
• Nanotechnology

Background:

• Semiconductor photocatalysis is crucial for addressing energy and environmental challenges.
• Non-stoichiometric tungsten oxide (WO3-x) is a plasmonic semiconductor with unique properties and excellent photocatalytic performance.

Purpose of the Study:

• To review the fundamental properties of WO3-x.
• To summarize synthesis methods and modification strategies for WO3-x.
• To highlight the applications of WO3-x in various photocatalytic processes.

Main Methods:

• Review of synthesis techniques including solvothermal reaction, solid phase reduction, and exfoliation.
• Discussion of modification strategies such as doping and constructing homo-/hetero-junctions.
• Emphasis on practical applications in hydrogen evolution, nitrogen fixation, CO2 reduction, and pollutant degradation.

Main Results:

• WO3-x exhibits significant potential in diverse photocatalytic applications.
• Various synthesis and modification methods can tailor WO3-x properties for enhanced performance.

Conclusions:

• WO3-x is a versatile photocatalyst with broad applicability.
• Further research into fabrication techniques can optimize WO3-x performance for sustainable energy and environmental remediation.