Photocatalytic Properties of Tungstate Nanomaterials
Summary
Tungstate nanomaterials leverage the distinctive electronic interactions between tungsten and oxygen to drive light-induced redox reactions. Typical crystal structures include wolframite (as in NiWO₄) and scheelite (as in ZnWO₄), whose band edges, formed predominantly by W 5d and O 2p orbitals, can be tailored via particle size, morphology and composition. At the nanoscale, increased surface-to-volume ratios and shortened charge-carrier paths enhance reaction rates. Strategies such as heteroatom doping, facet engineering and formation of composites with graphene or other semiconductors suppress electron–hole recombination and extend photoresponse into the visible region. These advances underpin efficient degradation of organic pollutants, water splitting and microbial disinfection under UV and visible irradiation. Thanks to their chemical robustness, environmental compatibility and tunable optoelectronic properties, tungstate photocatalysts are emerging as key materials for sustainable environmental remediation and solar-energy conversion.
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Photocatalytic Properties of Tungstate Nanomaterials publication trend
The graph below shows the total number of articles in photocatalytic properties of tungstate nanomaterials across all publications each year (not limited to Nature Index journals).
Technical terms
Photocatalysis: Acceleration of a chemical reaction by a material that absorbs light and generates reactive charge carriers.
Band gap energy: Minimum energy difference between the valence and conduction bands determining light-absorption threshold.
Heterojunction: Interface between two semiconductors with differing band structures that promotes directional charge separation.
Electron–hole recombination: Process where photogenerated electrons and holes annihilate, reducing photocatalytic efficiency.
Nanocomposite: Hybrid material composed of two or more nanoscale constituents that synergistically enhance functional properties.
References
- Hydrothermal Synthesis, Characterization and Exploration of Photocatalytic Activities of Polyoxometalate: Ni-CoWO4 Nanoparticles. Crystals (2021).
- Increasing the photocatalytic efficiency of ZnWO4 by synthesizing a Bi2WO6/ZnWO4 composite photocatalyst. Catalysis Today (2022).
- Synthesis, Characterization and Enhanced Visible Light Photocatalytic Performance of ZnWO4-NPs@rGO Nanocomposites. Catalysts (2021).
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