Photocatalytic Material: Nano WO3

As a photocatalytic material, nano WO3 is welcomed as it has divergent admirable features like high stability, non-toxicity, ease of preparation, suitable band edge positions and facile generation of active oxygen species in the aqueous medium. Nano WO3 finds unparalleled opportunity in wastewater purification under UV/visible light. While the perennial failings of the photocatalytic material emanate from the stumbling blocks like rapid charge carrier recombination and meager visible light response.

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So, in order to overcome its critical drawbacks, the experts tailor the surface-bulk electronic structure through the calibrated and veritable approaches such as impurity doping, deposition with noble metals, sensitizing with other compounds (dyes, polymers, inorganic complexes and simple chelating ligands), hydrogenation process (annealing under hydrogen atmosphere), electronic integration with other semiconductors, modifying with carbon nanostructures, designing with exposed facets and tailoring with hierarchical morphologies. The experts also introduced that future research must focus on comparing the performances of nano WO3 in parallel to get insight into its photocatalytic behaviors.

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