A template-based solvothermal method was successfully developed for the controlled synthesis of two-dimensional (2D) monoclinic WO nanoplate/nanosheet arrays and three-dimensional (3D) hexagonal WO nanosphere/nanocage structures with single crystal petals. The structure-directing agents played an important role in controlling the morphology and phase of WO samples. The results showed that the WO nanospheres exhibited the highest visible light absorption capacity and a photocurrent density of 0.37 mA cm at 1.23 V RHE under simulated sunlight. Moreover, the photocatalytic dye results displayed 83.2% methylene blue degradation and 87.9% rhodamine B degradation within 120 min under visible light irradiation. The high performance of the WO nanospheres, resulted from the hierarchical structure, increased surface area and enhanced light absorption, which improved the photogenerated charge carrier transfer and separation capability.
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| http://dx.doi.org/10.1039/d3ra07329g | DOI Listing |
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