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- W1567350223 abstract "Spherical Bi 2 WO 6 nanoparticles were synthesized by a hydrothermal route. SEM observation shows that the size of the particles ranges from 60 to 120 nm and the average particle size is ~85 nm. TEM investigation shows that the particles are made up of subgrains with size of 5–10 nm. The bandgap energy of the particles is measured to be 2.93 eV by ultraviolet-visible diffuse reflectance spectroscopy. RhB was chosen as the target pollutant to evaluate the photocatalytic activity of the particles under irradiation of simulated sunlight, revealing that they exhibit an obvious photocatalytic activity. The effects of ethanol, KI, and BQ on the photocatalytic efficiency of Bi 2 WO 6 particles towards the RhB degradation were investigated. It is observed that ethanol has no effect on the photocatalytic degradation of RhB, whereas KI and BQ exhibit a substantial suppression of RhB degradation. No hydroxyl (•OH) is found, by the photoluminescence technique using terephthalic acid as a probe molecule, to be produced over the irradiated Bi 2 WO 6 particles. Based on the experimental results, photoexcited hole (h + ) and superoxide (•<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M1><mml:mrow><mml:msup><mml:mrow><mml:msub><mml:mrow><mml:mtext>O</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:mo>-</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>) are suggested to be the two main active species responsible for the dye degradation, while •OH plays a negligible role in the photocatalysis." @default.
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- W1567350223 date "2015-01-01" @default.
- W1567350223 modified "2023-10-11" @default.
- W1567350223 title "Synthesis of Spherical Bi<sub>2</sub>WO<sub>6</sub>Nanoparticles by a Hydrothermal Route and Their Photocatalytic Properties" @default.
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- W1567350223 doi "https://doi.org/10.1155/2015/146327" @default.
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