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WO3 nanocubes: Hydrothermal synthesis, growth mechanism, and photocatalytic performance

  • Lili Wang (a1), Hanmei Hu (a2), Junchan Xu (a2), Sane Zhu (a1), Aiqin Ding (a1) and Chonghai Deng (a1)...

Abstract

Regular WO3 nanocubes have been prepared on a large scale through a convenient hydrothermal route at the temperature of 200 °C. The products were characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy, UV-vis diffuse reflectance spectroscopy (DRS), and photoluminescence (PL) spectroscopy. A crystal growth process for WO3 nanocubes was simply proposed based on the comparative experiments. The band gap energy (Eg) was determined to be 2.58 eV based on the UV-vis DRS analysis, and the PL spectrum exhibited a strong blue light emission band centered at 469 nm. The as-prepared WO3 nanocubes showed higher visible light photocatalytic performance for degrading rhodamine B compared with WO3·H2O and WO3·0.33H2O/WO3 which were obtained at 80 °C and 140 °C, respectively, suggesting potential application in the region of wastewater purification.

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a)Address all correspondence to these authors. e-mail: hmhu@ustc.edu

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Keywords

WO3 nanocubes: Hydrothermal synthesis, growth mechanism, and photocatalytic performance

  • Lili Wang (a1), Hanmei Hu (a2), Junchan Xu (a2), Sane Zhu (a1), Aiqin Ding (a1) and Chonghai Deng (a1)...

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