Comparative study on the synthesis and photocatalytic performance of Bi 2 WO 6 nanosheets prepared via molten salt and hydrothermal method
作者： Gui Yang , Yujun Liang , Kai Li , Jian Yang , Yingli Zhu
DOI: 10.1007/S10854-018-9565-3
关键词: Materials science 、 Photodegradation 、 Molten salt 、 Photocatalysis 、 Rhodamine B 、 Visible spectrum 、 Hydrothermal circulation 、 Crystallinity 、 Diffuse reflection 、 Chemical engineering
摘要: In this study, Bi2WO6 nanosheets were synthesized via molten salt (M-Bi2WO6) and hydrothermal method (H-Bi2WO6), respectively. Powder X-ray diffraction scanning electron microscopy measurements demonstrated that the as-prepared samples preferred orientated alone {001} plane in both system, enabling formation of nanosheets. The results UV–vis diffuse reflection spectrum showed M-Bi2WO6 exhibited an obvious red shift visible light absorption band comparison with H-Bi2WO6 nanosheets, gap was 2.49 2.62 eV, As a result, reached as high 97.13% photodegradation efficiency Rhodamine B under 180 min sunlight irradiation, which two times higher than (86.88%). Meanwhile, rate over (97.30%) for TC degradation about (78.58%). much-enhanced photocatalytic performance attributed to better crystallinity, light-harvesting capability superior sorption capacity. Basing on detailed experimental study analysis, work could be practical guidance fabrication Bi2WO6-based microstructures enhanced efficiency.
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