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首页> 外文期刊>Journal of Materials Research >WO_3 nanocubes: Hydrothermal synthesis, growth mechanism, and photocatalytic performance
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WO_3 nanocubes: Hydrothermal synthesis, growth mechanism, and photocatalytic performance

机译：WO_3纳米立方体：水热合成，生长机理和光催化性能

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摘要

Regular WO3 nanocubes have been prepared on a large scale through a convenient hydrothermal route at the temperature of 200 degrees 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 center dot H2O and WO3 center dot 0.33H(2)O/WO3 which were obtained at 80 degrees C and 140 degrees C, respectively, suggesting potential application in the region of wastewater purification.
机译：通过便利的水热路线，在200摄氏度的温度下已大规模制备了常规的WO3纳米立方体。产品的特征在于粉末X射线衍射（XRD），场发射扫描电子显微镜，紫外可见漫反射光谱（DRS）和光致发光（PL）光谱。根据比较实验，简单地提出了WO3纳米晶的晶体生长过程。根据UV-vis DRS分析确定带隙能量（Eg）为2.58 eV，并且PL光谱显示出以469 nm为中心的强蓝光发射带。与分别在80摄氏度和140摄氏度获得的WO3中心点H2O和WO3中心点0.33H（2）O / WO3相比，所制备的WO3纳米立方体显示出更高的可见光降解罗丹明B的光催化性能。在废水净化领域的应用。

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