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-  2018 

TiOF2光催化降解甲基橙的影响因素研究

DOI: 10.13543/j.bhxbzr.2018.04.009

Keywords: 光催化,甲基橙,氟氧钛花状纳米球,
photocatalysis
,methyl orange,flower-shaped nanospheres of TiOF2

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Abstract:

通过溶胶-凝胶法制备氟氧钛(TiOF2)花状纳米球,采用X射线粉末衍射仪(XRD)、扫描电子显微镜(SEM)、傅里叶红外光谱分析仪(FT-IR)和固体紫外漫反射仪(UV-Vis DRS)等手段对TiOF2花状纳米球进行表征分析,并通过实验探究了不同条件下TiOF2对甲基橙染料废水的光催化降解性能。在300 W氙灯模拟太阳光照射2.5 h条件下,质量浓度0.5 g/L TiOF2光催化剂对初始质量浓度20 mg/L、pH呈中性、体积为100 mL的甲基橙染料废水在20 ℃反应条件下降解效果最佳,催化降解率可达97.3%。此结果说明所制备的TiOF2光催化剂对甲基橙染料废水具有良好的光催化活性。
Abstract:We have successfully synthesized flower-shaped TiOF2 nanospheres via a sol-gel method. The samples were characterized by XRD, SEM, FT-IR and UV-vis DRS spectroscopy. In addition, the photocatalytic properties of TiOF2 flower-shaped nanospheres were studied using the degradation of methyl orange (MO) under different conditions. The results show that when 0.5 g/L of TiOF2 flower-shaped nanospheres was added to 100 mL of solution with 20 mg/L of neutral MO at room temperature, the degradation ratio reached 97.3% after 2.5 hours when irradiating under a 300 W xenon lamp. The results show that as-prepared TiOF2 flower-shaped nanospheres have outstanding catalytic activity in the photocatalytic degradation of MO dye wastewater under sunlight.

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