光催化
材料科学
X射线光电子能谱
罗丹明B
二氧化钛
漫反射红外傅里叶变换
氢氟酸
催化作用
扫描电子显微镜
透射电子显微镜
核化学
钛
微观结构
化学工程
降级(电信)
纳米技术
复合材料
有机化学
化学
冶金
工程类
电信
计算机科学
作者
Yijie Zhao,Xuan Huang,Rongrong Hu,Xingjian Wang,Zhangyu Gu,Xiaojuan Zhang,Yuan Zhao
摘要
Fluorinated-defective titanium dioxide (F-TiO2−x) was successfully synthesized by fluorination of TiO2 through the hydrothermal method. The microstructure and physicochemical properties of the catalyst were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and UV–vis diffuse reflectance spectroscopy (UV–vis DRS). As expected, F-TiO2−x demonstrates high photocatalytic activity and stability on dye degradation. Results indicated that fluorine element can effective for stabilizing Ti3+ and oxygen vacancies on the surface of F-TiO2−x. With the increase in the amount of hydrofluoric acid (HF) added, the photocatalytic performance of the prepared material is first increased and then decreased, and the catalyst shows the best performance when the amount of HF added is 0.3 mL. For three different dyes, the catalysts all showed a certain photocatalytic degradation performance, and the degradation effect of rhodamine B was the best.
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