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本文介绍了氮掺杂TiO2纳米球的制备方法,并对TiO2纳米球的超声催化性能进行改进,提高它的超声催化活性。改变方法是利用原位聚合法对TiO2纳米球进行聚吡咯(PPy)包覆来制备TiO2@PPy纳米球,并且在制备TiO2纳米球的过程中引入N离子,以此来提高它的催化效率(本实验超声催化降解罗丹明B),通过透射电镜(TEM)、红外光谱(FT-IR)、X射线衍射(XRD)和热重分析(TGA)对其结构和形貌进行了表征,并利用紫外可见光谱(UV-VIS)表征了其在超声条件下对罗丹明B的超声催化降解性能。结果表明:氮掺杂TiO2@PPy纳米球对罗丹明B有很好的超声催化降解性能。
In this paper, the preparation method of nitrogen-doped TiO2 nanospheres is introduced, and the ultrasonic catalysis of TiO2 nanospheres is improved to improve its ultrasonic catalysis activity. The method of modification is to prepare TiO2 @ PPy nanospheres by coating TiO2 nanospheres with polypyrrole (PPy) by in situ polymerization, and to introduce N ions during the preparation of TiO2 nanospheres to improve its catalytic efficiency ( In this experiment, Rhodamine B was ultrasonically degraded. Its structure and morphology were characterized by transmission electron microscopy (TEM), infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and thermal gravimetric analysis (TGA) Ultraviolet (UV-Vis) spectroscopy (UV-VIS) characterization of its ultrasonic degradation of rhodamine B under ultrasound conditions. The results show that the nitrogen-doped TiO2 @ PPy nanospheres have a good performance of sonocatalytic degradation of rhodamine B.