氮掺杂二氧化钛/聚吡咯(TiO_2@Polypyrrole)纳米球的制备及其超声催化性能研究

Preparation of N-doped TiO_2@Polypyrrole(PPy) Nanospheres and Research on Ultrasonic Catalytic Performance

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。

This paper introduces the preparation of N-doped TiO2 nanospheres and improve the ultrasonic catalytic properties of TiO2 nanospheres. In order to improve its ultrasonic catalytic activity, we coated the polypyrrole（PPy） on the surface of TiO2 nanospheres by in situ-polymerization and in the process of preparation of TiO2 nanospheres, doping N ions, and enhance its ultrasonic catalytic efficiency（this experiment ultrasonic catalytic degradation Rhoda- mine B）. The morphology and structure of the composite were characterized by transmission electron microscopy （TEM）, faint infrared （FT-IR）, X-ray diffraction （XRD） and thermal gravimetric analysis （TGA）. The catalytic degradation of Rhodamine B under the condition of ultrasound by ultraviolet visible （UV-VIS） were researched. The result of UV-VIS spectroscopy demonstrated the materials showed efficiently ultrasonic catalytic degraded Rhoda- mine B.