聚噻吩/SnO_2复合材料的光化学制备及光催化性能

Photochemical Preparation of PTH/SnO_2 Composites and Their Photocatalytic Properties

在紫外灯辐照下,以噻吩和光化学制备的SnO2为主要原料,通过光照诱导噻吩单体在SnO2表面原位聚合,制得了含有共轭聚合物结构的聚噻吩/SnO2(PTH/SnO2)复合材料,并通过X射线衍射、扫描电镜、EDS能谱、红外光谱等手段对复合材料进行了表征。以甲基橙为主要目标污染物,考察了PTH/SnO2复合材料在紫外光和太阳光下光催化降解污染物的性能。结果表明,与纯SnO2相比,PTH/SnO2复合材料有较好的光催化性能。

Under the ultraviolet light irradiation,the polythiophene/tin dioxide（PTH/SnO2）composites whose polymeric portions have conjugated segments were prepared via an in situ polymerization of thiophene onto SnO2 particles through photochemical reaction.The as-synthesized samples were characterized by means of X-ray diffraction,scanning electron microscopy,energy dispersive spectrometry,and Fourier transform infrared spectroscopy,etc..Using methyl orange solution as a target pollutant,photocatalytic activities of the PTH/SnO2 composites under UV and sun light irradiations were studied and consequently proved superior to those of pure SnO2.