PTh/ZnO复合纳米粉的固相合成及其光谱特性

Synthesis and Spectral Properties of PTh/ZnO Nanocomposites

0引言 导电聚合物，无机物纳米复合材料具有纳米材料和导电聚合物的共同特性．因此在电催化、二次充电电池材料、超级电容器材料等方面具有良好的应用前景。聚噻吩（PTh）以及取代聚噻吩是导电聚合物领域中较早发现的具有环境稳定性和可加工性的材料之一。近年来，有关聚噻吩，无机物纳米复合材料的制备及其光电性能的研究倍受关注．Gebeyehu等用PTh敏化纳米晶TiO2光伏电池，发现其光伏效率明显优于固态光伏电池：Jayant等研究了PTh中的羧基基团的影响以及在纳米晶TiO2光伏电池中的光伏行为；Yang等嗍获得了PTh与TiO2纳米管的复合物，研究了二者之间的相互作用。相对而言．有关PTh与ZnO复合材料的报道还比较少。

ZnO, PTh and PTh/ZnO nanopowders were prepared by solid-state reaction method within 30 min, respectively. The microstructure, phase change, shape and the spectral properties of the products were characterized. The TEM result shows that PTh/ZnO nanocomposite has a rodlike shape with 20 nm × 80 nm. Infrared spectroscopy illustrates the formation of Zn-S bond. DRS analysis indicates that the absorption edge of PTh/ZnO is 605 nm and the polymerization degree of PTh in nanocomposite is 9. The thermal stability of the nanocomposite was better than pure PTh.