Fabrication and characterization of electrospun TiO2/CuS micro–nano-scaled composite fibers
Fabrication and characterization of electrospun TiO2/CuS micro–nano-scaled composite fibers
复制标题
DOI：
10.1016/j.pnsc.2011.12.010
复制
发表时间：
2012-02
期刊：
影响因子：
--
通讯作者：
Delong Li;C. Pan
中科院分区：
文献类型：
--
作者：
Delong Li;C. Pan
本研究开发了一种采用静电纺丝技术和化学沉淀法制备新型微纳尺度TiO2/CuS复合纤维的工艺。使用 SEM、FT-IR、UV-vis 和荧光光谱对纤维的微观结构和光电性能进行了表征。结果表明，复合纤维中的TiO2部分为金红石相和锐钛矿相的混合相，而TiO2和CuS已完全复合。纤维表面光滑，直径为50-300nm。与纯TiO2纤维相比，TiO2/CuS微纳米级复合纤维在可见光区域表现出强烈的吸收，光生电荷分离效率得到提高。该复合体系在太阳能电池、超级电容、光催化等领域具有广泛的潜在应用。
A process to fabricate a kind of novel micro–nano scaled TiO2/CuS composite fibers by electrospinning technique and chemical precipitation method was developed in the present study. The microstructures and photoelectronic properties of the fibers were characterized using SEM, FT-IR, UV–vis and fluorescence spectroscopy. The results revealed that the TiO2portion in the composite fibers was a mixture rutile and anatase phases while TiO2and CuS had been fully composite. The fibers had smooth surface with a diameter of 50–300nm. Comparing with pure TiO2fiber, the TiO2/CuS micro–nano-scaled composite fibers exhibited a strong absorption in the visible light region and the efficiency of photo-induced charge separation were enhanced. This composite system is of widely potential applications in the areas such as solar cells, supercapacity, photocatalysis, etc.