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Nanofibers containing TiO2 nanoparticles formed using conventional and non-conventional electrospinning

机译:使用常规和非常规静电纺丝形成的包含TiO 2 纳米粒子的纳米纤维

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Electrospinning is a simple technique that has been largely used in the fabrication of nanofibers for a vast number of applications. In this work, we studied the formation of fibers containing polyvinylpyrrolidone (PVP), colloidal titanium dioxide (TiO2) nanoparticles, and ethyl alcohol as solvent. Titanium dioxide presents electrical, electrochemical, and catalytic properties that find several relevant applications. Fibers were formed using conventional electrospinning and, also, a non-conventional setup that uses a collector that consists of two connected parallel conducing wires separated by centimeters. The purpose of this modification was to obtain a net of fibers formed between the two parallel wires. Using a colloidal solution with an appropriated viscosity, a netlike structure is formed between the wires of the collector, with fibers presenting a certain degree of orientation (an advantage of the proposed modification of the electrospinning setup), and with diameters in the range of micro and nanometers. The use of Energy-Dispersive X-Ray Spectroscopy (EDS) confirmed the incorporation of titanium dioxide in the fibers.
机译:电纺丝是一种简单的技术,已广泛用于大量应用的纳米纤维的制造中。在这项工作中,我们研究了包含聚乙烯吡咯烷酮(PVP),胶体二氧化钛(TiO 2 )纳米粒子和乙醇作为溶剂的纤维的形成。二氧化钛具有电学,电化学和催化性能,可找到几种相关应用。光纤是使用常规电纺丝以及非常规设置形成的,该设置使用的收集器由两根相隔几厘米的连接的平行导线组成。该修改的目的是获得在两条平行线之间形成的纤维网。使用具有适当粘度的胶体溶液,在集电器的金属丝之间形成网状结构,纤维呈现一定程度的取向(建议的电纺丝装置改进形式的优点),并且直径在微米范围内和纳米。能量色散X射线光谱法(EDS)的使用证实了二氧化钛在纤维中的结合。

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