Kim Wan-Tae, Park Dong-Cheol, Yang Wan-Hee, Cho Churl-Hee, Choi Won-Youl
Department of Advanced Materials Engineering, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Korea.
Research Institute for Dental Engineering, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Korea.
Nanomaterials (Basel). 2021 Jun 20;11(6):1616. doi: 10.3390/nano11061616.
Titanium dioxide has excellent chemical, electrical, and optical properties, as well as good chemical stability. For that reason, it is widely used in many fields of study and industry, such as photocatalysts, organic solar cells, sensors, dental implants, and other applications. Many nanostructures of TiO have been reported, and electrospinning is an efficient practical technique that has a low cost and high efficiency. In various studies on improving performance, the researchers created nanofibers with suitable microstructures by changing various properties and the many process parameters that can be controlled. In this study, PVP/TiO nanofibers were fabricated by the electrospinning process. The diameters of the nanofibers were controlled by various parameters. To understand the effects on the diameter of the nanofibers, various process parameters were controlled: the molecular weight and concentration of the polymers, deionized water, applied voltage, fluid velocity, and concentration of titanium precursor. The average diameter of the PVP nanofibers was controlled in a range of 42.3 nm to 633.0 nm. The average diameter of the PVP/TiO nanofibers was also controlled in a range of 63.5 nm to 186.0 nm after heat treatment.
二氧化钛具有优异的化学、电学和光学性能，以及良好的化学稳定性。因此，它被广泛应用于许多研究和工业领域，如光催化剂、有机太阳能电池、传感器、牙科植入物及其他应用。已经报道了许多二氧化钛的纳米结构，而静电纺丝是一种高效实用的技术，具有低成本和高效率的特点。在各种关于提高性能的研究中，研究人员通过改变各种性质和许多可控制的工艺参数，制备出了具有合适微观结构的纳米纤维。在本研究中，通过静电纺丝工艺制备了聚乙烯吡咯烷酮/二氧化钛纳米纤维。纳米纤维的直径由各种参数控制。为了了解对纳米纤维直径的影响，控制了各种工艺参数：聚合物的分子量和浓度、去离子水、施加电压、流体速度和钛前驱体的浓度。聚乙烯吡咯烷酮纳米纤维的平均直径控制在42.3纳米至633.0纳米的范围内。经过热处理后，聚乙烯吡咯烷酮/二氧化钛纳米纤维的平均直径也控制在63.5纳米至186.0纳米的范围内。
