A new catalyst material from electrospun PVDF-HFP nanofibers by using magnetron-sputter coating for the treatment of dye-polluted waters
A new catalyst material from electrospun PVDF-HFP nanofibers by using magnetron-sputter coating for the treatment of dye-polluted waters
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DOI：
10.1007/s42114-019-00105-8
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发表时间：
2019-09-01
影响因子：
20.1
通讯作者：
Polat, Kinyas
中科院分区：
文献类型：
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作者：
Gorgun, Neslihan;Ozer, Caglar;Polat, Kinyas
本研究采用静电纺丝技术在铝基上制备了聚偏氟乙烯-六氟丙烯共聚物(PVDF-HFP)基纳米纤维，并以Cu2O为光催化剂靶材，采用磁控溅射技术对其进行了包覆。用扫描电子显微镜、能谱和紫外漫反射光谱对所得材料进行了表征。在105W钨灯下考察了该材料对亚甲基蓝脱色的光催化活性。用紫外可见分光光度计在664 nm处跟踪亚甲基蓝浓度。光催化反应的动力学模型符合一级动力学。反应速率常数分别为0.0037、0.0044和0.0050 m in(-1)，半衰期分别为187m in、158m in和139m in。由于催化剂的真正设计，它允许用简单的镊子轻松地从溶液中去除材料，而不会有任何残留物，这是在从处理后的水中分离颗粒催化剂时，消除过滤过程中沉重和低产率的一步。
In this study, polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP)-based nanofibers were produced by electrospinning technique on aluminum substrate and coated with magnetron sputtering technique by using Cu2O photocatalyst target material. Resulting materials were characterized by SEM, EDX, and UV diffuse reflectance spectroscopy. Photocatalytic activity of the material was tested against methylene blue decolorization under 105 W tungsten light bulb. Methylene blue concentration was followed up by UV visible spectrophotometer at 664 nm. Kinetic modeling of the photocatalytic reaction was found suitable to the first-order kinetics. Reaction rate constants were 0.0037, 0.0044, and 0.0050 min(-1) respectively with corresponding half-life times of 187, 158, and 139 min. Thanks to the genuine design of the catalyst, it allowed easy removal of the material from the solution without any residue by simple tweezers which is a promising step for getting rid of heavy and low yield of filtration processes in the separation of particulate catalysts from the treated water.