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以PVP/Ti(OC4H9)4溶胶为壳层,以PVP/Ni(CH3 COO)2·4H2O溶胶为核层,采用同轴静电纺丝法制备了核壳结构Ti(OC4H9)4/Ni(CH3COO)2·4H2O PVP纤维;用程序升温法,在550℃下烧结6 h,制备了NiO-TiO2同轴纳米纤维。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、红外吸收光谱(FTIR)、热重(TG)等测试技术对复合纳米纤维的结构和性能进行了表征,并研究了该催化剂在紫外光照射下对亚甲基蓝溶液的催化降解性能。结果表明,NiO-TiO2同轴纳米纤维具有很好的光催化活性,而且该复合催化剂可以循环使用。
The core-shell Ti (OC4H9) 4 / Ni (CH3COO) 4 was prepared by coaxial electrospinning using PVP / Ti (OC4H9) 4 sol as shell and PVP / Ni ) 2 · 4H2O PVP fibers; NiO-TiO2 coaxial nanofibers were prepared by temperature programmed sintering at 550 ℃ for 6 h. The structure and properties of the composite nanofibers were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), infrared absorption spectroscopy (FTIR) and thermogravimetric analysis (TG) Photocatalytic degradation of methylene blue solution under irradiation. The results show that, NiO-TiO2 coaxial nanofibers have good photocatalytic activity, and the composite catalyst can be recycled.