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以钛酸丁酯、醋酸锌和聚乙烯吡咯烷酮为前驱物,将静电纺丝技术和高温煅烧法相结合,一步制备出异质结构的二氧化钛(TiO_2)/氧化锌(ZnO)纳米纤维。采用XRD、SEM、TEM、UV-Vis对样品进行表征。并以罗丹明B(RhB)为降解模拟污染物测试了紫外光照射下的光催化活性。制得的TiO_2/ZnO-1纳米纤维直径在100~150nm之间,长度在2μm以上,ZnO纳米颗粒均匀分散在TiO_2/ZnO-1纳米纤维表面;在紫外光条件下具有良好的光催化性能,在紫外光光照25min后TiO_2/ZnO-1对RhB的降解率达到100%,而在同样条件下纯TiO_2纳米纤维对RhB的降解率只有70.8%。
Titanium tetrabutoxide, zinc acetate and polyvinylpyrrolidone were used as precursors to fabricate titanium dioxide (TiO 2) / zinc oxide (ZnO) nanofibers heterostructured by electrospinning combined with high temperature calcination. The samples were characterized by XRD, SEM, TEM and UV-Vis. The photocatalytic activities under UV irradiation were tested with rhodamine B (RhB) as a simulated pollutant. The diameter of TiO 2 / ZnO-1 nanofibers was between 100-150 nm and the length was more than 2 μm. The ZnO nanoparticles were uniformly dispersed on the surface of TiO 2 / ZnO-1 nanofibers. Under the condition of UV light, the photocatalytic properties of TiO 2 / The degradation rate of RhB by TiO 2 / ZnO-1 reached 100% after UV light irradiation for 25 min, while the degradation rate of RhB by pure TiO 2 nanofibers was only 70.8% under the same conditions.