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采用静电纺丝法和热处理工艺制备了纳米碳纤维负载掺杂1.5%(摩尔分数)Sm的纳米Ti O2复合材料(Sm-Ti O2/CNFs),利用SEM、EDX、TEM、FTIR和XRD对其组成和结构进行了表征,并以甲基橙为降解对象,考察了Sm-Ti O2/CNFs复合材料在紫外光照射下对甲基橙的光催化降解效果。结果表明,掺杂Sm3+的Ti O2以锐钛矿晶型均匀分散在碳纳米纤维的表面和内部,质量分数为20%左右;相对于未掺杂的Ti O2/CNFs样品,Sm-Ti O2/CNFs的光催化活性提高约37%。
The nanostructured Ti02 nanocomposites doped with 1.5% (mole fraction) Sm of Sm-Ti O2 / CNFs were prepared by electrospinning and heat treatment. Their compositions were characterized by SEM, EDX, TEM, FTIR and XRD. The structure of Sm-Ti O2 / CNFs composites was characterized by X-ray photoelectron spectroscopy (XRD) and X-ray diffraction (XRD). The photocatalytic degradation of methyl orange by Sm- The results show that Ti O2 doped with Sm3 + is uniformly dispersed in the anatase crystal form on the surface and inside of the carbon nanofibers with the mass fraction of about 20%. Compared with the undoped Ti O2 / CNFs samples, the Sm-Ti O2 / The photocatalytic activity of CNFs increased by about 37%.