纳米钒酸铋/偕胺肟纤维的制备及光催化性能

以Bi(NO3)3和NH4VO3作为原料,偕胺肟纤维作为配体,采用液相法合成钒酸铋/偕胺肟纤维(BiVO4/AOCF),通过X射线粉末衍射(XRD)、扫描电子显微镜(SEM)、能谱(EDS)等手段对样品进行了表征分析,结果显示,颗粒状的BiVO4均匀分布在纤维表面,并以配位键的形式与纤维结合。以罗丹明B为模拟污染物来考察BiVO4/AOCF的光催化活性,实验结果表明,BiVO4/AOCF有着很好的光催化活性,并且在酸性条件下的催化活性更好。催化剂对活性黄、亚甲基蓝和甲基橙也表现出很好的光催化活性,且可以重复使用多次,光催化反应过程符合一级反应动力学。

Synthesis and photocatalytic properties of nano-BiVO4/amidoxime fiber composites

BiVO4/amidoxime fiber (AOCF) was prepared via a facile liquid-phase synthesis approach, employing Bi(NO3)3 and NH4VO3 as starting materials, amidoxime fiber as carrier. The structure and composition of the product were determined by powder X-ray diffraction (XRD), scanning electron microscopy(SEM), energy dispersive spectrometry(EDS). The results show that the distribution of BiVO4 is distributed on the surface of the fiber, which is the combination of the key and the fiber. The results of photodegrading rhoda mine B showed that BiVO4/AOCF has good photocatalytic degradation and the catalytic activity is better under acidic condition. Catalyst on the reactive yellow, methylene blue and methyl orange also show good photocatalytic activity and can be reused many times, the photocatalytic reaction process accords with first-order kinetics.