论文部分内容阅读
以Bi(NO_3)_3和Na_2WO_4为原料、偕胺肟纤维作为配体,采用液相法合成钨酸铋/偕胺肟纤维(Bi_2WO_6/AOCF),通过X射线粉末衍射仪(XRD)、扫描电子显微镜(SEM)、能谱分析仪(EDS)等对样品进行了表征分析。以罗丹明B的降解率为指标进行考察,可知,Bi_2WO_6/AOCF最佳制备条件为:Bi(NO_3)_3用量为1.0mmol,Na_2WO_4用量为0.5mmol,温度为70℃,反应时间为24h。以罗丹明B、活性黄、亚甲基蓝、甲基橙为模拟污染物来考察Bi_2WO_6/AOCF的光催化活性,结果表明,Bi_2WO_6/AOCF对4种染料都有很好的光催化降解能力,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。
Bismuth tungstate / amidoxime fiber (Bi_2WO_6 / AOCF) was synthesized by liquid phase method using Bi (NO_3) _3 and Na_2WO_4 as raw materials, and amidoxime fiber as ligand. The structure and structure of the films were characterized by XRD, Microscopy (SEM), energy dispersive spectroscopy (EDS) and other samples were characterization analysis. According to the degradation rate of Rhodamine B, the optimal preparation conditions of Bi_2WO_6 / AOCF were as follows: the dosage of Bi (NO_3) __3 was 1.0mmol, the dosage of Na_2WO_4 was 0.5mmol, the temperature was 70 ℃ and the reaction time was 24h. The photocatalytic activities of Bi_2WO_6 / AOCF were investigated with Rhodamine B, Reactive Yellow, Methylene Blue and Methyl Orange as simulated pollutants. The results showed that Bi_2WO_6 / AOCF had good ability of photocatalytic degradation for all four dyes and could be repeated The use of multiple, photocatalytic reaction with first-order reaction kinetics.