Fe(Ⅲ)-Asp-SiW_(12)O_(40)复合物异相催化光-Fenton反应降解偶氮类染料  

Degradation of Azo Dyes by Heterogeneous Photo-Fenton Catalyzed by Fe(Ⅲ)-Asp-SiW_(12)O_(40)

作　　者：李楠[1] 柳傲雪 周瑞[1] 程建文[1] 屯妮萨 Li Nan;Liu Aoxue;Zhou Rui;Cheng Jianwen;Tun Nisa(Department of Chemistry&Applied Chemistry,Changji University,Changji 831100,China)

机构地区：[1]昌吉学院化学与应用化学系,新疆昌吉831100

出　　处：《山东化工》2021年第19期283-285,287,共4页Shandong Chemical Industry

基　　金：昌吉学院硕士研究生启动基金(2015SSQD006);昌吉学院教学研究项目(15jyyb012)。

摘　　要：以氯化铁、天冬氨酸、硅钨酸为主要原料,采用溶液沉淀法制备了Fe(Ⅲ)-Asp-SiW_(12)O_(40)复合物,使用红外光谱(IR)、X射线衍射(XRD)对该复合物进行了结构表征,并以偶氮类染料为目标污染物,考察了其光-Fenton反应降解效果。研究表明:复合物为无定形态,多酸阴离子保持了Keggin骨架结构,且该复合物催化剂对甲基橙溶液具有较好的降解活性。最佳光催化降解甲基橙条件为100 mL 50 mg·L^(-1)甲基橙溶液中加入0.40 mL 30%H_(2)O_(2),0.0800 g复合物,450 W高压汞灯照射40 min,甲基橙降解率可达到98%。Fe(Ⅲ)-Asp-SiW_(12)O_(40)composite was prepared with ferric chloride,aspartic acid and silicotungstic acid as main raw materials.The structure of the complex was characterized by infrared spectroscopy(IR)and X-ray diffraction(XRD).The degradation effect of azo dyes as the target pollutants was investigated by photo-Fenton reaction.The results showed that the complex is amorphous and the polyacid anions maintain the Keggin skeleton structure.The complex catalyst has a good degradation activity for methyl orange solution.The optimal photocatalytic degradation conditions of methyl orange were as follows:adding 0.40 mL 30%H_(2)O_(2)and 0.0800 g compound into 100 mL 50 mg·L^(-1)methyl orange solution,irradiation with 450 W high-pressure mercury lamp for 40 minutes,and the degradation rate of methyl orange could reach 98%.

关 键 词：异相光催化 偶氮类染料 降解 废水处理 

分 类 号：TQ426.8[化学工程] X788[环境科学与工程—环境工程]