PMo_(12)/TiO_(2)光催化降解工业DNBP废水的研究  

Photocatalytic Degradation of DNBP Industrial Wastewater Using PMo_(12)/TiO_(2)

作　　者：杨耀彬[1] 韩丹丹[1] 张世龙 YANG Yaobin;HAN Dandan;ZHANG Shilong(School of Chemistry and Pharmaceutical Engineering,Jilin Institute of Chemical Technology,Jilin City 132022,China)

机构地区：[1]吉林化工学院化学与制药工程学院,吉林吉林132022

出　　处：《吉林化工学院学报》2023年第3期1-5,98,共6页Journal of Jilin Institute of Chemical Technology

基　　金：吉林省教育厅科学技术研究项目(JJKH20210228KJ);吉林省大学生创新创业项目(S202210192026);吉林市科技创新发展计划项目(20190104194)。

摘　　要：采用溶胶-凝胶法和水热合成法制备H3PMo12O40(PMo_(12))/TiO_(2)复合光催化剂并应用于工业废水的降解。利用红外光谱仪(IR),X射线衍射仪(XRD),X射线光电子能谱(XPS)和扫描电子显微镜(SEM)进行测定,并在紫外光照射下分析光催化剂对DNBP废水的光催化降解性能。考察了废水的初始pH值、催化剂用量及重复利用率等对DNBP废水降解的影响。结果表明,在光照时间为5 h,pH值为5.10,用量为1.00 g/L的条件下,复合光催化剂较单纯TiO_(2)催化剂的光催化性能有明显提高,降解率达到98.36%,COD去除率达到53.18%,且POM/TiO_(2)复合催化剂回收利用3次仍具有较高活性。The composite photocatalysts phosphomolybdic acid/titanium dioxide(PMo_(12)/TiO_(2))applied for industrial wastewater degradation were prepared by sol-gel method and hydrothermal synthesis method.The composites were characterized by infrared spectrometer(IR),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS)and scanning electron microscopy(SEM).The photocatalytic degradation of 2-buteny-4,6-dinitrophenol(DNBP)was investigated under ultraviolet light irradiation.The effects of the initial pH value,the amount and the reused times of catalyst on degradation of DNBP wastewater were also investigated.The results indicated that the photocatalytic activity of PMo_(12)/TiO_(2)is significantly better than pure TiO_(2)photocatalyst when the illumination time is 5 hours,the pH value is 5.10 and the amount of catalyst is 1.00 g/L.The degradation rate of the composite catalyst is 98.36%,the COD removal rate is 53.18%.After 3 times repeated use,the PMo_(12)/TiO_(2)composite photocatalyst still has high activity.

关 键 词：光催化 DNBP 杂多酸 二氧化钛 COD 

分 类 号：O643[理学—物理化学]