N掺杂二氧化钛光催化降解甲基橙染料废水的试验研究  

Experimental Study on Photocatalytic Degradation of Methyl OrangeDye Wastewater by Using N-Doped Titanium Dioxide

作　　者：沈宇翔 SHEN Yuxiang(School of Resources,Environment and Materials,Guangxi University,Nanning 530000,China)

机构地区：[1]广西大学资源环境与材料学院,南宁530000

出　　处：《中国资源综合利用》2024年第4期27-29,共3页China Resources Comprehensive Utilization

摘　　要：试验以尿素为氮源,采用溶胶-凝胶法合成N掺杂二氧化钛(N-TiO_(2)),使用X射线衍射仪和X射线光电子能谱仪对其结构进行表征,然后探索N-TiO_(2)光催化降解甲基橙染料废水的最佳工艺条件。结果显示,最佳工艺条件下,反应体系pH为8,催化剂添加量为7 g/L,甲基橙初始浓度为10 mg/L,催化剂循环使用次数小于4次,甲基橙降解率可达98%,N-TiO_(2)具有优异的光催化活性和稳定性。Using urea as nitrogen source,N-doped titanium dioxide(N-TiO_(2))is synthesized by sol-gel method,and its structure is characterized by X-ray diffraction and X-ray photoelectron spectroscopy,and then the optimal process conditions for N-TiO_(2) photocatalytic degradation of methyl orange dye wastewater are explored in the experiment.The results show that under the optimal process conditions,the pH of the reaction system is 8,the amount of catalyst added is 7 g/L,the initial concentration of methyl orange is 10 mg/L,the number of catalyst cycles is less than 4,and the degradation rate of methyl orange can reach 98%,and the N-TiO_(2) has excellent photocatalytic activity and stability.

关 键 词：N掺杂 光催化 二氧化钛 溶胶-凝胶法 甲基橙 染料废水 

分 类 号：X791[环境科学与工程—环境工程]