摘要
芬顿催化是污水处理中最常用的技术之一，但是传统芬顿试剂需要对水体进行酸化并造成大量亚铁离子浪费．本文用水合肼还原法制备了四氧化三铁一石墨烯复合芬顿催化剂（Fe3O4-G），测试其催化脱色甲烯蓝的活性．Fe3O4-G样品用透射电镜、x射线光电子能谱和红外光谱等表征．Fe3O4-G能催化双氧水分解氧化脱色甲烯蓝．Fe3O4-G在pH3．5＂-9．5范围内均能有效催化脱色甲烯蓝，最佳pH为8．5．Fe3O4-G的催化活性几乎不受溶剂的影响，加入自由基淬灭剂叔丁醇对脱色也没有明显抑制．Fe304-G在较高的温度下催化能力更强，增大双氧水用量也能促进脱色反应．
Fenton system is among the most frequently applied water treatment technology,but it has several drawbacks, inclu- ding the acidic environment and the waste of Fe2＋. This study prepared Fe3 O4-graphene composite （Fe30g-G） by hydrazine hy- drate reduction, and measured the Fenton-like catalytic activity in the decoloration of methylene blue. Fe3 O4-G was character- ized by transmission electron microscopy, X-ray photoelectron spectroscopy and infrared spectrometer. F3 O4-G could catalyze the decomposition of H2 02 to oxidize MB. F% 04-G could be used in the pH range of 3.5 to 9. 5, which was optimized at 8.5. The catalytic activity was not significantly influenced by the solvent and the radical scavenger tertiary butanol. Higher cata- lytic activity of Fe30a-G was observed under higher temperature and the presence of more H2 02.
出处
《西南民族大学学报（自然科学版）》
CAS
2015年第5期588-592,共5页
Journal of Southwest Minzu University(Natural Science Edition)
基金
四川省科技支撑计划(No.2013FZ0060)
四川省教育厅科研项目重点项目(No.15ZA0392)
关键词
石墨烯
四氧化三铁
芬顿催化剂
水污染
脱色
高级氧化法
graphene
Fe3O4
Fenton catalyst
water pollution
decoloration
advanced oxidation process
