仿酶型Fe_3O_4/焦炭非均相降解P-NP研究  

The Heterogeneous Degradation of P-NP by Biomimetic Fe_3O_4/Coke

作　　者：卢露露 王光华[1] 李文兵[1] 万栋[1] 刘念汝 何俊 LU Lulu WANG Guanghua LI Wenbing WAN Dong LIU Nianru HE Jun(College of Chemical Engineering and Technology, Wuhan University of Science and Technology Wuhan 430081)

机构地区：[1]武汉科技大学化学工程与技术学院,武汉430081 [2]湖北祥云(集团)化工股份有限公司

出　　处：《工业安全与环保》2016年第10期23-25,59,共4页Industrial Safety and Environmental Protection

基　　金：高等学校博士学科点专项科研基金(20114219110 002);湖北省教育厅重点项目(D20131107);煤转化与新型炭材料湖北省重点实验室开放基金(WKDM201107)

摘　　要：采用原位氧化沉淀法制备出仿酶型Fe_3O_4/焦炭,并将其作为非均相类Fenton催化剂用于对硝基苯酚(P-NP)废水的降解;采用扫描电子显微镜(SEM)、X射线衍射(XRD)和红外光谱(FTIR)对样品进行表征。表征结果表明,Fe_3O_4牢固地负载在焦炭上,并有利于Fe_3O_4的分散及粒径的减小。实验结果表明,催化剂降解P-NP的最佳条件为:催化剂投加量1.2 g/L,[H2O2]=30 mmol/L,p H=3.0,温度30℃,P-NP的去除率达到99%。Fe_3O_4/焦炭结构稳定,可再生使用。The biomimetic Fe_3O_4/ coke composite catalyst is successfully prepared by in- situ oxidation- precipitation method and used as a heterogeneous Fenton- like catalyst in degradation of p- nitrophenol. The catalyst is characterized by SEM,XRD and FTIR. The characterization results indicate that the Fe_3O_4 nanoparticles exist on the surface of coke steadily,with better dispersing and less partical size. The best degradation conditions of Fe_3O_4/ coke on P- NP are as follows： [catalysts]= 1. 2 g / L,[H2O2]= 30 mmol/L,p H = 3. 0 and T = 30 ℃ and in these conditions the removal rate of P- NP can reach 99%. Fe_3O_4/ coke is a catalyst showing good stability and reusability.

关 键 词：仿酶Fe3O4/焦炭 非均相法 对硝基苯酚 

分 类 号：X703[环境科学与工程—环境工程]