β-FeOOH改性蒙脱土复合过氧化氢对罗丹明B的降解

CHEN Xiudong,ZHANG Yihuan, ZHANG Haodong, SHENG Donghe,WU Jiawei,LIU Jinhang,YAN Ping,ZHAN Changchao

Inorganic Chemicals Industry（2022）

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Abstract

用不同物质的量的β-FeOOH对蒙脱土(MMT)进行改性制备出一系列β-FeOOH-MMT(x),并将其与过氧化氢(H2O2)联用降解罗丹明B(RhB).考察了RhB模拟废水脱色的影响因素,并研究了不同处理方法的协同效应.结果表明:在pH为5.2、β-FeOOH-MMT(3.5)用量为2 g/L、n(H2O2):n(Fe)=50:1条件下搅拌10 min,对20 mg/L的RhB去除率可高达89.3％;对β-FeOOH-MMT(x)进行了拉曼光谱和扫描电镜表征.β-FeOOH-MMT(3.5)表现出丰富的孔结构;β-FeOOH-MMT(3.5)和H2O2对降解RhB模拟废水产生了协同效应,降解反应较为接近表观一级动力学,速率增强因子可达到29.32.

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