Efficient performance of porous Fe2O3 in heterogeneous activation of peroxymonosulfate for decolorization of Rhodamine B
Efficient performance of porous Fe2O3 in heterogeneous activation of peroxymonosulfate for decolorization of Rhodamine B
复制标题
多孔 Fe2O3 在过一硫酸盐非均相活化中的高效性能用于罗丹明 B 脱色
DOI：
10.1016/j.cej.2013.07.053
复制
发表时间：
2013-09-01
影响因子：
15.1
通讯作者：
Yu, Jie
中科院分区：
文献类型：
--
作者：
Ji, Fei;Li, Chaolin;Yu, Jie
通过水热钙化方法合成多孔Fe2O3颗粒，然后用于激活若丹明B（RHB）脱色的过氧化物硫酸盐（PMS）。使用几种分析方法，例如X射线粉末衍射（XRD），扫描电子显微镜（SEM）和N-2物理吸附来确定催化剂颗粒的特征。实验的结果表明，在PMS存在下，催化剂显示RHB脱色的活性很高。研究了几个关键参数，包括初始pH，催化剂量，PMS浓度和温度，以了解它们对脱色效率的影响。此外，催化剂在三个回收后显示出良好的可重复性和稳定性。最后，通过自由基淬灭研究对参加该过程的自由基进行了分类，并根据了解催化过程的结果提出了合理机制。 （c）2013 Elsevier B.V.保留所有权利。
Porous Fe2O3 particle was synthesized by the hydrothermal-calcination method and then used to activate peroxymonosulfate (PMS) for Rhodamine B (RhB) decolorization. Several analytical means such as X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and N-2 physisorption were used to determine the characteristics of the catalyst particles. The results of experiments indicated that the catalyst showed a high activity in decolorization of RhB in the presence of PMS. Several key parameters including initial pH, amounts of catalyst, PMS concentration, and temperature were investigated in order to understand their effect on the decolorization efficiency. Furthermore, the catalyst showed good reusability and stability after three recycles. Finally, the free radicals participating in the process were classified by radical quenching studies, and a rational mechanism was proposed based on the results obtained to understand the catalytic process. (C) 2013 Elsevier B.V. All rights reserved.