Institute of Chemical Technology, Vietnamese Academy of Science and Technology, 01 Mac Dinh Chi, District 1, Ho Chi Minh, Viet Nam.
J Hazard Mater. 2011 Jan 30;185(2-3):653-61. doi: 10.1016/j.jhazmat.2010.09.068. Epub 2010 Sep 25.
We present a simple and efficient method for the fabrication of magnetic Fe(2)MO(4) (M:Fe and Mn) activated carbons (Fe(2)MO(4)/AC-H, M:Fe and Mn) by impregnating the activated carbon with simultaneous magnetic precursor and carbon modifying agent followed by calcination. The obtained samples were characterized by nitrogen adsorption isotherms, X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM), and the catalytic activity in heterogeneous Fenton oxidation of methyl orange (MO) was evaluated. The resulting Fe(2)MnO(4)/AC-H showed higher catalytic activity in the methyl orange oxidation than Fe(3)O(4)/AC-H. The effect of operational parameters (pH, catalyst loading H(2)O(2) dosage and initial MO concentration) on degradation performance of the oxidation process was investigated. Stability and reusability of selected catalyst were also tested.
我们提出了一种简单高效的方法，通过浸渍同时的磁性前体和碳改性剂，然后煅烧，制备磁性 Fe(2)MO(4)（M：Fe 和 Mn）活性炭（Fe(2)MO(4)/AC-H，M：Fe 和 Mn）。通过氮气吸附等温线、X 射线衍射（XRD）、扫描电子显微镜（SEM）和振动样品磁强计（VSM）对所得样品进行了表征，并评价了其在异相 Fenton 氧化甲基橙（MO）中的催化活性。与 Fe(3)O(4)/AC-H 相比，所得的 Fe(2)MnO(4)/AC-H 在甲基橙氧化中表现出更高的催化活性。考察了操作参数（pH、催化剂用量、H(2)O(2)剂量和初始 MO 浓度）对氧化过程降解性能的影响。还测试了所选催化剂的稳定性和可重复使用性。
