Solid-state preparation of mesoporous Ce-Mn-Co ternary mixed oxide nanoparticles for catalytic degradation of methylene blue

作     者：Qingwen Wang Wenyong Deng Xinchen Lin Xigen Huang Ling Wei Lei Gong Changxiang Liu Guangbin Liu Qian Liu Qingwen Wang;Wenyong Deng;Xinchen Lin;Xigen Huang;Ling Wei;Lei Gong;Changxiang Liu;Guangbin Liu;Qian Liu

作者机构：Key Laboratory of Chemical Utilization of Plant Resources of NanchangCollege of ScienceJiangxi Agricultural UniversityNanchang 330045China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2021年第39卷第7期

页      面：826-834,I0003页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(21403093,21563014) the Foundation of Jiangxi Educational Committee(GJJ170278,GJJ190241) Jiangxi Province Key Research and Development Project(20192BBEL50029) 

主　　题：Ce-Mn-Co mixed Oxide Methylene blue Advanced oxidation processes Soft reactive grinding Rare earths 

摘      要：Mesoporous Ce-Mn-Co ternary metal oxide was fabricated via an efficient oxalate-precursor-based soft reactive grinding route and used to activate H_(2)O_(2) for advanced oxidation of methylene blue in *** addition,Mn-Co binary oxide and pure Co_(3)O_(4) and Mn_(3)O_(4) were also synthesized as reference *** catalysts were characterized by X-ray diffraction,N_(2) adsorption-desorption,H_(2)-temperature programmed reduction,transmission electron microscopy,scanning electron microscopy and X-ray photoelectron *** results demonstrate that part of the Ce and Mn can be incorporated into the lattice of Co_(3)O_(4) and cause severe lattice distortion of the unit *** with the single or binary system,Ce-Mn-Co ternary metal oxide exhibits the best activity in methylene blue removal and nearly 100% decomposition rate and 84% COD removal rate can be achieved in 12 h,and with degradation rate of 93.5% after three *** results are primarily attributed to the synergistic effect of Ce,Mn and Co,which can promote the formation of more lattice defects,higher specific surface area and smaller particle *** tests show that hydroxyl radicals(·OH) play more dominant role than superoxide radicals(·O_(2)^(-)).Kinetic studies were studied and the activation energies of all the catalysts were calculated.