One-pot hydrothermal synthesis of hierarchical porous manganese silicate microspheres as excellent Fenton-like catalysts for organic dyes degradation

作     者：Yuyu Zheng Lihua Wang Liyun Zhang Heng Zhang Wancheng Zhu Yuyu Zheng;Lihua Wang;Liyun Zhang;Heng Zhang;Wancheng Zhu

作者机构：Department of Chemical EngineeringQufu Normal UniversityQufu 273165China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第4期

页      面：2977-2986页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学] 

基　　金：This work was supported by the State Key Laboratory of Chemical Engineering(No.SKL-ChE-21A02) State Key Laboratory of Organic-Inorganic Composites(No.oic-202101009) China.The authors also wanna thank Dr.Junfeng Chen and Prof.Renjun Wang at School of Life Science(Qufu Normal University)。 

主　　题：hierarchical porous manganese silicate microspheres Fenton-like catalysts degradation organic dyes 

摘      要：Towards bottlenecks demonstrated by typical Fenton-like catalysts in advanced oxidation processes(AOPs)for wastewater treatment,novel hierarchical porousMn^(2+)Mn_(6)^(3+)SiO_(12)(Mn_(7)SiO_(12),MSO-12)microspheres(specific surface area:434.90 m^(2)·g^(-1),pore volume:0.78 cm^(3)·g^(-1))were rationally designed and achieved via a simple one-pot hydrothermal method(150℃ and 12.0 h)without any pre-prepared templates or organic solvents,by using abundant MnCl_(2)·4H_(2)O and Na_(2)SiO_(3)·9H_(2)O as the basic raw materials.The MSO-12 microspheres are confirmed as high-efficiency Fenton-like catalysts for degradation of organic dyes(methylene blue(MeB),Rhodamine B(RhB),and methyl blue(MB))in the presence of H_(2)O_(2),with impressively high specific consumption amount of MeB(R=12.35 mg·g^(-1)·min^(-1))and extremely low leaching of Mn(Mnloss%=0.27%).Simultaneously,the synergetic effect of adsorption and degradation on the superior removal of MeB is uncovered.The excellent recycling performances,especially the satisfactory removal of MeB from the actual water bodies(e.g.,tap water and river water),as well as potential applications for degradation of RhB and MB enable the MSO-12 microspheres as a novel promising competitive candidate Fenton-like catalyst.