Yolk-shell structured Fe@void@mesoporous silica with high magnetization for activating peroxymonosulfate  

作　　者：Bingqian Xu Wan Jiang Lianjun Wang Binota Thokchom Pengpeng Qiu Wei Luo 

机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China [2]Indian Institute of Technology Guwahati,Guwahati 781039,India

出　　处：《Chinese Chemical Letters》2020年第7期2003-2006,共4页中国化学快报（英文版）

基　　金：the NSF of China(Nos.51822202 and 51772050);Shanghai Rising-Star Program(No.18QA1400100);Youth Top-notch Talent Support Program of Shanghai;Science and Technology Commission of Shanghai Municipality(No.19520713200);Shanghai Scientific and Technological Innovation Project(No.19JC1410400);DHU Distinguished Young Professor Program;Fundamental Research Funds for the Central Universities。

摘　　要：Sulfate radical anion(SO4*)based Fenton-like reaction have recently received a large quantity of attention owing to their strong oxidative capacity and high selectivity toward organic pollutants.However,the development of a high-efficient catalyst for activation of peroxymonosulfate(PMS)with a fast separation is still challengeable.Herein,magnetic mesoporous silica composites with a yolk-shell structure(Fe@void@mSiO2)have been prepared via a successive coating strategy,followed by a hightemperature in-situ treatment and demonstrated as a high-efficient and fast magnetic separable catalyst for the activation of PMS.The resultant material possesses a well-defined yolk-shell structure with high specific surface area(~495.0 m^2/g),uniform pore size(~6.9 nm)and super large magnetic susceptibility(~105 emu/g).Owing to the unique properties,the material possesses an excellent degradation activity for tetracyclines(TC),which is much higher than the commercialized Zero Valent Iron(ZVI)nanoparticles.Additionally,the catalyst is able to work over a broad pH range and be quickly recycled by using an external magnetic field.This research provides a promising strategy for the synthesis and design of multifunctional catalyst for the Fenton-like process.

关 键 词：Yolk-shell Magnetic mesoporous silica Fenton-like process PMS activation TETRACYCLINES 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学]