摘要
In this study,Mn catalysts have been designed based on manganese oxide octahedral molecular sieve(OMS-2) supports to optimize the catalytic activity in the degradation of organic pollutants.Herein,two different synthetic strategies:Pre-incorporation vs.wet-impregnation have been employed to synthesize[PW]-OMS-2 and [PW]/OMS-2.For [PW]-OMS-2,energy dispersive X-ray spectroscopy(EDX) confirmed that dispersed granular phosphotungstic acid attached and located at the surface of OMS-2,meanwhile some W atoms have been doped into frameworks of OMS-2.However,for [PW]/OMS-2,the W atoms cannot enter the OMS-2 frameworks.A correlation has been established between the different synthetic strategies and catalytic activities.The [PW]-OMS-2 is the most highly effective and stable over than[PW]/OMS-2 and OMS-2 itself for the organic pollutants removal.This may be caused not only by the synergetic effect of [PW] and OMS-2,but also by doping W into frameworks of OMS-2.Therefore,this work provides a new environmentally-friendly and heterogeneous PMS activator and it may be put into practice to degrade organic pollutants.
基金
supported by the National Natural Science Foundation of China (Nos.21805166,21403256 and 21573261)
the 111 Project (No.D20015)
the Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Ministry of Education,China Three Gorges University (No.KF2019-05)
the Outstanding Young and Middle-Aged Science and Technology Innovation Teams,Ministry of Education,Hubei province,China (No.T2020004)
the Youth Innovation Promotion Association CAS (No.2018456)
LICP Cooperation Foundation for Young Scholars (No.HZJJ20-10)。
作者简介
Corresponding author at:Xu Meng,College of Materials and Chemical Engineering,Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials,Analysis and Testing Center,China Three Gorges University,Yichang 443002,China.E-mail addresses:xumeng@licp.cas.cn;Corresponding author:Xiang Liu,xiang.liu@ctgu.edu.cn。
