【摘 要】
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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.we
【机 构】
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College of Materials and Chemical Engineering,Key Laboratory of Inorganic Nonmetallic Crystalline an
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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.
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