文献类型：期刊文献

中文题名：Efficient Fe（Ⅲ）/Fe（Ⅱ） cycling triggered by MoO2 in Fenton reaction for the degradation of dye molecules and the reduction of Cr（Ⅵ）

英文题名：Efficient Fe（Ⅲ）/Fe（Ⅱ） cycling triggered by MoO2 in Fenton reaction for the degradation of dye molecules and the reduction of Cr（Ⅵ）

作者：Bin Shen[1];Chencheng Dong[1];Jiahui Ji[1];Mingyang Xing[1];Jinlong Zhang[1]

机构：[1]Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology

年份：2019

卷号：30

期号：12

起止页码：2205

中文期刊名：Chinese Chemical Letters

外文期刊名：中国化学快报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；

基金：supported by the State Key Research Development Program of China (No.2016YFA0204200);National Natural Science Foundation of China (Nos.21822603,21811540394,5171101651,21677048,21773062,21577036);Shanghai Pujiang Program (No.17PJD011);the Fundamental Research Funds for the Central Universities (No.22A201514021);Project supported by Shanghai Municipal Science and Technology Major Project (No. 2018SHZDZX03);the Program of Introducing Talents of Discipline to Universities (No.B16017)

语种：英文

中文关键词：Fenton reaction;Co-catalytic;Molybdenum dioxide;Fe^3+/Fe^2+conversion;Dye wastewater

外文关键词：Fenton reaction;Co-catalytic;Molybdenum dioxide;Fe3+/Fe2+conversion;Dye wastewater

摘要：There is a relatively low efficiency of Fe(Ⅲ)/Fe(Ⅱ) conversion cycle and H2 O2 decomposition(<30%) in conventional Fenton process,which further results in a low production efficiency of ·OH and seriously restricts the application of Fenton.Herein,we report that the commercial MoO2 can be used as the cocatalyst in Fenton process to dramatically accelerate the oxidation of Lissamine rhodamine B(L-RhB),where the efficiency of Fe(Ⅲ)/Fe(Ⅱ) cycling is greatly enhanced in the Fenton reaction meanwhile.And the L-RhB solution could be degraded nearly 100% in 1 min in the MoO2 cocatalytic Fenton system under the optimal reaction condition,which is apparently better than that of the conventional Fenton system(~50%).Different from the conventional Fenton reaction where the ’OH plays an important role in the oxidation process,it shows that 1 O2 contributes most in the MoO2 cocatalytic Fenton reaction.However,it is found that the exposed Mo^4+ active sites on the surface of MoO2 powders can greatly promote the rate-limiting step of Fe^3+/Fe^2+ cycle conversion,thus minimizing the dosage of H2 O2(0.400 mmol/L) and Fe^2+(0.105 mmol/L).Interestingly,the MoO2 cocatalytic Fenton system also exhibits a good ability for reducing Cr(Ⅵ) ions,where the reduction ability for Cr(Ⅵ) reaches almost 100% within 2 h.In short,this work shows a new discovery for M002 cocatalytic advanced oxidation processes(AOPs),which devotes a lot to the practical water remediation application.
There is a relatively low efficiency of Fe（Ⅲ）/Fe（Ⅱ） conversion cycle and H2 O2 decomposition（<30%） in conventional Fenton process,which further results in a low production efficiency of ·OH and seriously restricts the application of Fenton.Herein,we report that the commercial MoO2 can be used as the cocatalyst in Fenton process to dramatically accelerate the oxidation of Lissamine rhodamine B（L-RhB）,where the efficiency of Fe（Ⅲ）/Fe（Ⅱ） cycling is greatly enhanced in the Fenton reaction meanwhile.And the L-RhB solution could be degraded nearly 100% in 1 min in the MoO2 cocatalytic Fenton system under the optimal reaction condition,which is apparently better than that of the conventional Fenton system（～50%）.Different from the conventional Fenton reaction where the ’OH plays an important role in the oxidation process,it shows that 1 O2 contributes most in the MoO2 cocatalytic Fenton reaction.However,it is found that the exposed Mo4+ active sites on the surface of MoO2 powders can greatly promote the rate-limiting step of Fe3+/Fe2+ cycle conversion,thus minimizing the dosage of H2 O2（0.400 mmol/L） and Fe2+（0.105 mmol/L）.Interestingly,the MoO2 cocatalytic Fenton system also exhibits a good ability for reducing Cr（Ⅵ） ions,where the reduction ability for Cr（Ⅵ） reaches almost 100% within 2 h.In short,this work shows a new discovery for M002 cocatalytic advanced oxidation processes（AOPs）,which devotes a lot to the practical water remediation application.