二氧化锰纳米微球在电Fenton反应中的应用

李昊; 王浩男; 任斐鹏; 彭瑞超

doi:10.13205/j.hjgc.202012005

二氧化锰纳米微球在电Fenton反应中的应用

doi: 10.13205/j.hjgc.202012005

1. 长江水利委员会长江科学院水利部山洪地质灾害防治工程技术研究中心, 武汉 430010;
2. 武汉大学化学与分子科学学院, 武汉 430072

基金项目:

国家重点研发计划（2017YFC050530302，2017YFC0506304）。

详细信息

作者简介:
李昊(1989-),男,博士,主要研究方向为水土保持及水处理技术。

通讯作者:
彭瑞超(1988-),男,博士,主要研究方向为水处理技术。prc@whu.edu.cn

计量
- 文章访问数: 162
- HTML全文浏览量: 15
- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2019-08-28
- 网络出版日期: 2021-04-23

APPLICATION OF MANGANESE DIOXIDE NANOSPHERES IN ELECTRO-FENTON REACTION

1. Changjiang River Scientific Research Institute, Research Center on Mountain Torrent and Geologic Disaster Prevention of MWR, Wuhan 430010, China;
2. College of Chemistry & Molecular Sciences, Wuhan University, Wuhan 430072, China

摘要

摘要: 通过简单的水热法制备了比表面积较高的MnO₂纳米微球，以之替代Fenton试剂中的Fe试剂，采用类电Fenton反应降解染料亚甲基蓝（MB），研究其处理效果。实验结果表明：当MB溶液初始浓度为30 mg/L时，电压为10.6 V，MnO₂浓度为80 mg/L，H₂O₂浓度为20.4 g/L，保持pH为4条件下，MB在40 min内的降解率达到94.08%。分析了反应前后MnO₂的变化并提出其反应机理。该研究成果可为电Fenton技术的应用提供新的思路和理论依据。
- 二氧化锰 /
- 电Fenton /
- 染料 /
- 催化氧化
Abstract: In this work, a nano MnO₂ microsphere with high large specific surface area has been successfully prepared by a facile hydrothermal process. Then it was used to replace Fe²⁺ in Fenton reagent. Methylene blue (MB) was degraded by electro-like Fenton reaction. The experimental results showed that when the initial concentration of methylene blue solution was 30 mg/L, the optimal degradation condition was voltage of 5.3 V, 80 mg/L MnO₂, H₂O₂ solution content of 20.4 g/L, pH of 4. Then the degradation rate of MB reached 94.08% within 40 min.The changes of MnO₂ before and after the reaction were discussed and the reaction mechanism was proposed.This study could provide theoretical basis and guidance for electro-Fenton technology in practical application.
- manganese dioxide /
- electro-Fenton /
- dye degradatuon /
- catalytic oxidation

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参考文献(21)

HAMMAMI S, BELLAKHAL N, OTURAN N, et al. Degradation of acid orange 7 by electrochemically generated·OH radicals in acidic aqueous medium using a boron-doped diamond or platinum anode:a mechanistic study[J]. Chemosphere,2008,73(5):678-684.

江野立,李爱民. 电-Fenton法处理水体中有机污染物的研究现状与进展[J].环境工程,2012,30(增刊2):5-9.

彭瑞超, 于萍, 罗运柏. 电-Fenton装置的优化与焦化废水的深度处理[J]. 环境工程, 2014,32(5):10-13.

陈立群, 张永刚. MnO₂催化Fenton试剂降解苯酚废水[J]. 环境工程学报, 2012,6(11):4047-4052.

ZHOU D N, CHEN L, ZHANG C B, et al. A novel photochemical system of ferrous sulfite complex:kinetics and mechanisms of rapid decolorization of acid orange 7 in aqueous solutions[J]. Water Research, 2014, 57:87-95.

XU Y, LIN H, LI Y K, et al. The mechanism and efficiency of MnO₂ activated persulfate process coupled with electrolysis[J]. Science of the Total Environment, 2017, 609:644-654.

SAPUTRA E, MUHAMMAD S, SUN H Q, et al. Different crystallographic one-dimensional MnO₂ nanomaterials and their superior performance in catalytic phenol degradation[J]. Environmental Science & Technology, 2013, 47(11):5882-5887.

GHAUCH A, MUTHANNA T A, KIBBI N, et al. Methylene blue discoloration by heated persulfate in aqueous solution[J]. Chemical Engineering Journal, 2012,213:259-271.

ZHAO G X,LI J X, REN X M, et al. Highly active MnO₂ nanosheet synthesis from graphene oxide templates and their application in efficient oxidative degradation of methylene blue[J]. RSC Advance, 2013, 31(3):12909-12914.

CHEN X Y, CHEN J W, QIAO X L, et al. Performance of nano-Co₃O₄/peroxymonosulfate system:kinetics and mechanism study using acid orange 7 as a model compound[J]. Applied Catalysis B:Environmental, 2008, 80(1/2):116-121.

刘士姮,汪世龙,孙晓宇,等.酸性橙7降解的微观反应机理及动力学研究[J].光谱学与光谱分析, 2005,25(5):776-779.

CAI C, ZHANG Z Y, ZHANG H. Electro-assisted heterogeneous activation of persulfate by Fe/SBA-15 for the degradation of orange Ⅱ[J]. Journal of Hazardous Materials, 2016, 313(5):209-218.

LIN H, ZHANG H, HOU L W. Degradation of C.I. acid orange 7 in aqueous solution by a novel electro/Fe₃O₄/PDS process[J]. Journal of Hazardous Materials, 2014, 276(15):182-191.

PENG R C, ZHENG Y, GUI L, et al. Template free synthesize mesoporous manganese dioxides for water treatment[J]. Journal of Alloys and Compounds, 2018, 753(15):130-137.

REMUCAL C, GINDERVOGEL M. A critical review of the reactivity of manganese oxides with organic contaminants[J]. Environmental Science Processes & Impacts, 2014, 16(6):1247-1266.

LI F B, LIU C S, LIANG C H, et al. The oxidative degradation of 2-mercaptobenzothiazole at the interface of β-MnO₂ and water[J]. Journal of Hazardous Materials, 2008, 154(1/2/3):1098-1105.

GAO J, HEDMAN C, LIU C, et al. Transformation of sulfamethazine by manganese oxide in aqueous solution[J]. Environmental Science & Technology, 2012, 46(5):2642-2651.

KLAUSEN J, HADERLEIN S, SCHWARZENBACH R. Oxidation of substituted anilines by aqueous MnO₂:effect of co-solutes on initial and quasi-steady-state kinetics[J]. Environmental Science & Technology, 1997, 31(9):2642-2649.

ZHANG H C, CHEN W R, HUANG C H. Kinetic modeling of oxidation of antibacterial agents by manganese oxide[J]. Environmental Science & Technology, 2008, 42(15):5548-5554.

PENG R C, LUO Y B, YU P. Coke plant wastewater posttreatment by fenton and electro-fenton processes[J].Enviromental Engineering Science, 2017,34(2):89-96.

YU P, ZHANG X, WANG D, et al. Shape-controlled synthesis of 3D hierarchical MnO₂ nanostructures for electrochemical supercapacitors[J]. Crystal Growth & Design, 2009, 9(1):528-533.

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