微波诱导催化降解水中孔雀石绿研究

南京大学学报(自然科学版) ›› 2017, Vol. 53 ›› Issue (2): 294–.

微波诱导催化降解水中孔雀石绿研究

杨绍贵*，孟令君，李东方，何　欢，孙　成

出版日期:2017-03-26 发布日期:2017-03-26
作者简介:污染控制与资源化研究国家重点实验室，南京大学环境学院，南京，210023
基金资助:
基金项目：国家自然科学基金(51278242)，江苏省产学研前瞻性联合研究项目(BY2016116)收稿日期：2016－11－21*通讯联系人，E-mail：yangdlut@126.com，yangsg@nju.edu.cn

Microwave induced catalytic degradation of malachite green in water

Yang Shaogui*，Meng Lingjun，Li Dongfang，He Huan，Sun Cheng

Online:2017-03-26 Published:2017-03-26
About author:State Key Laboratory of Pollution Control and Resources Reuse，School of the Environment，Nanjing University，Nanjing，210023，China

摘要/Abstract

摘要： 以纳米级铁酸锌(ZnFe2O4)粉体为微波诱导催化剂，构建了微波－ZnFe2O4催化反应体系．微波－ZnFe2O4反应体系下孔雀石绿(MG)的降解结果表明：20 mg·L－1的目标化合物在2 min内基本上被完全去除．利用LC/MS与GC/MS鉴定了孔雀石绿的主要降解产物，并推断其降解途径：逐步脱甲基、共轭生色团的破坏、开环和矿化．对比研究了添加H2O2进入微波－ZnFe2O4催化反应体系前后降解产物的变化，结果表明：H2O2等的加入能大幅提高孔雀石绿降解效率，有助于共轭生色团的破坏，这归因于H2O2与催化剂之间发生了Fenton反应．研究为三苯甲烷染料类废水处理提供了新的有效方法．

Abstract: Microwave induced catalytic degradation of malachite green(MG)was investigated in this study，where Nano?sized zinc ferrite powder synthesized via coprecipitation process was used as a microwave induced catalyst.The phase structure and size of the catalyst were characterized by XRD and TEM.The results indicated that the catalyst was a pure ZnFe2O4 and its grain was spherical；and grain size rose with the calcination temperature.The degradation results showed that the target compounds of 20 mg·L－1 were completely removed in 2 minutes.Main intermediate products were identified by LC/MS and GC/MS.the possible degradation mechanisms contains four processes：N?demethylation，chromophore cleavage，ring opening and mineralization.Comparison on the differences of intermediates products before and after H2O2 addition，indicated its possible degradation mechanisms were different.Chromophore cleavage process played a more important role in the presence of H2O2.Microwave induced catalysis could be recommended as a promising method for wastewater treatment.

杨绍贵*，孟令君，李东方，何　欢，孙　成. 微波诱导催化降解水中孔雀石绿研究[J]. 南京大学学报(自然科学版), 2017, 53(2): 294–.

Yang Shaogui*，Meng Lingjun，Li Dongfang，He Huan，Sun Cheng. Microwave induced catalytic degradation of malachite green in water[J]. Journal of Nanjing University(Natural Sciences), 2017, 53(2): 294–.

参考文献

[1]　Sirés I，Guivarch E，Oturan N，et al.Efficient removal of triphenylmethane dyes from aqueous medium by in situ electrogenerated Fenton’s reagent at carbon?felt cathode.Chemosphere，2008，72(4)：592－600.[2] Gao G，Zhang A，Zhang M，et al.Photocatalytic degradation mechanism of malachite green under visible light irradiation over novel biomimetic photocatalyst HMS?FePcs.Chinese Journal of Catalysis，2008，29(5)：426－430.[3] Hameed B H，Lee T W，Degradation of malachite green in aqueous solution by Fenton process.Journal of Hazardous Materials，2009，164(2)：468－472.[4] Pérez?Estrada L A，Agüera A，Hernando M D，et al.Photodegradation of malachite green under natural sunlight irradiation：Kinetic and toxicity of the transformation products.Chemosphere，2008，70(11)：2068－2075.[5] 荣江秀，石迎霞，柳海波等．微波诱导催化技术在水污染治理中的应用．工业安全与环保，2009，35(1)：19－21.(Rong J X，Shi Y X，Liu H B，et al.Application of microwave induced catalytic technology in water pollution treatment.Industrial Safety and Environmental Protection，2009，35(1)：19－21)．[6] Fang X，Xiao J，Yang S G，et al.Investigation on microwave absorbing properties of loaded MnFe2O4 and degradation of Reactive Brilliant Red X?3B.Applied Catalysis B?Environmental，2015，162：544－550.[7] Xiao J，Fang X，Yang S G，et al.Microwave?assisted heterogeneous catalytic oxidation of high?concentration Reactive yellow 3 with CuFe2O4/PA.Journal of Chemical Technology & Biotechnology，2015，90(10)：1861－1868.[8] Gao J，Yang S G，Li N，et al.Rapid degradation of azo dye Direct Black BN by magnetic MgFe2O4?SiC under microwave radiation.Applied Surface Science，2016，379：140－149.[9] Chen H Z，Yang S G，Chang J，et al.Efficient degradation of crystal violet in magnetic CuFe2O4 aqueous solution coupled with microwave radiation.Chemosphere，2012，89(2)：185－189.[10] 叶　琳，段月琴，袁志好等，共沉淀法制备的铁酸锌纳米材料的晶化与晶粒生长行为．天津理工大学学报，2007，23(6)：36－38.(Ye L，Duan Y Q，Yuan Z H．et al.Preparation of nanosized zinc ferrite by coprecipitation and crystallization behavior.Journal of Tianjin University of Technology，2007，23(6)：36－38.)[11] Atif M，Hasanain S K，Nadeem M．Magnetization of sol?gel prepared zinc ferrite nanoparticles：Effects of inversion and particle size.Solid State Communications，2006，138(8)：416－421.[12] Dong L，Han Z，Zhang Y．Preparation and sinterability of Mn?Zn ferrite powders by sol?gel method.Journal of Rare Earths，2006，24(1)：54－56.[13] Roy M K，Verma H C．Magnetization anomalies of nanosize zinc ferrite particles prepared using electrodeposition.Journal of Magnetism & Magnetic Materials，2006，306(306)：98－102.[14] Bid S，Pradhan S K．Preparation of zinc ferrite by high?energy ball?milling and microstructure characterization by Rietveld’s analysis.Materials Chemistry & Physics，2003，82(1)：27－37.[15] Valenzuela M A，Bosch P，Jiménez?Becerrill J，et al.Preparation，characterization and photocatalytic activity of ZnO，Fe2O3 and ZnFe2O4.Journal of Photochemistry and Photobiology A，2002，148(1)：177－182.[16] Srinivasan S S，Wade J，Stefanakos E K．Synthesis and characterization of photocatalytic TiO2?ZnFe2O4 nanoparticles.Journal of Nanoma?terials，2006，2006(1)：1－4.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed