{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T19:41:56Z","timestamp":1773603716141,"version":"3.50.1"},"reference-count":54,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2018,11,7]],"date-time":"2018-11-07T00:00:00Z","timestamp":1541548800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Nano zero-valent iron has drawn great attention for the degradation of organic dyes due to its high reactivity, large specific surface area, lightweight, and magnetism. However, the aggregation and passivation of iron nanoparticles may prohibit the wide use of it. A new composite material was prepared by loading nano zero-valent iron (nZVI) on montmorillonite (MMT) to overcome the above shortcomings and it was further used for the removal of Rhodamine 6G (Rh 6G) under microwave treatment in the present work. The effects of various parameters, including the initial concentration of Rh 6G, microwave power, and pH value were investigated. The new composite material (nZVI\/MMT) showed an excellent degradation ability for removing Rh 6G, and the removal amount reached 500 mg\/g within 15 min. The degradation rate reached 0.4365 min\u22121, significantly higher than most previous reports using other removal methods for Rh 6G.<\/jats:p>","DOI":"10.3390\/ma11112212","type":"journal-article","created":{"date-parts":[[2018,11,9]],"date-time":"2018-11-09T03:08:02Z","timestamp":1541732882000},"page":"2212","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Effective Degradation of Rh 6G Using Montmorillonite-Supported Nano Zero-Valent Iron under Microwave Treatment"],"prefix":"10.3390","volume":"11","author":[{"given":"Wenxiu","family":"Rao","sequence":"first","affiliation":[{"name":"Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hao","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Science, China University of Geosciences, Beijing 100083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guocheng","family":"Lv","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Danyu","family":"Wang","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Libing","family":"Liao","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,11,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1016\/S0960-8524(00)00080-8","article-title":"Remediation of dyes in textile effluent: A critical review on current treatment technologies with a proposed alternative","volume":"77","author":"Robinson","year":"2001","journal-title":"Bioresour. Technol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1781","DOI":"10.1016\/j.catcom.2009.06.004","article-title":"Photocatalytic degradation of methylene blue by ZnGa2O4 thin films","volume":"10","author":"Zhang","year":"2009","journal-title":"Catal. Commun."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"238","DOI":"10.1016\/j.cej.2012.12.046","article-title":"Multi-walled carbon nanotubes as sorbent for recovery of endocrine disrupting compound-bisphenol F from wastewater","volume":"218","author":"Zhang","year":"2013","journal-title":"Chem. Eng. J."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1501","DOI":"10.1016\/j.biortech.2006.05.037","article-title":"Performance of combined process of anoxic baffled reactor-biological contact oxidation treating printing and dyeing wastewater","volume":"98","author":"Wu","year":"2007","journal-title":"Bioresour. Technol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1016\/S0143-7208(03)00064-0","article-title":"The removal of colour from textile wastewater using whole bacterial cells: A review","volume":"58","author":"Pearce","year":"2003","journal-title":"Dyes. Pigm."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"203","DOI":"10.1016\/j.jhazmat.2005.11.096","article-title":"Oxidation of various reactive dyes with in situ electro-generated active chlorine for textile dyeing industry wastewater treatment","volume":"136","author":"Rajkumar","year":"2006","journal-title":"J. Hazard. Mater."},{"key":"ref_7","first-page":"227","article-title":"Advances in the treatment of printing and dyeing wastewater by physical and chemical processes","volume":"72","author":"Wang","year":"2010","journal-title":"Ind. Water Treat."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"2381","DOI":"10.2175\/106143009X426059","article-title":"A rapid determination method of chemical oxygen demand in printing and dyeing wastewater using ultraviolet spectroscopy","volume":"81","author":"Kong","year":"2009","journal-title":"Water Environ. Res."},{"key":"ref_9","first-page":"1937","article-title":"Study on Cleaning Methods of Membrane in Printing and Dyeing Wastewater by MBR","volume":"781\u2013784","author":"Zhu","year":"2013","journal-title":"Adv. Mater. Res."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"103","DOI":"10.1016\/j.clay.2016.11.016","article-title":"A novel strategy for preparation of an effective and stable heterogeneous photo-Fenton catalyst for the degradation of dye","volume":"136","author":"Chen","year":"2017","journal-title":"Appl. Clay Sci."},{"key":"ref_11","first-page":"270532","article-title":"Removal of Organic Matter from Landfill Leachate by Advanced Oxidation Processes: A Review","volume":"2010","author":"Li","year":"2010","journal-title":"Int. J. Eng. Res."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"178","DOI":"10.1016\/0021-9517(90)90269-P","article-title":"Photocatalytic degradation of organic water contaminants: Mechanisms involving hydroxyl radical attack","volume":"122","author":"Turchi","year":"1990","journal-title":"J. Catal."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1296","DOI":"10.1002\/adma.201204196","article-title":"Lightweight and flexible graphene foam composites for high-performance electromagnetic interference shielding","volume":"25","author":"Chen","year":"2013","journal-title":"Adv. Mater."},{"key":"ref_14","first-page":"515","article-title":"Photo-Fenton and Fenton Oxidation of Recalcitrant Industrial Wastewater Using Nanoscale Zero-Valent Iron","volume":"2012","author":"Hansson","year":"2012","journal-title":"Int. J. Photog."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"586","DOI":"10.1016\/j.cej.2012.11.003","article-title":"Microwave enhanced Fenton process for the removal of methylene blue from aqueous solution","volume":"215\u2013216","author":"Liu","year":"2013","journal-title":"Chem. Eng. J."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1089\/ees.2012.0001","article-title":"Competitive Removal of Two Contaminants in a Goethite-Catalyzed Fenton Process at Neutral pH","volume":"30","author":"Yeh","year":"2013","journal-title":"Environ. Eng. Sci."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"294","DOI":"10.1089\/ees.2012.0025","article-title":"Degradation of 4-Chloro-3,5-Dimethylphenol by a Heterogeneous Fenton-Like Reaction Using Nanoscale Zero-Valent Iron Catalysts","volume":"30","author":"Xu","year":"2013","journal-title":"Environ. Eng. Sci."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"130","DOI":"10.1016\/j.seppur.2018.03.048","article-title":"Nanoscale zero-valent iron\/biochar composite as an activator for Fenton-like removal of sulfamethazine","volume":"202","author":"Deng","year":"2018","journal-title":"Sep. Purif. Technol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"2564","DOI":"10.1021\/es9911420","article-title":"Remediation of Cr(VI) and Pb(II) Aqueous Solutions Using Supported, Nanoscale Zero-valent Iron","volume":"34","author":"Ponder","year":"2000","journal-title":"Environ. Sci. Technol."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"947","DOI":"10.1016\/j.jtice.2013.09.006","article-title":"Monitoring of ORP, pH and DO in heterogeneous Fenton oxidation using nZVI as a catalyst for the treatment of azo-dye textile wastewater","volume":"45","author":"Yu","year":"2014","journal-title":"J. Taiwan Inst. Chem. Eng."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"739","DOI":"10.1016\/j.cej.2015.12.070","article-title":"Remediation of arsenic(III) from aqueous solutions using improved nanoscale zero-valent iron on pumice","volume":"288","author":"Liu","year":"2016","journal-title":"Chem. Eng. J."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"4050","DOI":"10.1016\/j.watres.2013.01.054","article-title":"Rapid magnetic removal of aqueous heavy metals and their relevant mechanisms using nanoscale zero valent iron (nZVI) particles","volume":"47","author":"Huang","year":"2013","journal-title":"Water Res."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"91025","DOI":"10.1039\/C6RA16657A","article-title":"Carriers for nano zerovalent iron (nZVI): Synthesis, application and efficiency","volume":"6","author":"Aduseigyamfi","year":"2016","journal-title":"RSC Adv."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"82","DOI":"10.1166\/jbns.2011.1039","article-title":"Remediation of \u03b3-Hexachlorocyclohexane contaminated soil using nanoscale zero-valent iron","volume":"5","author":"Singh","year":"2011","journal-title":"Bionanoscience"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1016\/j.cej.2014.03.108","article-title":"Influence of operating temperature on the reduction of high concentration p-nitrophenol (PNP) by zero valent iron (ZVI)","volume":"249","author":"Lai","year":"2014","journal-title":"Chem. Eng. J."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1016\/j.chemosphere.2013.02.039","article-title":"Effects of nano-sized zero-valent iron (nZVI) on DDT degradation in soil and its toxicity to collembola and ostracods","volume":"92","author":"Joner","year":"2013","journal-title":"Chemosphere"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1038","DOI":"10.1016\/j.jhazmat.2009.11.145","article-title":"Degradation of trichloroethylene (TCE) by nanoscale zero-valent iron (nZVI) immobilized in alginate bead","volume":"176","author":"Hojeong","year":"2010","journal-title":"J. Hazard. Mater."},{"key":"ref_28","first-page":"223","article-title":"Removal of tetracycline from aqueous solutions using nanoscale zero valent iron and functional pumice modified nanoscale zero valent iron","volume":"25","author":"Guler","year":"2017","journal-title":"J. Environ. Eng."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"412","DOI":"10.1016\/j.cej.2013.06.031","article-title":"The dispersity-dependent interaction between montmorillonite supported nZVI and Cr(VI) in aqueous solution","volume":"229","author":"Zhang","year":"2013","journal-title":"Chem. Eng. J."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"4258","DOI":"10.1021\/es903801r","article-title":"Synthesis of Highly Reactive Subnano-Sized Zero-Valent Iron Using Smectite Clay Templates","volume":"44","author":"Gu","year":"2015","journal-title":"Environ. Sci. Technol."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"213","DOI":"10.1016\/j.colsurfa.2011.06.013","article-title":"Mechanism of chlorpheniramine adsorption on Ca-montmorillonite","volume":"385","author":"Li","year":"2011","journal-title":"Colloids Surf. A Physicochem. Eng. Asp."},{"key":"ref_32","first-page":"157","article-title":"IR Spectroscopic Study on Host-Guest Interaction of Montmorillonite with Benzothiazolium Compounds","volume":"46","author":"Putyera","year":"1992","journal-title":"Chem. Pap."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1006\/jcis.2002.8410","article-title":"Adsorption Characteristics and the Kinetics of the Cation Exchange of Rhodamine-6G with Na+-Montmorillonite","volume":"251","author":"Gemeay","year":"2002","journal-title":"J. Colloid Interface Sci."},{"key":"ref_34","unstructured":"Lin, J.J., Yang, C.Y., Chou, C.C., Su, H.L., and Hung, T.J. (2007). Stably-Dispersing Composite of Metal Nanoparticle and Inorganic Clay and Method for Producing the Same. US Application. (US20090148484A1)."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"415","DOI":"10.1016\/j.apsusc.2016.06.023","article-title":"Fabrication of AgFeO2\/g-C3N4 nanocatalyst with enhanced and stable photocatalytic performance","volume":"391","author":"Tang","year":"2017","journal-title":"Appl. Surf. Sci."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"19482","DOI":"10.1039\/C5RA26509F","article-title":"Sulfur-mediated synthesis of N-doped carbon supported cobalt catalysts derived from cobalt porphyrin for ethylbenzene oxidation","volume":"6","author":"Fu","year":"2016","journal-title":"RSC Adv."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"4665","DOI":"10.1016\/j.watres.2008.08.007","article-title":"Decolorization of dark brown colored coffee effluent by solar photo-Fenton reaction: Effect of solar light dose on decolorization kinetics","volume":"42","author":"Tokumura","year":"2008","journal-title":"Water Res."},{"key":"ref_38","doi-asserted-by":"crossref","unstructured":"Qiu, S., Xu, S., Li, G., and Yang, J. (2016). Synergetic Effect of Ultrasound, the Heterogeneous Fenton Reaction and Photocatalysis by TiO2 Loaded on Nickel Foam on the Degradation of Pollutants. Materials, 9.","DOI":"10.3390\/ma9060457"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1443","DOI":"10.4028\/www.scientific.net\/AMR.393-395.1443","article-title":"Study on Coupled Oxidation and Microwave Process in Treating Urban Landfill Leachate by Fenton and Fenton-like Reaction","volume":"393\u2013395","author":"Jiang","year":"2011","journal-title":"Adv. Mater. Res."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"207","DOI":"10.1016\/S0920-5861(02)00030-5","article-title":"Oxidative coupling of methane with microwave and RF plasma catalytic reaction over transitional metals loaded on ZSM-5","volume":"74","author":"Cho","year":"2002","journal-title":"Catal. Today"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"373","DOI":"10.1002\/adma.19930050509","article-title":"Microwave absorbing materials based on conducting polymers","volume":"5","author":"Olmedo","year":"1993","journal-title":"Adv. Mater."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"528","DOI":"10.1039\/C5MH00113G","article-title":"Searching Beyond Gd for Magnetocaloric Frameworks: Magnetic Properties and Interactions of the Ln(HCO2)3 Series","volume":"2","author":"Saines","year":"2015","journal-title":"Mater. Horiz."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"226","DOI":"10.1016\/j.jhazmat.2016.02.049","article-title":"Microwave-induced carbon nanotubes catalytic degradation of organic pollutants in aqueous solution","volume":"310","author":"Chen","year":"2016","journal-title":"J. Hazard. Mater."},{"key":"ref_44","first-page":"1","article-title":"A theoretical and practical clarification on the calculation of reflection loss for microwave absorbing materials","volume":"8","author":"Liu","year":"2018","journal-title":"AIP Adv."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"7471","DOI":"10.1021\/am500862g","article-title":"Enhanced Microwave Absorption Property of Reduced Graphene Oxide (RGO)-MnFe2O4 Nanocomposites and Polyvinylidene Fluoride","volume":"6","author":"Zhang","year":"2014","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1080\/02772248.2014.931960","article-title":"Characteristics and mechanisms of 4A zeolite supported nanoparticulate zero-valent iron as Fenton-like catalyst to degrade methylene blue","volume":"96","author":"Wu","year":"2014","journal-title":"Toxicol. Environ. Chem."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.ibiod.2016.04.039","article-title":"The role of nanoscale zerovalent iron particles in the biosorption and biodegradation of BDE-47 by Pseudomonas stutzeri, under aerobic conditions","volume":"112","author":"Huang","year":"2016","journal-title":"Int. Biodeterior. Biodegradat."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/j.jcis.2014.01.013","article-title":"Novel low-cost Fenton-like layered Fe-titanate catalyst: Preparation, characterization and application for degradation of organic colorants","volume":"422","author":"Chen","year":"2014","journal-title":"J. Colloid Interface Sci."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"346","DOI":"10.1016\/j.psep.2016.09.021","article-title":"Palmyra tuber peel derived activated carbon and anatase TiO2 nanotube based nanocomposites with enhanced photocatalytic performance in rhodamine 6G dye degradation","volume":"104","author":"Natarajan","year":"2016","journal-title":"Process Saf. Environ. Prot."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1016\/j.jcis.2017.08.077","article-title":"Two hybrid Au-ZnO aggregates with different hierarchical structures: A comparable study in photocatalysis","volume":"509","author":"Cheng","year":"2017","journal-title":"J. Colloid Interface Sci."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"145","DOI":"10.1016\/j.colsurfa.2017.01.039","article-title":"Fe\/Fe3C nanoparticles loaded on Fe\/N-doped graphene as an efficient heterogeneous Fenton catalyst for degradation of organic pollutants","volume":"518","author":"Huang","year":"2017","journal-title":"Colloids Surf. A Physico. Chem. Eng. Asp."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1016\/j.solener.2016.01.050","article-title":"Photodecolorization of rhodamine under sunlight irradiation driven by chabazite","volume":"129","year":"2016","journal-title":"Sol. Energy"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"243","DOI":"10.1016\/j.cej.2013.12.058","article-title":"Significantly enhanced photocatalytic performance of CdS coupled nanosheets and the mechanism study","volume":"241","author":"Liu","year":"2014","journal-title":"Chem. Eng. J."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1016\/j.apcata.2014.01.030","article-title":"Carbon nanotube\/titanium nanotube composites loaded platinum nanoparticles as high performance photocatalysts","volume":"475","author":"Ibrahim","year":"2014","journal-title":"Appl. Catal. A Gen."}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/11\/11\/2212\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:28:32Z","timestamp":1760196512000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/11\/11\/2212"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,11,7]]},"references-count":54,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2018,11]]}},"alternative-id":["ma11112212"],"URL":"https:\/\/doi.org\/10.3390\/ma11112212","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,11,7]]}}}