Effectiveness of metal oxide catalysts for the degradation of 1,4-dioxane

Simple item page
dc.citation.firstpage27042en_US
dc.citation.journalTitleRSC Advancesen_US
dc.citation.lastpage27049en_US
dc.citation.volumeNumber9en_US
dc.contributor.authorHeck, Kimberly N.en_US
dc.contributor.authorWang, Yehongen_US
dc.contributor.authorWu, Gangen_US
dc.contributor.authorWang, Fengen_US
dc.contributor.authorTsai, Ah-Limen_US
dc.contributor.authorAdamson, David T.en_US
dc.contributor.authorWong, Michael S.en_US
dc.date.accessioned2019-11-14T17:52:22Zen_US
dc.date.available2019-11-14T17:52:22Zen_US
dc.date.issued2019en_US
dc.description.abstract1,4-dioxane, commonly used as a solvent stabilizer and industrial solvent, is an environmental contaminant and probable carcinogen. In this study, we explored the concept of using metal oxides to activate H2O2 catalytically at neutral pH in the dark for 1,4-dioxane degradation. Based on batch kinetics measurements, materials that displayed the most suitable characteristics (high 1,4-dioxane degradation activity and high H2O2 consumption efficiency) were ZrO2, WOx/ZrO2, and CuO. In contrast, materials like TiO2, WO3, and aluminosilicate zeolite Y exhibited both low 1,4-dioxane degradation and H2O2 consumption activities. Other materials (e.g., Fe2O3 and CeO2) consumed H2O2 rapidly, however 1,4-dioxane degradation was negligible. The supported metal oxide WOx/ZrO2 was the most active for 1,4-dioxane degradation and had higher H2O2 consumption efficiency compared to ZrO2. In situ acetonitrile poisoning and FTIR spectroscopy results indicate different surface acid sites for 1,4-dioxane and H2O2 adsorption and reaction. Electron paramagnetic resonance measurements indicate that H2O2 forms hydroxyl radicals (˙OH) in the presence of CuO, and unusually, forms superoxide/peroxyl radicals (˙O2−) in the presence of WOx/ZrO2. The identified material properties suggest metal oxides/H2O2 as a potential advanced oxidation process in the treatment of 1,4-dioxane and other recalcitrant organic compounds.en_US
dc.identifier.citationHeck, Kimberly N., Wang, Yehong, Wu, Gang, et al.. "Effectiveness of metal oxide catalysts for the degradation of 1,4-dioxane." <i>RSC Advances,</i> 9, (2019) Royal Society of Chemistry: 27042-27049. https://doi.org/10.1039/C9RA05007H.en_US
dc.identifier.digitalc9ra05007hen_US
dc.identifier.doihttps://doi.org/10.1039/C9RA05007Hen_US
dc.identifier.urihttps://hdl.handle.net/1911/107680en_US
dc.language.isoengen_US
dc.publisherRoyal Society of Chemistryen_US
dc.rightsThis article is licensed under a Creative Commons Attribution 3.0 Unported Licence.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/en_US
dc.titleEffectiveness of metal oxide catalysts for the degradation of 1,4-dioxaneen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
c9ra05007h.pdf
Size:
791.56 KB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Chemical and Biomolecular Engineering Publications
Chemistry Publications
Civil and Environmental Engineering Publications
Materials Science and NanoEngineering Publications