Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79287
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dc.contributorDepartment of Civil and Environmental Engineeringen_US
dc.creatorLi, HWen_US
dc.creatorHuang, TTen_US
dc.creatorLu, YFen_US
dc.creatorCui, Len_US
dc.creatorWang, ZYen_US
dc.creatorZhang, CFen_US
dc.creatorLee, SCen_US
dc.creatorHuang, Yen_US
dc.creatorCao, JJen_US
dc.creatorHo, WKen_US
dc.date.accessioned2018-11-05T01:45:21Z-
dc.date.available2018-11-05T01:45:21Z-
dc.identifier.issn2051-8153en_US
dc.identifier.urihttp://hdl.handle.net/10397/79287-
dc.language.isoenen_US
dc.publisherRoyal Society of Chemistryen_US
dc.rightsThis journal is © The Royal Society of Chemistry 2018en_US
dc.rightsThe following publication Li, H., Huang, T., Lu, Y., Cui, L., Wang, Z., Zhang, C., ... & Ho, W. (2018). Unraveling the mechanisms of room-temperature catalytic degradation of indoor formaldehyde and its biocompatibility on colloidal TiO 2-supported MnO x–CeO 2. Environmental Science: Nano, 5(5), 1130-1139 is available at https://doi.org/10.1039/c8en00176fen_US
dc.titleUnraveling the mechanisms of room-temperature catalytic degradation of indoor formaldehyde and its biocompatibility on colloidal TiO2-supported MnOx-CeO2en_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage1130en_US
dc.identifier.epage1139en_US
dc.identifier.volume5en_US
dc.identifier.issue5en_US
dc.identifier.doi10.1039/c8en00176fen_US
dcterms.abstractThis work overcomes the limitations in room-temperature and moisture-dependent activity of transition metal oxide-based catalysts for sub-ppm formaldehyde removal. The active site exposure and selfassembly hydrophilicity were highlighted in MnOx-CeO2 (MCO) nanospheres after the loading of colloidal 2.1 wt% TiO2 particles (TO-MCO). Approximately 57% (relative humidity = 72%) and 41% (dry air) recycling catalytic activities at 35 degrees C were achieved. Our results proved that surface electron transfer, which was previously weakened because of the loss of surface oxygen species and unsuitable defect-site depositions of low active ions, in the MCO catalyst was recovered via the dispersion of hydrophilic Ti-O groups. This electron transfer was also strongly correlated with the specific surface area, porosity, and oxidation states of transition metals. The greater active site exposure derived from the cyclic electron transfer eventually enhanced the HCHO chemisorption and participation of oxygen species on the surface of TO-MCO throughout the bimetallic (Mn-Ce) dismutation reactions. The abundant superoxide radicals that were activated by these oxygen species prompted a nucleophilic attack on carbonyl bonds. Direct photoionization mass spectrometry determined formic acid, dioxirane (minor), and HOCH2OOH (little) as intermediates governing the HCHO selectivity to CO2. The cytotoxicity of catalysts exposed to yeast cells was evaluated for their potential environmentally friendly application indoors.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationEnvironmental science : NANO, 1 May 2018, v. 5, no. 5, p. 1130-1139en_US
dcterms.isPartOfEnvironmental science : NANOen_US
dcterms.issued2018-05-01-
dc.identifier.isiWOS:000432684200009-
dc.identifier.scopus2-s2.0-85047219637-
dc.identifier.eissn2051-8161en_US
dc.identifier.rosgroupid2017001522-
dc.description.ros2017-2018 > Academic research: refereed > Publication in refereed journalen_US
dc.description.validate201810 bcrcen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumberRGC-B1-102-
dc.description.fundingSourceRGCen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextThe National Key Research and Development Program of China; The Ministry of Science and Technology of China; The National Science Foundation of China; The Chinese Academy of Sciencesen_US
dc.description.pubStatusPublisheden_US
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