https://scholars.lib.ntu.edu.tw/handle/123456789/425157
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | HSING-CHENG HSI | en_US |
dc.contributor.author | Tsai, Cheng Yen | en_US |
dc.creator | Tsai, Cheng Yen;HSING-CHENG HSI | - |
dc.date.accessioned | 2019-09-26T03:25:54Z | - |
dc.date.available | 2019-09-26T03:25:54Z | - |
dc.date.issued | 2012-05-15 | - |
dc.identifier.issn | 13858947 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/425157 | - |
dc.description.abstract | Oxygen-vacant titanium dioxide (TiO 2-x ) nanoparticles possessing a narrower band gap were synthesized with a single-step process using N 2 /Ar/He thermal plasma as a heating source. Sample characterization showed that the formed TiO 2-x nanoparticles had a size within 5-40nm and were in a mixing form of anatase and rutile. An evident absorption red shift to 470nm wavelength was observed. The deconvolution results of XPS spectra supported the formation of TiO 2-x due to the presence of Ti 3+ 2p peaks. The Hg removal efficiency of TiO 2-x nanoparticles increased with increasing O 2 concentration and in the presence of light irradiation, suggesting an enhancement in Hg 0 oxidation. H 2 O molecules, however, greatly reduced the Hg removal of TiO 2-x under visible-light (VL) irradiation. The photoinduced hydrophilicity of TiO 2-x under VL irradiation was suspected to amplify the competitive adsorption of H 2 O that decreased Hg capture. Hg removal performances at 50°C were better than those at 25 and 100°C, suggesting that both adsorption and catalytic oxidation limit the Hg removal. These observations also implicate that the bonding between TiO 2-x and adsorbed Hg was weak and adsorption reaction may be reversible. © 2012 Elsevier B.V. | en_US |
dc.publisher | ELSEVIER SCIENCE SA | en_US |
dc.relation.ispartof | Chemical Engineering Journal | en_US |
dc.subject | Elemental mercury | Oxygen vacancy | Plasma torch | Titanium dioxide | en_US |
dc.title | Synthesis of TiO <inf>2-x</inf> visible-light photocatalyst using N <inf>2</inf> /Ar/He thermal plasma for low-concentration elemental mercury removal | en_US |
dc.type | journal article | en |
dc.identifier.doi | https://api.elsevier.com/content/abstract/scopus_id/84860557395 | - |
dc.identifier.doi | 10.1016/j.cej.2012.03.035 | - |
dc.identifier.scopus | 2-s2.0-84860557395 | - |
dc.identifier.isi | WOS:000304793300045 | - |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/84860557395 | - |
dc.relation.pages | 378 | en_US |
dc.relation.journalvolume | 191 | en_US |
dc.relation.pageend | 385 | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
crisitem.author.dept | Environmental Engineering | - |
crisitem.author.orcid | 0000-0001-5558-2077 | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 環境工程學研究所 |
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