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dc.contributor.authorDoong, Ruey-anen_US
dc.contributor.authorLiao, Chun-Yien_US
dc.date.accessioned2018-08-21T05:53:52Z-
dc.date.available2018-08-21T05:53:52Z-
dc.date.issued2017-05-31en_US
dc.identifier.issn1383-5866en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.seppur.2017.02.028en_US
dc.identifier.urihttp://hdl.handle.net/11536/145264-
dc.description.abstractA rapid and green synthesis of Cu-deposited N-doped TiO2/titanate nanotubes (TNTs) by the aid of microwave-assisted hydrothermal method was developed for the enhanced photocatalytic activity toward bisphenol A (BPA) degradation under UV and visible light irradiations. The TNTs are first synthesized at 150 degrees C for 3 h by microwave-assisted method followed by the calcination at 450 degrees C under NH3/N-2 atmosphere after the adsorption of 2-10 wt% Cu(II) ions to produce metallic Cu-deposited N-TiO2/TNTs nanocomposites. The microstructural analyses show that the Cu(II) ions are converted to Cu-0 in NH3/ N-2 with mean particle sizes of 39-42 nm and N atoms are incorporated into the lattices of TiO2/TNTs. The Cu-deposited N-TiO2/TNT nanocomposites show the superior photoactivity toward BPA degradation under both UV and visible light irradiations. The photodegradation efficiency and rate of BPA increases upon increasing Cu amount and the optimal mass loadings of 8-10 wt% are obtained. In addition, the pseudo-first-order rate constants for BPA degradation increase 5.3-6.8 and 2.1-3.0 times under UV and visible light irradiations, respectively, when compare with those of Degussa P25 TiO2. The Schottky barrier between Cu-0 and N-TiO2 promotes the electron transfer from N-doped TiO2 to metallic Cu nanoparticles under UV and visible light irradiations, resulting in the efficient generation of prolonged oxygen-containing radicals for enhanced photodegradation of BPA. Results obtained in this study clearly open a new pave for the green synthesis of 1-dimensional metal-metal oxide nanophotocatalysts which can be potentially used in the fields of purification, green chemistry and photocatalysis. (C) 2017 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectTitanate nanotubes (TNTs)en_US
dc.subjectNitrogen-dopeden_US
dc.subjectMetallic copperen_US
dc.subjectBisphenol Aen_US
dc.subjectVisible-light-drivenen_US
dc.titleEnhanced photocatalytic activity of Cu-deposited N-TiO2/titanate nanotubes under UV and visible light irradiationsen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.seppur.2017.02.028en_US
dc.identifier.journalSEPARATION AND PURIFICATION TECHNOLOGYen_US
dc.citation.volume179en_US
dc.citation.spage403en_US
dc.citation.epage411en_US
dc.contributor.department環境工程研究所zh_TW
dc.contributor.departmentInstitute of Environmental Engineeringen_US
dc.identifier.wosnumberWOS:000397688200043en_US
Appears in Collections:Articles