完整後設資料紀錄
DC 欄位語言
dc.contributor.authorDoong, Ruey-anen_US
dc.contributor.authorChang, Sue-minen_US
dc.contributor.authorTsai, Chia-weien_US
dc.date.accessioned2014-12-08T15:28:43Z-
dc.date.available2014-12-08T15:28:43Z-
dc.date.issued2013-01-17en_US
dc.identifier.issn0926-3373en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.apcatb.2012.09.011en_US
dc.identifier.urihttp://hdl.handle.net/11536/20783-
dc.description.abstractOne-dimensional nanotubes are promising nanostructured materials for a wide variety of environmental applications. In this study, the Cu-deposited titanate nanotubes (TNTs) were fabricated using an alkaline hydrothermal method at 150 degrees C and then 0.5-2 wt% Cu(II) ions were photodeposited onto the calcined TNTs at 500 degrees C for enhanced photodegradation of bisphenol A (BPA) under illumination of 365 nm UV light. The as-synthesized TNTs showed tubular structures with the outer diameter and inter-layer spacing of 7-10 and 0.8 nm, respectively. The X-ray absorption near-edge spectral results provided a strong support on the partially structural change from layered trititanate to anatase TiO2 through the distortion of octahedral TiO6 unit at 500 degrees C and the production of mixture of CuO and Cu2O after photodeposition of Cu ions, resulting in the formation of Cu-deposited TiO2/TNT nanocomposites to enhance the photocatalytic activity. A nearly complete removal of BPA by the Cu-deposited TiO2/TNTs was observed, and the pseudo-first-order rate constants (k(obs)) for BPA photodegradation by Cu-deposited TiO2/TNTs at pH 7.0 were 1.8-5.2 and 4.3-12.7 times higher than those of pure Degussa P25 and ST01 TiO2, respectively. In addition, the k(obs) for BPA photodegradation reached the maximum value of 0.253 +/- 0.032 min(-1) at 1 wt% Cu(II). The X-ray photoelectron spectra showed that the ratio of Cu2O to total Cu increased from 3.2% in the dark to 35.2% after illumination of 365 nm UV light for 5 min. In addition, electron paramagnetic resonance results indicated that the copper ions could serve as the electron mediators to prolong the retention time of photo-generated radicals, resulting in the enhancement of photodegradation efficiency and rate of BPA by Cu-deposited TiO2/TNTs. (C) 2012 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectCopper ionsen_US
dc.subjectTitanate nanotubes (TNTs)en_US
dc.subjectBisphenol Aen_US
dc.subjectPhotodepositionen_US
dc.subjectPhotocatalytic activityen_US
dc.titleEnhanced photoactivity of Cu-deposited titanate nanotubes for removal of bisphenol Aen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.apcatb.2012.09.011en_US
dc.identifier.journalAPPLIED CATALYSIS B-ENVIRONMENTALen_US
dc.citation.volume129en_US
dc.citation.issueen_US
dc.citation.spage48en_US
dc.citation.epage55en_US
dc.contributor.department環境工程研究所zh_TW
dc.contributor.departmentInstitute of Environmental Engineeringen_US
dc.identifier.wosnumberWOS:000312689500005-
dc.citation.woscount9-
顯示於類別:期刊論文


文件中的檔案:

  1. 000312689500005.pdf

若為 zip 檔案,請下載檔案解壓縮後,用瀏覽器開啟資料夾中的 index.html 瀏覽全文。