Please use this identifier to cite or link to this item:
標題: Electrocatalytic characterization and dye degradation of Nano-TiO2 electrode films fabricated by CVD
作者: Chang, J.H.
Ellis, A.V.
Hsieh, Y.H.
Tung, C.H.
Shen, S.Y.
關鍵字: Electrocatalytic
Titanium dioxide
Cyclic voltammetry
waste-water treatment
doped diamond electrodes
nano tio2
photocatalytic degradation
organic pollutants
期刊/報告no:: Science of the Total Environment, Volume 407, Issue 22, Page(s) 5914-5920.
摘要: A 20-40 nm anatase-titania film on a titanium electrode was fabricated using chemical vapor deposition (CVD). The film was characterized using field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD). and atomic force microscopy (AFM). The CVD deposition time and number of deposition coatings were evaluated to establish the appropriate film fabrication parameters. Results indicate that two coatings at a deposition time of 6 h each produced the best nano-TiO2 electrode films (NTEFs) with an even distribution of ca. 20 nm diameter nanoparticles in the anatase lattice. The NTEF was tested as an electrocatalytic anode to investigate the degradation efficiency in treating methyl orange dye wastewater. A high removal efficiency of methyl orange dye and total organic carbon (TOC) of 97 and 56%, respectively; was achieved using a current density of 20 mA cm(-2) for 160 min. Cyclic voltammetry showed that the electrochemical degradation reaction rate at the NTEF surface was predominately driven by molecular diffusion. The electrocatalytic decomposition rate of organic pollutants at the NTEF is controlled by mass transport, which was associated with the nanostructure of the electrocatalytic electrode. (C) 2009 Elsevier B.V. All rights reserved.
ISSN: 0048-9697
Appears in Collections:期刊論文



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.