Catalytic properties of titania nanotube prepared by simple refluxing method

✍ Scribed by Khan, M.Alam; Kang, Yong-Mook

• Book ID: 121825080
• Publisher: Elsevier Science
• Year: 2014
• Tongue: English
• Weight: 800 KB
• Volume: 116
• Category: Article
• ISSN: 0167-577X
• DOI: 10.1016/j.matlet.2013.11.021

✦ Synopsis

Cost effective, well crystallized zigzag titania nanotubes have been prepared by utilizing a high crystalline titanium dioxide nanopowder and refluxing it into a 10 M KOH solution at 160 1C for 18 h under atmospheric pressure. These nanotubes possess a diameter of ca. 23 nm and average length of 600 nm and have a rough surface all around with BET surface area of 58 m 2 /g. The prepared nanotube shows high crystal intensity of the anatase peak ( ) almost five times compared to the hydrothermally synthesized nanotubes (12 nm in diameter, surface area of 87 m 2 /g). Using a model reaction, the photocatalytic performances in aqueous solution were carried out under UV-irradiation and it was observed that nanotubes prepared by the refluxing method shows superior photocatalytic decoloration efficiency (79%) of methyl orange compared to the hydrothermally driven nanotubes and nanocrystals (45%). The prepared catalysts were analyzed by FE-SEM, XRD, UV-vis DRS spectra and BET surface area techniques.