Characterization and photocatalytic properties of TiO2-nanosols synthesized by hydrothermal process at low temperature

Sayilkan F., ASILTURK M., ERDEMOGLU S., AKARSU M., SAYILKAN H., ERDEMOGLU M., ...Daha Fazla

MATERIALS LETTERS, cilt.60, sa.2, ss.230-235, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 60 Sayı: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.matlet.2005.08.023
  • Dergi Adı: MATERIALS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.230-235
  • Anahtar Kelimeler: nano-titania, hydrothermal process, photodegradation, dye, transparent sol, AZO-DYE, NANOCRYSTALLINE ANATASE, DEGRADATION, TIO2, TITANIA, WATER, ZNO, PHOTODEGRADATION, POLLUTANTS, PRECURSOR
  • İnönü Üniversitesi Adresli: Evet

Özet

Transparent nanocrystalline pure anatase titania (nano-TiO2) was synthesized by hydrothermal process at 200 degrees C. Photocatalytic activity of the nano-TiO2 as in the form of sol was tested for degradation of Methylene Blue (MB) and Reactive Red 120 (RR-120) in aqueous solutions. Structural and physico-chemical properties of the nano-TiO2 were characterized using powder XRD, SEM, BET, FTIR and elemental analyses. Complete photodegradation of RR-120 was successfully achieved by aid of the nano-TiO2 whereas NIB was not degraded, maybe because of reversible color change in nano-TiO2 sol/MB mixture after the LTV irradiation was stopped. Potocatalytic activity of the synthesized the nano-TiO2 for degradation of RR-120 was compared with Degussa P-25 at optimum conditions determined for RR-120. It was found that the nano-TiO2 can be repeatedly used with higher photocatalytic activity than Degussa P-25. (c) 2005 Elsevier B.V All rights reserved.