Photocatalytic degradation kinetics of Reactive Black 5 (RB5) dyestuff on TiO2 modified by pretreatment with ultrasound energy

SAYGI B., TEKİN D.

REACTION KINETICS MECHANISMS AND CATALYSIS, cilt.110, sa.1, ss.251-258, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 110 Sayı: 1
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s11144-013-0594-x
  • Dergi Adı: REACTION KINETICS MECHANISMS AND CATALYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.251-258
  • Anahtar Kelimeler: Photocatalysis, Ultrasound, Modified TiO2, Degradation kinetics, Reactive Black 5 Dye, AZO-DYES, SONOPHOTOCATALYTIC DEGRADATION, METHYL-ORANGE, OXIDATION, FENTON, WATER
  • Atatürk Üniversitesi Adresli: Evet

Özet

In the photocatalytic degradation of Reactive Black 5 (RB5) dyestuff, the photocatalytic activity of Riedel-de Haen brand TiO2, whose photocatalytic activity is low, was increased by ultrasound energy applied as a photocatalyst in the experiments. The BET surface areas of TiO2 with and without ultrasound treatment were 38 and 4 m(2)/g. The initial dye concentration, temperature and the effects of light intensity on the photocatalytic degradation kinetics of RB5 were examined. It was determined that the photocatalytic degradation follows pseudo-first order kinetics, depending on the dye concentration. The activation energy of the reaction was determined to be 29.3 kJ/mol.