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Visible light induced sonophotocatalytic degradation of Reactive Red dye 198 using dye sensitized TiO2.
Ultrason Sonochem. 2007 Jul; 14(5):531-537.US

Abstract

In this paper we are reporting the accelerated sonophotocatalytic degradation of Reactive Red (RR) 198 dye under visible light using dye sensitized TiO(2) activated by ultrasound. The effect of sonolysis, photocatalysis and sonophotocatalysis under visible light has been examined to study the influence on the degradation rates by varying the initial substrate concentration, pH and catalyst loading to ascertain the synergistic effect on the degradation techniques. Ultrasonic activation at 47kHz contributes through cavitation leading to the splitting of H(2)O(2) produced by both photocatalysis and sonolysis. This results in the formation of oxidative species, such as singlet oxygen ((1)O(2)) and superoxide (O2-*) radicals in the presence of oxygen. Sonication increases the amount of reactive radical species, inducing faster oxidation of the substrate and degradation of intermediates and also the deaggregation of the photocatalyst which are responsible for the observed synergy. Further, the photocatalytic activity of RR 198 dye sensitized TiO(2) is demonstrated by the degradation of phenol under visible light and ultrasound. A comparative study using TiO(2), Hombikat UV 100 and ZnO was also carried out.

Authors+Show Affiliations

School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147 004, India.Basic and Applied Sciences, University College of Engineering, Punjabi University, Patiala 147 002, India. Electronic address: vasun7@yahoo.co.in.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17289421

Citation

Kaur, Sumandeep, and Vasundhara Singh. "Visible Light Induced Sonophotocatalytic Degradation of Reactive Red Dye 198 Using Dye Sensitized TiO2." Ultrasonics Sonochemistry, vol. 14, no. 5, 2007, pp. 531-537.
Kaur S, Singh V. Visible light induced sonophotocatalytic degradation of Reactive Red dye 198 using dye sensitized TiO2. Ultrason Sonochem. 2007;14(5):531-537.
Kaur, S., & Singh, V. (2007). Visible light induced sonophotocatalytic degradation of Reactive Red dye 198 using dye sensitized TiO2. Ultrasonics Sonochemistry, 14(5), 531-537. https://doi.org/10.1016/j.ultsonch.2006.09.015
Kaur S, Singh V. Visible Light Induced Sonophotocatalytic Degradation of Reactive Red Dye 198 Using Dye Sensitized TiO2. Ultrason Sonochem. 2007;14(5):531-537. PubMed PMID: 17289421.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Visible light induced sonophotocatalytic degradation of Reactive Red dye 198 using dye sensitized TiO2. AU - Kaur,Sumandeep, AU - Singh,Vasundhara, Y1 - 2007/02/06/ PY - 2006/07/15/received PY - 2006/09/05/revised PY - 2006/09/30/accepted PY - 2007/2/10/pubmed PY - 2007/8/4/medline PY - 2007/2/10/entrez SP - 531 EP - 537 JF - Ultrasonics sonochemistry JO - Ultrason Sonochem VL - 14 IS - 5 N2 - In this paper we are reporting the accelerated sonophotocatalytic degradation of Reactive Red (RR) 198 dye under visible light using dye sensitized TiO(2) activated by ultrasound. The effect of sonolysis, photocatalysis and sonophotocatalysis under visible light has been examined to study the influence on the degradation rates by varying the initial substrate concentration, pH and catalyst loading to ascertain the synergistic effect on the degradation techniques. Ultrasonic activation at 47kHz contributes through cavitation leading to the splitting of H(2)O(2) produced by both photocatalysis and sonolysis. This results in the formation of oxidative species, such as singlet oxygen ((1)O(2)) and superoxide (O2-*) radicals in the presence of oxygen. Sonication increases the amount of reactive radical species, inducing faster oxidation of the substrate and degradation of intermediates and also the deaggregation of the photocatalyst which are responsible for the observed synergy. Further, the photocatalytic activity of RR 198 dye sensitized TiO(2) is demonstrated by the degradation of phenol under visible light and ultrasound. A comparative study using TiO(2), Hombikat UV 100 and ZnO was also carried out. SN - 1350-4177 UR - https://www.unboundmedicine.com/medline/citation/17289421/Visible_light_induced_sonophotocatalytic_degradation_of_Reactive_Red_dye_198_using_dye_sensitized_TiO2_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1350-4177(06)00136-2 DB - PRIME DP - Unbound Medicine ER -