Journal of the Serbian Chemical Society 2011 Volume 76, Issue 7, Pages: 1049-1055
doi:10.2298/JSC100425082A
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Photodegradation of Naphthol Green B in the presence of semiconducting antimony trisulphide

Ameta Rakshit, Punjabi P.B., Ameta Suresh C.

Different methods of wastewater treatment are being used for the removal of dyes from their solution, but in most of the cases, either homogeneous catalysts or different adsorbents are used. These methods have their own merits and demerits. In the present work, antimony trisulphide was used as a heterogeneous catalyst. The effects of different parameters on the rate of the reaction were observed, such as pH, concentration of dye, amount of semiconductor and light intensity. A tentative mechanism is proposed in which the role of hydroxyl radical as an active oxidizing species is shown for degradation of Naphthol Green B.

Keywords: semiconductor, photocatalyst, Naphthol Green B, hydroxyl radical, antimony trisulphide

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