alexa Abstract | Use of semi-conducting lead sulfide for degradation of azure-B: An eco-friendly process

Der Chemica Sinica
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Research Article Open Access

Abstract

Different methods have been adopted for the removal and degradation of dyes from effluents of textile, dyeing and printing industries. These methods have their own merits and drawbacks. In the present investigation, Lead sulfide has been used as a photocatalyst for the degradation of azure-B. The effect of different parameters like the pH, concentration of dye, amount of semiconductor and light intensity on the rate of reaction has been investigated. The reaction follows pseudo-first order kinetics. The optimum conditions were obtained as: [azure-B] = 3.00·10–6 M; PbS = 0.12 g; pH = 8.0, and light intensity = 37.0 mW·cm–2. The rate constant was 2.50·10–3 sec–1. A mechanism has been proposed for the degradation of azure-B involving hydroxyl radicals

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Author(s): Inderjeet Yadav Shamta Nihalani and Shipra Bhardwaj

Keywords

semiconductor, azur-B, hydroxyl radical, Lead sulphide, degradation, chemistry

 
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