A Sharp Jump in Photocatalytic Activity of Elemental Sulfur for Dye Degradation in Alkaline Solution

In this study, we report a low ‐cost and fast method for the degradation of methyl violet in water under visible light and also sunlight by using elemental sulfur (S8). The results show that sulfur is a good photocatalyst which operates under visible light and can be utilized for degradation of methyl violet. The photocatalytic degradation of methyl violet in acidic, neutral and alkaline media was investigated and it was found that the photocatalytic efficiency increases dramatically in alkaline solution. The effects of the initial concentration of the dye, photocatalyst dosage, solution pH and photocatalyst reusability were investigated. The kinetics of the reaction were studied in detail and the photocatalytic rate equation was presented.

Source: Photochemistry and Photobiology - June 24, 2020 Category: Science Authors: Vahideh Alvandi Peyman, Saeid Azizian Tags: RESEARCH ARTICLE Source Type: research