نوع مقاله : مقاله پژوهشی
نویسندگان
1 فناوریهای محیط زیست- دانشگاه شهید بهشتی تهران
2 Tehran, Iran
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Photocatalytic processes using solar energy are one of the new chemical purification methods in the purification of colored organic pollutants, which have attracted a lot of attention at present. Graphite carbon nitride photocatalyst (g-C3N4) was synthesized using thermal polymerization method and using (single or combined) melamine, thiourea and ammonium chloride precursors. Synthesized photocatalysts were analyzed to investigate their structure, morphology, and properties. The results of the experiments showed that the graphite carbon nitride synthesized with the combined precursor of melamine, thiourea and ammonium chloride (MTA) with a dose of 0.2 g/l and a color concentration of 50 mg/l has the highest performance on the degradation of RhB color and after 2 hours, caused 100% decolorization of the dye solution. Also, the photocatalytic efficiency of MTA in the degradation of RhB dye was almost constant in five consecutive cycles. In addition, according to the results of the trapping experiments, active species of superoxide radical (•O2-) was the dominant species for the degradation process of RhB.
کلیدواژهها [English]
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