Photodegradation of organic dyes and industrial wastewater in the presence of layer-type perovskite materials under visible light irradiation
作者： Ramesh Gade , Jakeer Ahemed , Kalyana Lakshmi Yanapu , Seid Yimer Abate , Yu-Tai Tao
DOI: 10.1016/J.JECE.2018.06.057
关键词:
摘要: Abstract Layer-type perovskite materials based on AIAIITi2O6 (AI = Na or Ag Cu and AII La) system for the degradation of several organic dyes industrial wastewater under visible-light irradiation are reported. The known material NaLaTi2O6 (NLTO) was prepared by a new sol-gel process. Ion-exchange Na+ ions in NLTO with Ag+ Cu2+ ion led to AgLaTi2O6 (ALTO) Cu0.5LaTi2O6 (CLTO) respectively. All were thoroughly characterized using PXRD, FESEM, HRTEM, UV–vis DRS, IR, XPS Solid State Photo-luminescence techniques. series utilized Congo Red dye, 4-chlorophenol 4,4′-bis(2-sulfostyryl)biphenyl as reference pollutants, well wastewater. mineralization process evaluated through mass spectrometry, which showed that after 60 min irradiation, dye degraded all fragments disappeared. Degradation studied newly designed photoreactor via two-stage Mechanistic studies fast carried out presence various scavengers. Finally, photomineralized chemical oxygen demand (COD) test obtained value is close standard value. Highest efficiency found ALTO photocatalyst, followed CLTO then NLTO.
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