Photocatalytic degradation of reactive anionic dyes RB5, RR198 and RY145 via rare earth element (REE) lanthanum substituted CaTiO3 perovskite catalysts

Journal of Materials Research and Technology

Kurinjinathan Panneerselvam¹  Y. Slimani²  Mary George²  Tahseen Kamal³  Anish Khan⁴  Ayyar Manikandan⁵  A. Baykal⁶  Roselin Ranjitha Mathiarasu⁷  M.A. Almessiere⁷  K. Kanmani Raja⁸  Abdullah M. Asiri⁹ 

[1] Centre for Catalysis and Renewable Energy, Bharath Institute of Higher Education and Research (BIHER), Chennai, 600 073, Tamil Nadu, India;Corresponding author.;;Department of Biophysics, Institute for Research &Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441, Dammam, Saudi Arabia;Department of Chemistry, Bharath Institute of Higher Education and Research (BIHER), Chennai, 600 073, Tamil Nadu, India;Department of Chemistry, Government Arts College for Men (Autonomous) Affiliated to University of Madras, Nandanam, Chennai, 600035, India;Department of Chemistry, Stella Maris College (Autonomous) Affiliated to University of Madras, Chennai, 600086, India;Department of Physics, AMET (Deemed to be University), Chennai, 603112, Tamil Nadu, India;Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam, 31441, Saudi Arabia;

关键词: Calcium titanate;    Deep eutectic solvent;    Photocatalytic degradation;    Reactive black 5;    Reactive red 198;    Reactive yellow 145;   

DOI  :  

来源: DOAJ

【 摘 要 】

Water serves as a key component in the basis of life to function and evolve unceasingly. Excessive deterioration of fresh water resources through discarding enormous amounts of dye effluents is becoming a problem of concern. In this work we report a conventional solid-state technique improved with choline chloride: urea DES medium in 1:2 ratio for synthesizing pure calcium titanate (CTO) and lanthanum doped calcium titanate (LaxCa1-xTiO3; x = 0.0 and 0.5). Both the materials were subjected to photocatalytically degrade reactive dyes RB5, RR198 and RY145. La-doped calcium titanate showed effective degradation efficiency when compared to the pure calcium titanate. On increasing the concentration of the dye, the efficiency of degradation declined gradually. Also, the efficiency was assessed to be greatest for RY145 followed by RR198 and lastly RB5. Efficiency dependence on different pH exposed the enhanced degradation in acidic medium and comparatively lowered pH in basic medium. Recyclability was highly satisfying and promising to validate the real-time applicability of the catalyst.

【 授权许可】

Unknown