Green Synthesis Of Copper Oxide With Mgal Layered Double Hydroxide Nanocomposite For Degradation Of Methylene Blue

Abstract

Photo catalysis Is One Of The Most Promising And Cost-Effective Technologies To Eliminate Organic Pollutants. Copper (Ii) Oxide Nanoparticles Are Well-Known Photo catalysts For Degrading Organic Pollutants Due To Its Natural Abundance, Low Cost, Low Toxicity, And High Catalytic Activity. This Study Used Allium Cepa L. Peels Extract To Synthesized Copper Oxide Nan particles, Which Were Then Immobilized On The Surface Of Mgal-Layered Double Hydroxide To Form Cuo/Mgal-Ldh Nan composites With Different Weight Ratio Of Cuo/Ldh (1:1, 1:2, And 2:1) Via Co-Precipitation Method. Various Characterization Techniques Were Used To Characterize All Synthesized Nanocomposites. The Degradation Of Cationic Methylene Blue (Mb) Under Visible Light Irradiation Was Used To Assess The Photo catalytic Performance Of The Synthesized Catalysts. All Of The As-Synthesized Nan composites were Effective Photo catalysts For The Photo degradation Of An Mb Solution; However, The Cuo/Mgal-Ldh (1:2) Had The Best Photo catalytic Ability Of The Catalysts Studied, Achieving 99.20 % Mb Degradation In 80 Minutes Under Visible-Light Irradiation. The Photo catalytic Activity Of The Nano composites Was Significantly Greater Than That Of Pristine Cuo Nps Made In The Same Way, Due To Their Uniform Distribution Of Cuo Nps, Which Facilitates The Generation Of Electrons And Holes Pairs, Improves Charge Transfer, And Reduces Charge Recombination. By Providing Enough Space For Nps Distribution, The Ldh Was Able To Induce The Required Photostability. The Cuo/Mgal Ldh (1:2) Nano composites Exhibited A Pseudo-First-Order Rate Constant Reaching A Maximum Value Of 0.03141min-1. Cuo/Mgal-Ldh (1:2) Nano composites Can Be Easily Regenerated And Reused For Up To Five Cycles Without Any Significant Loss Of The Catalytic Activity. In Addition, A Possible Methylene Blue Degradation Mechanism Was Proposed.