Sunlight driven rapid and efficient photodegradation of crystal violet using magnesium doped zinc oxide nanostructures

• Published in: Materials chemistry and physics 2023-02, Vol.295, p.127075, Article 127075
• Main Authors: Gokhale, Tejas A., Sarda, Tejashri J., Bhanage, Bhalchandra M.
• Format: Article
• Language: English
• Subjects: Crystal violet; Magnesium; Photodegradation; Solar energy; Zinc oxide
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2022.127075

The present work comprises the report of sunlight driven rapid photodegradation of Crystal Violet using Magnesium doped (MgxZn1-xO (x = 0, 1, 2.5, 5%)) Zinc oxide nanostructures prepared. 5% Mg–ZnO showed exceptional photocatalytic performance with among the highest kinetic rate constant (0.1699 min−1) than previously reported photocatalysts for this reaction. At the optimized condition, 30 mg of 5% Mg–ZnO exhibited >85% photodegradation efficiency of 10 ppm of 50 mL of crystal violet in 15 min (97% in 25 min) without any additives or oxidizing agents and effectively endures 4 radical scavengers. These nanoparticles also displayed excellent reusability with ∼75% at 7th cycle (regeneration after 5th cycle). [Display omitted] •Simple and reproducible wet chemical synthesis strategy for Mg doped ZnO.•>85% sunlight driven photodegradation of CV dye in 15 min using 5% Mg–ZnO.•Exceptionally high k = 0.1699 min−1 for 5% Mg–ZnO under optimized parameters.•A robust photocatalytic system negligibly affected by 4 tested radical scavengers.•Excellent reusability of 5% Mg–ZnO with ∼75% degradation of CV up to 7th cycle.