Open AccessPreparation and characterization of colloidal Au-ZnO Nanocomposite via laser ablation in deionized water and study their antioxidant activity
Author(s) -
Taha M. Rashid,
Majid S Jabi,
Uday M. Nayef
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1795/1/012057
Subject(s) - materials science , nanocomposite , surface plasmon resonance , nanoparticle , laser , laser ablation , absorption (acoustics) , colloid , absorption spectroscopy , fluence , laser ablation synthesis in solution , chemical engineering , analytical chemistry (journal) , nanotechnology , optics , chemistry , laser power scaling , x ray laser , organic chemistry , composite material , physics , engineering
A synthesis is carried out with Au-ZnO nanoparticles (NPs), using fundamental laser Nd:YAG (1064 nm) of Au and ZnO colloidal solution, with the metal objectives in deionized water being extracted, accompanied by laser radiation a second harmonic Laser 532nm with the mixed colloidal solution, The UV-visible display the Au nanoparticle peak at 525nm, and the ZnO peak at 415nm. The Au-ZnO NPs show a shift of the ZnO absorption at 390nm, which is excited, and a change in the Au absorption at 530nm, as the Au NPs plasmon resonance is transmitted through an interface charge. The optical band gaps of the ZnO, Au and Au-ZnO NPs are increased with laser fluence up to 13.8 J/cm 2 . The antioxidant activities of prepared nanoparticles were measured using DPPH assay. The results showed the ability to scavenging of free radicals. Taken together, the results of this study demonstrated that the Au-ZnO nanocomposite could be used in future for therapeutic purposes.