Structural and Optical Properties for ZnO Nanoparticles for Antibacterial Application
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Abstract
In this research, ZnO nanoparticles were prepared by pulsed laser ablation in liquid (PLAL) technique. The X-Ray diffraction (XRD) test was used to find out the crystal structure of ZnO and its crystal size, the result is that the creation of ZnO NPs has a polycrystalline structure of hexagonal phases. As for an atomic force microscopy (AFM) analysis, AFM 3D pictures show that the surface roughness are increase with increase the laser energy. The UV-visible device test was conducted to determine the optical properties, and it was revealed that the maximum absorption appears to occur at (400 nm). By changing the laser energy discovered that when laser intensity increased, the ZnO NPs' bandgap decreases. ZnO has been used in antibacterial applications, The result of laser manufactured ZnO Nanoparticles was verified for its antibacterial activities at gram- positive (Staphylococcus aureus).
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