The Antibacterial Activities of Copper Oxide Nanoparticles Synthesized Using Laser Ablation in Different Surfactants against Streptococcus mutans

Copper oxide nanoparticles (CuO NPs) were synthesised with laser ablation of a copper sheet immersed in deionized water (DW), cetrimonium bromide (CTAB), and sodium dodecyl sulphate (SDS), respectively. The target was irradiated pulsed Nd: YAG at 1064 nm, 600 mJ, pulse duration 10 ns, repetition rate 5 Hz. CuO NPs colloidal analyzed using UV–Vis spectroscopy, the Fourier transform infrared (FTIR) spectrometer, zeta potential (ZP), X-ray diffraction (XRD), transmission electron microscope (TEM) field emission scanning microscopy (FESEM). absorption spectra showed peaks 214, 215 220 nm low-intensity 645, 650 680 for SDS, CTAB DW, NPs’ results are (−21.6, 1.2, 80 mV) negatively, neutrally, positively charged CTAB, XRD pattern revealed presence phase planes (110) (111), (20-2) (11-1). TEM images nearly spherical NPs, sizes ranging from 10–90, 10–50, 10–210 mixed SDS FESEM all synthesized samples illustrate formation nanostructure large particles observable. tested antibacterial activity against Streptococcus mutans by well diffusion method. In this method, prepared DW concentration 200 μg/mL greater inhibition zone mutans.