Rapid sustainable synthesis of Mn2O3, CuO, and binary CuO/Mn2O3 nanoparticles using continuous laser diode for enhanced antibacterial strategy against resistant pathogens

Substantial health issues have recently resulted from the sharp rise of antibiotic-resistant bacteria. Researchers are looking for substitute antimicrobial agents to manage or stop pathogen-induced illnesses. Effective antibacterial drugs are developed using a variety of techniques, and nanoscale is definitely a promising substance in this regard. In this work, it was provided a unique quick sustainable synthesis approach of Mn 2 O 3, CuO and CuO/Mn 2 O 3 using a continuous laser diode (CLD). Manganese(II) acetate, deionized water|(DW), and sodium hydroxide (NaOH) are used to prepare a gelatinous solution of Manganese(II) hydroxide Mn(OH) 2 . A gelatinous solution of Mn(OH) 2 was poured into a circular plate and then it was bombarded by a continuous laser diode. A black powder of Mn 2 O 3 nanoparticles was obtained. The nanoparticles were characterized using various techniques such as Scanning electron microscope (SEM), transmitted electron microscope (TEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). XRD results of the MnO 2 nanoparticles show a high degree of crystallinity. The average particle size of 38 [nm] can be observed for samples prepared at time 30 min was determined by SEM and 30 nm by TEM. Mn 2 O 3, CuO and CuO/Mn 2 O 3 nanoparticles were used for decontamination and inactivation of Escherichia coli , Staphylococcus, pseudomonas and Candid strain clinical isolates as an alternative sterilization method. The Antibacterial activity shows that Mn 2 O 3 has a minimum activity while CuO and CuO/Mn 2 O 3 are more influential. The conclusion considered a new direct way to synthesize of Mn 2 O 3, CuO, and CuO/Mn 2 O 3 nanoparticles that is employed in many scientific applications.