The Synthesis of Bimetallic Nanoparticles Al–Cu (Aluminum–Copper) via a Chemical Redox Route and Examination of Its Antimicrobial Activity and Dye Degradation

Abstract

Bimetallic nanoparticles have emerged as highly efficient and versatile materials for a wide range of industrial applications, such as chemical manufacturing, environmental remediation, anticorrosion, electronic and sensor technology, and biomedical applications such as cancer therapy, medical imaging, and antimicrobial agents. In the present study, aluminum–copper (Al–Cu) bimetallic nanoparticles were successfully synthesized via a chemical redox route. The synthesized nanoparticles were comprehensively characterized using UV–vis spectroscopy, FTIR, SEM, and zeta potential analysis. The UV–vis spectra confirmed alloy formation, while FTIR analysis indicated the presence of functional groups responsible for reduction and stabilization. SEM analysis revealed a predominantly spherical morphology, and the zeta potential value of 30 mV indicated good stability of the nanoparticles. The biological and environmental applications of the synthesized Al–Cu nanoparticles were evaluated. The nanoparticles exhibited significant antimicrobial activity, producing a 10 mm zone of inhibition against both Pseudomonas aeruginosa and Staphylococcus aureus . In addition, they demonstrated 71% degradation of methylene blue within 24 h, highlighting their potential for wastewater treatment. Furthermore, seed germination studies indicated a positive influence on plant growth, suggesting agricultural applications. Overall, the study highlights the multifunctional potential of Al–Cu bimetallic nanoparticles for antimicrobial, environmental, and agricultural applications.