Development of Pulse/Direct Electrodeposition, Characterisation and Mineralised Antibacterial Activity of Platinum Coatings on SS304

The current investigation meticulously tracks the advancement, metallurgical delineation and deployment of Platinum 5Q solution onto the SS304 matrix, harnessing its mineralised prowess as a potent antibacterial agent. Pulsed Electrodeposition (PC) with platinum bath solution was used to develop coatings on a substrate with different duty cycle PC 25%, 50% and 75% and Direct Current (DC) source as a comparative study for the electrodeposition performance against the bacterial activities. Scanning Electron Microscope (SEM) and Atomic Force Microscope (AFM) were used to observe the newly developed platinum on the substrate. Utilising the broth culture and agar petri plate technique, the antibacterial activity of Pt using DC and PC methods was tested against Gram-negative E. coli and Gram-positive bacteria such as Staphylococcus saprophytieus, Bacillus stilis and Enterococcus faecalis. Platinum metal ions activity was compared to platinum solution and platinum-coated samples in terms of mineralised efficacy. The platinum coating obtained from PC 75% has significant antimicrobial activity against Enterococcus faecalis microorganisms experienced, according to the findings. As the concentration of platinum metal ions increased, so did the antibacterial activity. The study’s discoveries indicate that electrodeposited platinum metal ions hold promise as prospective mineralised antibacterial defenders in the times ahead.