Sustainable fabrication of Ti alloy-coated NiO/Ag bimetallic nanoparticles incorporated with Calotropis gigantea fiber: A dual-purpose material for efficient environmental pollutant degradation and advanced biomedical applications

This present work describes the fabrication of NiO NPs, Ag NPs, NiO/Ag, and NiO/Ag /CGF ternary nanocomposite through co-precipitation technique. The characterisation techniques confirm the formation of composites with specific structural, functional, morphological, and molecular interaction properties of the ternary nanocomposites and confirms the formation of highly crystalline phase pure compounds. The electrodeposition technique was utilized to fabricate a coating on the surface of the Ti alloy implant and the increased corrosion resistance of the coating was measured in SBF solution. The pathogenic bacterial strains confirms that the proposed composite is potentially resistance to E. coli than the S. aureus. Likewise, the cytotoxicity analysis of the NiO/Ag/CGF ternary nanocomposite investigated through the MTT assay indicates that the prepared ternary nanocomposite has high affinity in the cell growth. The photocatalytic analysis against the mixture of methylene blue (MB) and methyl orange (MO) dyes indicates a higher adsorption behaviour to the MB than the MO dye. Hence, the as fabricated NiO/Ag/CGF ternary nanocomposite will be an effective coating material for biomedical implant and also for water purification applications.