International Journal of Nano Dimension (Int. J. Nano Dimens.) Evaluation of phytochemicals, anti-oxidative properties and synergistic effects of green fabricated AuNPs-GrNs nanocomposites against selected Gram-positive and Gram-negative bacterial strains Volume 15 (2024) Issue 3, June 2024 2024 04 16 Evaluation of phytochemicals, anti-oxidative properties and synergistic effects of green fabricated AuNPs-GrNs nanocomposites against selected Gram-positive and Gram-negative bacterial strains 10.57647/j.ijnd.2024.1503.19 EN Sarita Yadav Department of Zoology, Maharshi Dayanand University, Haryana, India 0000-0002-8689-3932 Neetu Sehrawat Department of Zoology, Maharshi Dayanand University, Haryana, India 0009-0008-7229-2002 Minakshi Sharma Department of Zoology, Maharshi Dayanand University, Haryana, India 0000-0003-2926-9671 Journal Article 2024 04 16   Graphene and its derivatives are biocompatible, have a huge surface area, good resistance capacity and thermal conductivity. The unique features listed above are extremely important for killing microorganisms. This paper presents the fabrication of gold nanoparticles (AuNPs), graphene nanosheets (GrNs), and GrNs functionalized with AuNPs by a novel eco-friendly method. These GrNs and AuNPs were fabricated by using leaf extracts of Syzygium cumini and Passiflora edulis respectively, as novel reducing agents. AuNPs were successfully embedded on fabricated GrNs. Embedded AuNPs increased the surface area, sensitivity, and conductivity of GrNs and acted as nano-spacers between sheets. Energy dispersive X-ray showed the Au, C, and O elemental composition in AuNPs-GrNs nanocomposite that confirmed the formation of the nanocomposite. A comparative antibacterial activity of AuNPs, GrNs, and AuNPs-GrNs nanocomposite was studied against Gram+ve (Bacillus subtilis, Staphylococcus aureus), and Gram-ve (Escherichia coli, Pseudomonas aeruginosa) bacterial strains.