Patra N.Taviti A.C.Sahoo A.Pal A.Beuria T.K.Behera A.Patra S.2025-02-1720175http://dx.doi.org/10.1039/c7ra05493ahttps://idr.iitbbs.ac.in/handle/2008/1595A facile synthetic route and growth mechanism of heterobimetallic cubical nanoparticles Au@AgCl and Ag@AgCl@Au have been developed using Muntingia calabura flower extract. The formation of nanoparticles has been confirmed through UV-Vis, powder X-ray diffraction and electron microscopy. The elemental composition of the nanoparticles has been evidenced by EDS analysis. Combing the UV-Vis spectral analysis and powder X-ray diffraction studies, the composition of bimetallic nanoparticles are assigned as Au@AgClNP and Ag@AgCl@AuNP. The prepared nanoparticles display good antibacterial activity which is comparable to standard kanamycin and ampicillin. � 2017 The Royal Society of Chemistry.enArticle