Figure 1.

Schematic representation of synthesis of AgPtNPs from O. basilicum. (1) Fresh leaves of O. basilicum were chopped finely (2) Then, the finely chopped leaves were used for the preparation of the exact on a hot plate at 80 °C (3) The prepared extract was then filtered through a Whatman filter paper No.1 (4) This extract was used for the preparation of the bimetallic NPs (5) At 80 °C, and under continuous shaking conditions in the presence of two noble metals, namely Silver nitrate and Potassium tetrachloroplatinate (II), synthesis of the NPs was carried out (6). The hypothesis was that the NPs formed would possess an inner core of silver and outer cover of platinum.