1. Among various delafossites, AgFeO2 is attractive for scientific research and applications interests [4–6].
2. One of the important and attractive features of AgFeO2 is their super-magnetic properties [7].
3. Generally, colloidal iron oxide particles have been used intensively for biomedicine
[8–14] and biotechnology [15,16].
4. Moreover, functionalization of Fe3O4 with Au and Ag has demonstrated vast potential in catalysis and biotechnological applications such as protein separation [17],
cancer diagnosis [18], biosensors and bioactuators [19].
5. The prime reason is due to multifunctionality of these new composites.