Natural fuels assisted synthesis of pure and Ag substituted CoFe2O4 CuFe2O4 magnetic nanoparticles for biomedical applications

Abstract

The speech of Nobel laureate Richard Feynman titled There s plenty of room at the bottom marked the modern history of nanotechnology in 1959 The term nano of Greek origin means dwarf A nanometer nm is one billionth of a meter or 10 9 m Japanese scientist Norio Taniguchi used the term nanotechnology for the first time in a 1974 paper Nanotechnology newlineis defined as the design characterization production and application of structures devices and systems by controlling shape and size at nanometer scale When the dimensions of materials are reduced to nanoscale they demonstrate unique properties which are different from those of their bulk counterparts Obviously the ferrite nanoparticles NPs in nano scale newlinecan be produced by bottom up nanotechnology approach known as wet chemical methods such as co precipitation sol gel hydrothermal system etc Among these various methods in recent years mainly because of its inexpensive precursors short preparation time modest heating and relatively simple manipulation auto combustion synthesis takes considerable attention in fabricating homogeneous non agglomerated multi component ferrite particles newlineIn other words it is an easy and fast process which yields high purity homogeneous crystalline oxides in a short time with less energy The surface area size distribution and agglomeration of the NPs in the final product mainly depend on the flame temperature which in turn is related to nature of fuel and fuel to oxidant ratio newline newline