A new way in nanosensors: Gold nanorods for sensing of Fe(III) ions in aqueous media

Seed mediated method using cetyltrimethylammonium bromide (CTAB) as surfactant has been developed to synthesize gold nanorods (Au NRs) which behave as an excellent nanosensor with limit of detection of Fe3 + ions 100 ppb in aqueous media. This paper also shows stronger surface-enhanced Raman scattering (SERS) activity of Au NRs which has been attributed to the presence of {110} faces that exhibits strong adsorption energies for adsorbed molecules.