Synthesis of silver–platinum nanoferns substrates used in surface-enhanced Raman spectroscopy sensors to detect creatinine

Creatinine is one of the most commonly used bio markers of renal function. This paper reports a study on detection of creatinine using silver–platinum (AgPt) nanoferns substrates to fabricate a surface-enhanced Raman spectroscopy (SERS) sensor. The AgPt nanoferns were synthesized by liquid phase deposition (LPD) where the morphology structures and thickness of the AgPt nanoferns were controlled by varying the concentration of formic acid which was acting as the reducing agent. We have obtained four different nanoferns structures and thicknesses. This study showed that the AgPt nanoferns structure synthesized with 40 mM formic acid give the highest Raman peak intensity for a 0.05 M creatinine sample.