The relentless exploitation of natural resources has intensified the search for alternative and sustainable energy solutions.In this context, Prussian Blue (PB) has emerged as a promising material for energy-related applications.In this work, a facile in situ adsorption-based strategy was employed for the synthesis of Prussian Blue nanoparticles (PB NPs) with integrated bifunctionality.The approach utilized an N-3-(trimethoxysilyl)propyl diethylenetriamine (TPDT) silicate sol-gel (SSG) matrix, followed by the electrodeposition of gold nanoparticles (Au NPs) onto indium tin oxide (ITO) electrodes, yielding a PB@Au nanocomposite (ITO/TPDT-PB/Au).The fabricated electrodes were comprehensively characterized using UV-visible spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), Xray photoelectron spectroscopy (XPS), and cyclic voltammetry.The functional applicability of the electrodes was investigated with respect to electrochromic and electrocatalytic performance.In situ spectro-electrochemical studies of ITO/TPDT-PB electrodes revealed pronounced electrochromic behavior, demonstrating their potential utility in smart window applications.Furthermore, the electrocatalytic activity of ITO/TPDT-PB and ITO/TPDT-PB/Au electrodes was evaluated using oxygen (O) and hydrogen peroxide (HO) reduction as model reactions.The synergistic integration of PB and Au nanoparticles in the ITO/TPDT-PB/Au electrode resulted in a significantly enhanced and selective electrocatalytic response toward HO reduction at -0.055 V, compared to O reduction at -0.283 V.These findings underscore the potential of PB@Au nanocomposites for advanced energy and environmental applications.
Tolani et al. (Fri,) studied this question.