Rational Design of Highly Efficient One‐pot Synthesis of Ternary PtNiCo/FTO Nanocatalyst for Hydroquinone and Catechol Sensing

Abstract

In this work, we present a simple and efficient method for preparation of widely dispersed PtNiCo nanocatalyst on FTO without the use of any heavy complex structure. The proposed nanocatalyst enhances the chemical interaction of PtNiCo/FTO and increases its catalytic activity, which was used for electrochemical sensing of catechol and hydroquinone. The surface morphology was characterized by TEM, HRTEM, and XRD. The size of the PtNiCo/FTO octahedrons nanocatalyst was about 0.35–4 nm. Gradual increase of concentration exhibited linearity in oxidation peak response up to 1100 μM with a low detection limit of 0.79 μM for HQ and 1.05 μM for CC. The sensitivity is 1035 μAmM−1 cm−2 for catechol and 1197 μAmM−1 cm−2 for hydroquinone. The prepared nanomaterial/sensor applied to real water samples with good reproducibility (98–99 %).

Mixed Silane‐based Self‐assembled Monolayers Deposited on Fluorine Doped Tin Oxide as Model System for Development of Biosensors for Toxin Detection

“…Phospholipid membranes can be used as a convenient substrate for immobilizing photosensitive materials that would absorb light and generate photocurrent [2, 3]. Moreover, development of new biomimetic phospholipid bilayer sensing techniques for proteins/peptides/toxins is necessary because higher concentrations of proteins such as beta‐amyloid could lead to serious illness [4] and monitoring the amounts of other bodily proteins could help prevent life threatening conditions [5–10]. Therefore, in this work we aimed to form solid supported bilayer membranes on transparent semiconducting thin film electrodes, in particular fluorine doped tin oxide (FTO), as model systems for development of biosensors for toxin detection.…”

Enhanced Sensitive Electrochemical Sensor for Simultaneous Catechol and Hydroquinone Detection by Using Ultrasmall Ternary Pt‐based Nanomaterial

“…The pure Pt has low binding energy as comparied to Pt 4f of PtNiCu nanomaterial. The electrochemical performance of PtNiCu catalyst was improved due to the change in binding energy cause by the shift of the d‐band center relative to Fermi level, as mentioned previously in litrature [24, 27, 28]. The XPS spectra of PtNi nanomaterial was also analyzed by similar manner and mention in Figure SI 3 having complete spectra of PtNi, with magnified Pt 4 f and Ni 2p spectrum.…”

Graphitic Carbon-Coated PtCoNi Alloys Supported on N-Doped Porous Carbon Nanoflakes for Sensitive Detection of Bisphenol A

“…Figure B displays the XRD pattern of the G-PtCoNi/N-PCFs. Obviously, the strong diffraction peaks at 42.24, 49.40, 72.50, and 87.78° are attributed to the (111), (200), (220), and (222) planes of the face-centered cubic PtCoNi alloy, , respectively. The weak ones at 44.14 and 51.54° indicate the existence of the CoNi particles, which coincidently show up between those of Co (JCPDS-15-0806) and Ni (JCPDS-04-0850).…”