Zinc Phosphate-Incorporated Niobium Carbide as an Effective Electrocatalyst for Ultrasensitive and Selective Monitoring of Monoamine Neurotransmitter

Abstract

The earth-abundant, cost-effective, easier preparation of zinc phosphate eases its diverse implications in recent applications. We have synthesized two-dimensional niobium carbide (NbC)-encapsulated zinc phosphate Zn2P2O7. The physicochemical characteristics were determined, which demonstrate pure crystallinity and good integration of the composite samples. To improve and develop a sustainable environment, the Zn2P2O7/NbC composite will be an efficient material. The detection of pharmaceutical compounds is highly preferable in clinical approaches. The importance of serotonin (SER) has empowered sensor development with the fabricated Zn2P2O7-based electrode. The synergistic action prevailing in the composite material endowed the active sites with improved electrocatalytic activity. The increased addition of SER was acquired with two linear ranges from 0.019 to 563.68 μM. The lower detection limit was obtained as 0.0055 μM toward the exposed SER addition at a lower concentration, and the sensitivity was about 7.72 μA μM–1 cm–2. Analyses of other parameters such as repeatability, reproducibility, and stability indicate the excellent performance of the electrode. The presence of SER in human urine and blood serum samples can be identified very easily, and hence, analysis of real samples was performed. The as-obtained recovery results stated the excellent performance of the fabricated sensor.

ZnO/B-g-C3N4 Nanoplatelet/Nanosheet Heterostructures for the Electrochemical Detection of Metol in Real Sample Analysis

“…The standard Zn 2p core-level binding energy spectrum is displayed in Figure C. The typical deconvolved Gaussian’s spectrum of the 2p 3/2 and 2p 1/2 are fitted at signals of 1021.1 and 1044.1 eV, respectively, , which confirming ZnO had successfully incorporated.…”

Electrostatic Self Assembly of Metal‐Free Hexagonal Boron Nitride/Protonated Carbon Nitride (h‐BN/PCN) Nanohybrid: A Synergistically Upgraded 2D/2D Sustainable Electrocatalyst for Sulfamethazine Identification

“…To ensure the validity of our proposed sensor system, analytical characteristics such as the linear range of operation on SMZ identification, the threshold of identification, and sensor sensitivities were determined. The following equation (eq 7) calculates the limit of detection (LOD) of the proposed h‐BN/PCN modified GCE towards SMZ [39] $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {\bf L O D}={\bf \ }{{3{\bf S D}}\over{{\bf s}}}\hfill\cr}}$$$ …”

“…The following equation (eq 7) calculates the limit of detection (LOD) of the proposed h-BN/PCN modified GCE towards SMZ. [39] LOD ¼ 3SD s (7) Where "s" is the calibration curve's slope and "SD" represents standard deviations of the blank.…”

Design and fabrication of La-based perovskites incorporated with functionalized carbon nanofibers for the electrochemical detection of roxarsone in water and food samples

“…This arises due to the ionic strength of the electrolyte, together with the simultaneous interaction occurring at the composite surface. 44 Moreover, the obtained results showed that LMO/f-CNF/GCE has a precise reduction peak current response for each addition of RSN, and that it has strong electrochemical reactivity towards RSN. According to the results, the limit of detection (LOD) was calculated using the following formula: 45 LOD ¼ 3 Â ðstandard deviationÞ slope…”