Two-Dimensional Copper Tungstate Nanosheets: Application toward the Electrochemical Detection of Mesalazine

Abstract

The transition metal tungstates have attracted and gained much interest in recent years because of the excellent electrocatalytic properties. Herein, we have explored the electrochemical activity of a copper tungstate nanosheet (CuW NSs) modified glassy carbon electrode (CuW NSs/GC electrode) toward the detection of the anti-inflammatory drug mesalazine (MSA). The successful formation of CuW NSs was concluded from different analytical and spectroscopic methods. The CuW NSs modified GC electrode demonstrated superior electrocatalytic activity toward the MSA detection with a lower peak potential at +0.33 V. The constructed electrochemical sensor for the detection of MSA showed a good sensitivity (1.2 μA μM–1 cm–2), wide working range (0.005–367 μM), and trace level detection limit (0.0012 μM). Moreover, it is worth noting that the CuW NSs not only enhaced activity but also promoted the electron transfer rate. The proposed sensor was evaluated for its real-time applications to the detection of MSA in human urine samples, and in good satisfactory results were obtained.

Zinc Manganate: Synthesis, Characterization, and Electrochemical Application toward Flufenamic Acid Detection

“…Indeed, there is still a need for copiousness of efforts to attempt to enhance the electrocatalytic performance of the POC technology. Electrode materials and structures have powerfully influenced their catalytic performance. , Accordingly, the binary-metal-oxide-based compounds have received tremendous attention and have been utilized in a variety of electrochemical applications, such as energy storage, conversion, and sensor. − Among these, spinel oxides (AB 2 O 4 ) possess a number of advantages, such as a robust structure with tunable physicochemical characteristics, good stability, facile synthesis, high surface area, rich redox chemistry, high chemical stability, and numerous reactive sites. − The 3d-transition-metal-based AB 2 O 4 has been explored as a promising electrode for electrochemical sensors …”

“…catalytic performance. 31,32 Accordingly, the binary-metaloxide-based compounds have received tremendous attention and have been utilized in a variety of electrochemical applications, such as energy storage, conversion, and sensor. 33−36 Among these, spinel oxides (AB 2 O 4 ) possess a number of advantages, such as a robust structure with tunable physicochemical characteristics, good stability, facile synthesis, high surface area, rich redox chemistry, high chemical stability, and numerous reactive sites.…”

Hybrid Nanocomposite Platform, Based on Carbon Nanotubes and Poly(Methylene Blue) Redox Polymer Synthesized in Ethaline Deep Eutectic Solvent for Electrochemical Determination of 5-Aminosalicylic Acid

“…The CNT/PMB DES /GCE sensor showed an overall superior performance to those found in the literature, presenting a significantly lower detection limit with high sensitivity over a wide linear dynamic range. Although the sensor based on CuW NSs/GCE [ 45 ] had a wider working range and demonstrated a lower LOD (1.2 nM), the proposed voltammetric sensors in this work outclass it in terms of sensitivity (1.20 μA μM –1 cm –2 ) and peak potential value (+0.33 V). Additionally, the analysis time of our voltammetric sensors is ca.…”

Cu/CuxO@C nanocomposites as efficient electrodes for high-performance supercapacitor devices

“…Considering these factors, our attention has been focused on copper–carbon systems. Copper is one of the most common materials in electronic components due to its excellent electrical conductivity (5.7 × 10 8 S m −1 ) and low cost, 27–29 as are carbon-based materials such as carbon nanofibers, carbon nanotubes, graphene and so forth. 30–32 Most industries use the electrolysis method to refine and smelt copper, resulting in dense-state copper with an ungenerous porosity to accommodate electrolyte ions.…”