Insights into the Design and Electrocatalytic Activity of Magnesium Aluminum Layered Double Hydroxides: Application to Nonenzymatic Catechol Sensor

Abstract

The design of an efficient electrocatalyst for effective trace level determinations of noxious synthetic and or biological compounds is the unceasingly noteworthy conceptual approach for rapid technology. In this work, we designed a magnesium-aluminum layered double hydroxides (Mg-Al LDHs) nanocatalyst and applied it to the electrocatalytic determination of an extremely carcinogenic catechol sensor. A coprecipitation method was employed for synthesizing the nanocatalyst, and the structure, porous nature, and morphology were confirmed by X-ray diffraction, Fourier transform infrared spectroscopy, N 2 adsorption−desorption isotherm, field emission-scanning electron microscopy, and transmission electron microscopy. The elemental composition was observed by energy dispersive X-ray analysis. The electrochemical studies were investigated with the help of cyclic voltammetry and differential pulse voltammetry techniques. The Mg-Al LDHs-based electrocatalyst was used to detect catechol by electrochemical measurements with different parameters. The proposed catechol sensor shows a wide dynamic range (0.007−200 μM) with a lower level of detection (2.3 nm) and sensitivity (3.57 μA μM −1 cm −2 ). The excellent sensor performance is attributed to the high surface area, fast electron transfer, more active sites, and excellent flexibility. This study depicts the proposed sensor as probable to practical in a scientific investigation. In addition, the modified electrode showed greater selectivity and was used in the detection of fatal contaminants in instant treatment strategies. Moreover, the Mg-Al LDHs confirmed auspicious real sample scrutiny with noteworthy retrieval outcomes in lake water samples which exposed improved consequences.

One-step synthesis of nanosilver embedding laser-induced graphene for H2O2 sensor

“…Sensors related to nanozymes have been applied to detect H 2 O 2 in cells [16] . However, non-enzymatic electrochemical H 2 O 2 sensor has the advantages of low cost, simple and fast, and is widely used in food and medical detection [17] , [18] , [19] , [20] , [21] , [22] .…”

Effect of Modification of a Laccase-Based Electrochemical Biosensor with Carbon Nanotubes on Signal Separation of Dihydroxybenzene Isomers

“…4 Among many known electrochemical methods for the quantification of CT and HQ, the use of biosensors for this purpose seems particularly interesting. 10,11 Biosensors are devices that integrate a biological or biologically derived element with an electronic element to produce a measurable analytical signal. 2 In the biosensor construction dedicated to the simultaneous CT and HQ determination, the enzyme laccase is very often used.…”

“…Therefore, for simultaneous quantitative determination of CT and HQ in environmental samples, electrochemical methods are very often used due to their low cost, fast response, and high sensitivity and selectivity . Among many known electrochemical methods for the quantification of CT and HQ, the use of biosensors for this purpose seems particularly interesting. , …”

“…Carbon nanomaterials are commonly used in electrochemical sensor and biosensor design to convert the biological recognition process into a measurable analytical signal because their use allows for increased electron transfer efficiency. , Moreover, CNTs are characterized by high mechanical strength and good stability, while lowering the potential of analyte excess in electrochemical measurements. − Our previous work has shown that CNTs can also be applicable in the construction of biosensors by the SPP technique. Laccase biosensors containing an interlayer of CNTs exhibit significantly better analytical performance in the quantification of both rutin and dopamine …”

Electrochemical Studies of Nanoflakes like ZnMnO3 Perovskites for the Determination of Priority Organic Pollutant N-hydroxysuccinimide

“…Among them, electrochemical methods have great attention in recent years towards biomolecules detection owing to their catalytic activity, cost-effectiveness, good sensitivity and excellent selectivity, stability, reproducibility etc. [3][4][5][6][7][8] Generally, unmodified electrodes have poor electrocatalytic performance, sensitivity and selectivity as compared to nanomaterials modified electrodes. 6,9,10 In this regard, many transition-metal oxides (TMOs) were utilized as electrode modifiers and anode materials for various electrochemical applications.…”