Synergy of the LaVO₄/h-BN Nanocomposite: A Highly Active Electrocatalyst for the Rapid Analysis of Carbendazim

Abstract

In the field of agriculture fungicides are vital, providing the most important ecosystem service for food production. The widespread use of these chemicals can significantly lead to various ecotoxicological threats with adverse effects, such as environmental changes, microbial resistance, and phytotoxicity. Electrochemical sensors offer enormous potential for the identification and monitoring of hazardous substances in accordance with their constructive characteristics, namely, precision, accuracy, sensitivity, and selectivity, over traditional analytical techniques. Here, we thus report the synthesis of the lanthanum vanadate/hexagonal boron nitride (LaV/h-BN) composite for the electrochemical determination of carbendazim (CZ), which is a widely used fungicide for disease management with critical risks associated with its overexposure. The combination of LaV and h-BN accelerates the formation of active sites, facilitating faster charge transfer and higher electronic conductivity. The synergistic effects greatly improve the preference of the modified electrode with increased sensitivity, a lower limit of detection, and wide linear responses toward CZ detection. The existence of variable oxidation states in the orthovanadate together with the unique properties of h-BN mark LaV/h-BN as an advanced material for specific applications in the family of rare-earth metal orthovanadate. Also, the deep eutectic solvent-assisted synthesis of the material creates an environmentally efficient system with reduced energy requisites to allow for applications in effective environmental monitoring.

Interfacial Superassembly of Mo2C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide

“…The limit of detection (LOD) and sensitivity are calculated using a standard formula, − and the LOD value is found to be 0.2 nM, 95.71 μA μM –1 cm –2 which is lower LOD and higher sensitivity when compared to previously reported literature for CBZ sensing based on different electrochemical platforms (Table ). − The enhanced activity of Mo 2 C@NiMn-LDH can be ascribed to the following reasons: (i) synergy effect between NiMn-LDH and Mo 2 C, (ii) increased electronic conductivity, and (iii) electron transfer due to morphological encapsulation, and hence, these results appropriately identify that Mo 2 C@NiMn-LDH/SPCE has an efficient capability for the determination of CBZ.…”

Synthesis of Water-Soluble Cadmium Selenide/Zinc Sulfide Quantum Dots on Functionalized Multiwalled Carbon Nanotubes for Efficient Covalent Synergism in Determining Environmental Hazardous Phenolic Compounds

“…The pink bars represent the relative peak current obtained at 4-AP potential; whereas the green bars represent the relative peak current obtained at 4-NP potential. The modified electrode has shown less than 5% of change in current before and after the addition of the interferents, but the current for 4-AP and 4-NP is constant throughout . This shows the low detection potential of the CdSe/ZnS QDs @ f -MWCNT/GCE electrode toward different analytes, and it is evident that the proposed sensor has specific selectivity toward 4-AP and 4-NP.…”

Surfactant-Assisted Synthesis of Praseodymium Orthovanadate Nanofiber-Supported NiFe-Layered Double Hydroxide Bifunctional Catalyst: The Electrochemical Detection and Degradation of Diphenylamine

“…REVOs are used as electrode modifiers owing to their high energy density, wide range of oxidation states, and layered structures. 5 According to the dated research, CeVO 4 , 6,7 LaVO 4 , 8 LuVO 4 , 9 SmVO 4 , 10 EuVO 4 , 11,12 HoVO 4 , 13 and YVO 4 14,15 are recog-nized as active electrode materials in various electrochemical applications due to their outstanding catalytic activity, structural stability, and optimal band gaps. 16 In general, praseodymium (Pr 3+ ) is one of the potential rare-earth elements, which displays outstanding modes of electronic transitions and has a unique structure due to the presence of intestinal vacant space.…”

“…Nanostructured binary-transition metal oxides (BTMOs) have sparked renewed interest among researchers for their applications in lithium-ion batteries, electrochemical sensors, energy storage devices, gas sensors and photocatalytic reactions. , BTMOs have a variety of unique properties due to their improved physiochemical properties, such as exceptional conductivity, redox stability, structural durability, wide band gap, good chemical stability, well-defined morphology, accelerated electron transfer kinetics, low mass density, better dispersion, and increased surface permeability. , Rare-earth metal orthovanadates (REVOs), among the various BTMOs, have attractive possibilities for electrochemical sensors. REVOs are used as electrode modifiers owing to their high energy density, wide range of oxidation states, and layered structures . According to the dated research, CeVO 4 , , LaVO 4 , LuVO 4 , SmVO 4 , EuVO 4 , , HoVO 4 , and YVO 4 , are recognized as active electrode materials in various electrochemical applications due to their outstanding catalytic activity, structural stability, and optimal band gaps .…”