Synthesis of two-dimensional nanosheet like samarium molybdate with abundant active sites: real-time carbendazimin analysis in environmental samples

The design and construction of efficient nanostructure-based electrocatalyst are the keys to advance in the field of electrochemical sensors. Herein, we synthesize the samarium molybdate (SmM) on a large scale via a straightforward approach. The structure of the as-prepared SmM was investigated using the in-depth electron microscopic and spectroscopic techniques. The SmM modified electrode was electrochemically studied by different voltammetry methods towards the quantitative detection of carbendazim (CDM). This SmM-based electrochemical sensor provides the high activity towards the CDM sensing with a significant decrease in oxidation potential owing to its good conductivity, high carrier mobility and large surface area. The CV results show that the electrode modified with SmM possesses a 1.97-fold increase in the current response compared to the unmodified electrode. Noteworthy, the designed sensor exhibits a dynamic working range of 0.01-22 mu M, a trace level detection of 1.0 nM and good selectivity for the practical CDM sensing. The CDM modified electrode has been practically applied in the determination of CDM in environmental samples with satisfactory results.