Synthesis of perovskite-type potassium niobate using deep eutectic solvents: A promising electrode material for detection of bisphenol A

This study demonstrates a hydrothermal method to prepare perovskite-type potassium niobate (KNbO3) through deep eutectic solvent (DES), which is further used as an electrode material for the determination of bisphenol A (BPA). The as-synthesized KNbO3 was systematically characterized by different microscopic and spectroscopic techniques. The KNbO3-modified electrode demonstrates excellent electrocatalytic activity for BPA compared to the pristine electrode. The enhanced performance of the proposed sensor is attributed to the numerous active sites, large electrochemical surface area, high electrical conductivity, and rapid electron transfer. The fabricated sensor shows a wide detection range (0.01-84.3 mu M), a low limit of detection (0.003 mu M), a high sensitivity (0.51 mu A mu M-1 cm(-2)), and good anti-interference abilities towards the BPA detection by linear sweep voltammetry method. Besides, it was successfully applied to determining BPA in food samples, demonstrating good practicability. This design paves a new way to fabricate efficient electrode material for various electrochemical applications using a DES medium.

Automated summary

This study presents a hydrothermal method to prepare perovskite-type potassium niobate (KNbO3) using a deep eutectic solvent (DES), which is utilized as an electrode material for the determination of bisphenol A (BPA). The synthesized KNbO3 is characterized by different microscopic and spectroscopic techniques. The KNbO3-modified electrode exhibits excellent electrocatalytic activity for BPA due to its active sites, large electrochemical surface area, high electrical conductivity, and rapid electron transfer. The fabricated sensor shows a wide detection range, low limit of detection, high sensitivity, and good anti-interference abilities, and it is successfully applied to determine BPA in food samples, demonstrating its practicality. This design provides a new approach to fabricate efficient electrode materials for various electrochemical applications using a DES medium.