Individual and Simultaneous Electrochemical Detection of Allura Red and Acid Blue 9 in Food Samples Using a Novel La 2 YCrO 6 Double Perovskite Decorated on HLNTs as an Electrocatalyst.

The present study involved the synthesis of La 2 YCrO 6 double perovskites using a sol-gel approach. Additionally, a sonication method was implemented to prepare La 2 YCrO 6 double perovskites decorated on halloysites (La 2 YCrO 6 /HLNTs). The La 2 YCrO 6 /HLNTs exhibited remarkable conductivity, electrocatalytic activity, and rapid electron transfer. It is imperative to possess these characteristics when overseeing the concurrent identification of Allura red (AR) and acid blue 9 (AB) in food samples. The development of the La 2 YCrO 6 /HLNTs was verified through the utilization of diverse approaches for structural and morphological characterization. The electrochemical techniques were employed to evaluate the analytical techniques of La 2 YCrO 6 /HLNTs. Impressively, the La 2 YCrO 6 /HLNTs demonstrated exceptional sensitivity, yielding the lowest detection limit for AR at 8.99 nM and AB at 5.14 nM. Additionally, the linear concentration range was 10-120 nM (AR and AB). The sensor that was developed exhibited remarkable selectivity, and the feasibility of AR and AB in the food sample was effectively monitored, resulting in satisfactory recoveries.