Synthesis of ZnO nanoparticles mediated by natural products of Acanthus senniileaf extract for electrochemical sensing and photocatalytic applications: a comparative study of volume ratios

Determination of various chemical nutrients present within food samples using green nanomodifed carbon paste working electrode (GNM-CPWE) is a novel and cost-effective technique. In addition, wastewater treatment in the presence of high surface area green nanocatalysts attracts researchers worldwide. In the present study, zinc oxide nanoparticles (ZnO NPs) were synthesized by using Acanthus sennii leaf extract within three volume ratios as 2:3 (40 mL precursor: 60 mL extract), 1:1 (50 mL precursor: 50 mL extract), and 3:2 (60 mL precursor: 40 mL extract). Electrochemical sensing potential of ZnO (1:1) modified CPWE toward AA was found to be more effective, with a best detection limit of 0.200 mM as compared to the counterpart ratios. This might be due to its small D and enhanced cata-lytic property. The percent degradation efficiency of ZnO (1:1) toward AO88 dye was calculated to be 62.6%. The enhanced degradation potential of ZnO (1:1) might be attributed due to its optical property and relatively small D value as compared  to the counterpart ratios.