The preparation of the artemisinin solution and subsequent UV-Vis measurements were carried out with meticulous care. Artemisinin was measured using a UV-Vis spectrophotometer KASVI. To detect artemisinin in the adsorption system's supernatant, a standard curve was created from 19.94 mg/L to 99.7 mg/L in an artemisinin/ethanol solution, and another standard curve from 0.05 mg/L to 40 mg/L in an artemisinin/ethanol solution. PBS and NaOH were added to achieve similar conditions to the essays in a proportion of 2:1:5 (v/v/v), ensuring the accuracy of our measurements and corresponding to the delivery process in PBS at pH 7.4.