Al-ZnO beaker was filled with distilled water and ZnSO 4 .7H 2 O was dissolved to create a 0.5 M solution that was used to make ZnO NP. The solution was vigorously stirred with a magnetic stirrer while a 0.5 M NaOH solution was added drop by drop to adjust the pH of the mixture. Concurrent additions of urea, ethylene glycol, and preprocessed Aloe barbadensis miller leaf extract were made to the mixture. Zn (SO4) (OH) 6 .0.5H 2 O was generated by stirring the mixture for four to five hours at 70 °C. After filtering, the resulting white precipitate was collected and rinsed four times with distilled water and absolute ethanol.