Rodiah, S., Aprilia, R. and Ariesta, N. 2022. Utilization Waste Materials to Synthesize Nano Al2O3-CaO Photocatalyst using Infused Red Guava Leaves (Psidium Guajava L.). Al-Kimia. 10, 2 (Dec. 2022). DOI:https://doi.org/10.24252/al-kimia.v10i2.33481.