Abstract
Thermogravimetric Analysis (TGA) and Differential Thermal Analysis (DTA) were used to assess the thermal stability of bio-synthesized MgO nanoparticles (MgONPs). TGA revealed that Rubber leaf MgONPs had a multi-step degradation process: initial weight loss at 220°C-325°C, significant loss at 330°C-625°C, with 24.36% residue. Palm Oil leaf (POLE) MgONPs showed initial loss at 300°C-460°C, further decomposition up to 575°C, and 25.5% residue. Awolowo leaf MgONPs had a single degradation phase from 480°C to 790°C, with 28.9% residue, indicating higher stability. DTA analysis showed exothermic peaks at 240°C, 360°C, and 600°C for Rubber leaf MgONPs; 470°C and 560°C for POLE; and 590°C and 660°C for Awolowo leaf MgONPs, highlighting Awolowo's superior thermal stability