are the predominant element. The analysis identified magnesium (Mg), silicon (Si), chlorine (Cl), sodium (Na), calcium (Ca), phosphorus (P), sulphur (S), iron (Fe), and titanium (Ti). The high aluminium and potassium content were expected, given that the synthesis process was specifically aimed at producing aluminium-potassium hybrid nanoparticles. The strong peak at 1.4 keV and 3.3 KeV are characteristic of aluminium and potassium, confirming their significant presence. The P. longifolia leaves extract used in the process, which contains organic materials and silica, likely acts as a reducing agent and a support matrix for the aluminium-potassium nanoparticles. The precursors used in the synthesis were the primary source of the aluminium and potassium observed in the final product. The presence of other elements, such as magnesium (11.26%), silicon (6.82%), and trace amounts of chlorine, sodium, calcium, phosphorus, and sulphur, can be linked to the natural composition of P. longifolia leaves and the synthesis process. Plants are known to contain various inorganic elements, aluminium and potassium in most cases are abundant in plants depending on the soil type and nutrient composition which may be the reason their remains in the residue after synthesis. Magnesium is present in P. longifolia and may also derive from additives or impurities during synthesis. The high silica content of P. longifolia, often up to 10-15%, accounts for the presence of silicon in the EDX results