Table 1.

Crystallite size and the lattice parameters of the α-MnO₂ nanorods produced with the Malus domestica apple peel extract (A6 and A8) and with the Vitis vinifera stems extract (V6 and V8).

Sample Name	Extract Used in the Synthesis	Calcination Temperature (°C)	Crystallite Size (Å )	a (Å)	b (Å)
A6	Malus domestica	600	D211: 314	9.892	2.873
A8	Malus domestica	800	D211: 352	9.814	2.861
V6	Vitis vinifera	600	D110: 243	9.922	2.854
V8	Vitis vinifera	800	D110: 356	9.874	2.861