The Study of Photocatalytic Degradation Kinetics and Mechanism of Malachite Green Dye on Ni–TiO₂ Surface Modified with Polyaniline

Table 1

The calculated crystallite size of Ni–TiO₂ NPs and Ni–TiO₂/PANI NCs.

Photocatalyst	2θ (degree)	β (degree)	β (radian)	D (nm)	Average (nm)
Ni–TiO2	25.3258	0.39200	0.006842	21.71	19.88
	48.0532	0.44520	0.00777	20.42
	27.4601	0.48810	0.00856	17.51
Ni–TiO2/PANI	25.2811	0.40970	0.007151	20.77	19.17
	47.9950	0.45600	0.00796	19.93
	27.4191	0.50890	0.008882	16.80