Table 3.

The zeta potential and the average particle size estimated by XRD of the CeO₂ NP samples

Samples	Zeta potential (mV)	XRD size (nm)	TEM size (nm)
1	9.3±0.64	5.4±0.10	3.9±0.46
2	−9.7±0.44	6.3±0.10	5.03±0.63
3	−35±0.72	4.7±0.15	3.8±0.33

Note: Data are presented as mean ± standard deviation.

Abbreviations: XRD, X-ray diffraction; NP, nanoparticle; TEM, transmission electron microscopy.