Synthesis, Characterization, and Photocatalytic Properties of Sulfur- and Carbon-Codoped TiO2 Nanoparticles

Table 3 The zeta potential, electrophoretic mobility, and dynamic light scattering analysis (hydrodynamic diameter and polydispersity) for non-doped TiO₂ and SC-TiO₂ powders

Sample	Zeta potential (mV)	Electrophoretic mobility (μmcm/Vs)	Particle size (nm)	Polydispersity index
Pure TiO₂	−43.5 mV ±0.7	−3.18	411	0.24
Sample 1	−24.2 mV ±1.0	−1.75	683	0.42
Sample 2	−25.0 mV ±0.5	−1.67	660	0.46