Table 3.

Results from Calculations Based Upon DLVO and the Sphere-Plate Assumption for MoS₂-PL Nanoparticles and Quartz Collectors

IS (mM KCl)	Zeta potential of MoS2 (mV)	Zeta potential of quartz (mV)	1o energy barrier (kT)	1o energy barrier separation distance (nm)	2o min depth (kT)	2o min separation distance (nm)	Diameter* (nm)	EPM** (10−8 m2 V−1 s−1)
10−3	−21.0 ± 1.8	−28.6 ± 2.0	24.1	2.0	−0.005	95.5	75.4 ± 1.0	−1.6 ± 0.1
10−2	−11.4 ± 1.0	−13.6 ± 0.5	1.9	2.5	−0.13	16	83.4 ± 2.8	−0.9 ± 0.1
10−1.5	−5.3 ± 1.1	−11.3 ± 1.4	None (−2.6)	2.0	None	N/A	79.7 ± 2.4	−0.4 ± 0.1

^*Average hydrodynamic diameter values were experimentally recorded and were used in the DLVO calculations.

^**EPM values for MoS₂-Li were used to calculate zeta potentials via the Smoluchowski equation (Elimelech 1995).