Coagulation of Hydrophobic Sols in Statu Nascendi. II. Effect of the Concentration of the Sol and of the Stabilizing Ion on the Coagulation of Silver Chloride, Silver Bromide, and Silver Iodide.

Heterocoagulation

“…Data in acidic media refer to coagulation of positively charged sols by the nitrate ion and in basic solutions to coagulation of negatively charged sols by the sodium ion. of sodium nitrate for the two ~FeOOH sols as a function of pH, 24 hr after mixing the reacting components before and it is in qualitative agreement with theoretical predictions [19,20]. This effect has been observed Fig.…”

Interaction of nonionic dextrans with silver bromide hydrosols

“…According to the theory of the stability of lyophobic colloids, the critical coagulation concentration of an electrolyte should become smaller as the surface potential of the particles is lowered (23). This effect has been experimentally confirmed for the silver bromide sols (24,25). The work of Glazman (26) is of interest in this respect since as the concentration of the surfactant was increased the stability of the sol passed through a minimum with respect to the amount of monovalent electrolyte required for coagulation.…”

Colloidal properties and stability of aqueous suspensions of few-layer graphene: Importance of graphene concentration

“…The effect of particle concentration on the stability of colloids has been the subject of a number of studies (Hanus et al, 2001; Hsu and Liu, 1998; Tezak et al, 1951), but no study has yet focused on the CNMs. Agglomeration studies clearly showed that the effects of Na + on the FLG-FLG interaction followed the prediction of the DLVO theory (Chen and Elimelech, 2006; Chen et al, 2006), but the attachment efficiency was largely different in a narrow FLG concentration (i.e., 1 mg/L to 3 mg/L) under reaction-limited conditions (e.g., 1 mmol/L NaCl).…”