Salt coagulation or flocculation? In situ zeta potential study on ion correlation and slime coating with the presence of clay: A case of coal slurry aggregation

Supramolecular Polymeric Material Based on Twisted Cucurbit[14]uril: Sensitive Detection and Removal of Potential Cyanide from Water

“…Meanwhile, both SEM and TEM (Figure a,b) show that the precipitate (TPAP-Mb@ t Q­[14]-Fe­(CN) 6 3– ) after adsorption of Fe­(CN) 6 3– does not change significantly compared to the morphology of TPAP-Mb@ t Q­[14] and remains as a reticulated porous flocculent structure. It is known that the addition of electrolytes causes colloidal particles to aggregate into larger particles for precipitation. , Subsequently, ζ-potential experiments were used to study the charge of TPAP-Mb@ t Q­[14] to further investigate the adsorption mechanism in depth (Figures S19–S21). In deionized water, the ζ-potential of TPAP-Mb@ t Q­[14] was 24.17 mV, while that of Fe­(CN) 6 3– was −30.08 mV, which changes to −7.7 mV as Fe­(CN) 6 3– was gradually added to TPAP-Mb@ t Q­[14]. , The results indicate that the addition of Fe­(CN) 6 3– reduces or neutralizes the charge carried by TPAP-Mb@ t Q­[14], and the charge in the system is redistributed, leading to the occurrence of coagulation.…”

“…It is known that the addition of electrolytes causes colloidal particles to aggregate into larger particles for precipitation. , Subsequently, ζ-potential experiments were used to study the charge of TPAP-Mb@ t Q­[14] to further investigate the adsorption mechanism in depth (Figures S19–S21). In deionized water, the ζ-potential of TPAP-Mb@ t Q­[14] was 24.17 mV, while that of Fe­(CN) 6 3– was −30.08 mV, which changes to −7.7 mV as Fe­(CN) 6 3– was gradually added to TPAP-Mb@ t Q­[14]. , The results indicate that the addition of Fe­(CN) 6 3– reduces or neutralizes the charge carried by TPAP-Mb@ t Q­[14], and the charge in the system is redistributed, leading to the occurrence of coagulation. UV absorption spectroscopy was used to confirm the intrinsic mechanism by which Fe­(CN) 6 3– causes the fluorescence quenching of TPAP-Mb@ t Q­[14]. , As shown in Figure c, the absorption of Fe­(CN) 6 3– alone and the emission spectrum of TPAP-Mb@ t Q­[14] overlapped, while the other anions did not have much overlap (Figure S22).…”

“…It is known that the addition of electrolytes causes colloidal particles to aggregate into larger particles for precipitation. 44,45 Subsequently, ζ-potential experiments were used to study the charge of TPAP-Mb@tQ [14] to further investigate the adsorption mechanism in depth (Figures S19−S21). In deionized water, the ζ-potential of TPAP-Mb@tQ [14] was 24.17 mV, while that of Fe(CN) 6 3− was −30.08 mV, which changes to −7.7 mV as Fe(CN) 6 3− was gradually added to TPAP-Mb@tQ [14].…”

Comparison Study of KBH4 Spherical Agglomerates Prepared in Different Antisolvents: Mechanisms and Properties

“…Zeta potential can be used to reveal the interactions and agglomeration behavior of particles . The high absolute value of zeta potential means high electrostatic repulsion between particles, preventing particle agglomeration.…”

“…Zeta potential can be used to reveal the interactions and agglomeration behavior of particles. 20 The high absolute value of zeta potential means high electrostatic repulsion between particles, preventing particle agglomeration. Conversely, the low absolute value of zeta potential means that the attractive force is greater than the repulsive force, which means that particles easily flocculate.…”