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The zeta potential is an important and readily measurable indicator of the stability of colloidal dispersions. The magnitude of the zeta potential indicates the degree of electrostatic repulsion between adjacent, similarly charged particles in a dispersion. For molecules and particles that are small enough, a high zeta potential will confer ...
Since the 1940s, the DLVO theory has been used to explain phenomena found in colloidal science, adsorption and many other fields. Due to the more recent popularity of nanoparticle research, DLVO theory has become even more popular because it can be used to explain behavior of both material nanoparticles such as fullerene particles and ...
The potential of zero charge is used for determination of the absolute electrode potential in a given electrolyte. IUPAC also defines the potential difference with respect to the potential of zero charge as: E pzc = E − E σ=0. where: E pzc is the electrode potential difference with respect to the point of zero charge, E σ=0
Zeta potential is a calculated rather than measured property, and is a function of both the nanoparticle of interest and its surrounding medium, requiring a description of the measurement temperature; the composition, pH, viscosity, and dielectric constant of the medium; and value used for the Henry function to be meaningful.
Electric potential at this plane is called electrokinetic potential or zeta potential (also denoted as ζ-potential). [25] [26] The electric potential on the external boundary of the Stern layer versus the bulk electrolyte is referred to as Stern potential. Electric potential difference between the fluid bulk and the surface is called the ...
where is the permittivity of water, is the viscosity of water, is the zeta potential of the colloidal particle in the salt solution, = (+) / (+ +) is the reduced difference between the diffusion constant of the positively charged ion, +, and the diffusion constant of the negatively charged ion, , and is the salt concentration.
Teens aren't just sneaking quick glances at their phones during class.They're spending an average of 1.5 hours on them every school day, with 25% of students logging on for more than two hours ...
The stability of particles, colloidal or otherwise, is most commonly evaluated in terms of zeta potential. This parameter provides a readily quantifiable measure of interparticle repulsion, which is the key inhibitor of particle aggregation. Similar agglomeration processes occur in other dispersed systems too.
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