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- Point_of_zero_charge abstract "The point of zero charge (pzc), in physical chemistry, is a concept relating to the phenomenon of adsorption, and it describes the condition when the electrical charge density on a surface is zero. It is usually determined in relation to an electrolyte's pH, and the pzc value is assigned to a given substrate or colloidal particle. For example, the pzc of solid FeOOH is 9. In other words, pzc is (usually) the pH value at which a solid submerged in an electrolyte exhibits zero net electrical charge on the surface.A related concept in electrochemistry is the electrode potential at the point of zero charge.The value of pH is used to describe pzc only for systems in which H+/OH− are the potential-determining ions (which is the common case). Generally, pzc is the value of the negative decimal logarithm of the activity of the potential-determining ion in the bulk fluid. For example, the charge on the surface of silver iodide crystals may be determined by the concentration of iodide ions in the solution above the crystals. Then, the pzc value of the AgI surface will be described by the concentration of I− in the solution (or negative decimal logarithm of this concentration, pI−).When the pH is lower than the pzc value, the system is said to be "below the pzc." Below the pzc, the acidic water donates more protons than hydroxide groups, and so the adsorbent surface is positively charged (attracting anions). Conversely, above pzc the surface is negatively charged (attracting cations/repelling anions).Point of zero charge is of fundamental importance in surface science. For example, in the field of environmental science, it determines how easily a substrate is able to adsorb potentially harmful ions. It also has countless applications in technology of colloids, e.g., flotation of minerals.At pzc, the colloidal system exhibits zero zeta potential (i.e., the particles remain stationary in an electric field), minimum stability (i.e., exhibits maximum coagulation/flocculation rate), maximum solubility of the solid phase, maximum viscosity of the dispersion, and other peculiarities.".
- Point_of_zero_charge wikiPageID "3864203".
- Point_of_zero_charge wikiPageLength "7120".
- Point_of_zero_charge wikiPageOutDegree "26".
- Point_of_zero_charge wikiPageRevisionID "662588387".
- Point_of_zero_charge wikiPageWikiLink Absolute_electrode_potential.
- Point_of_zero_charge wikiPageWikiLink Acid.
- Point_of_zero_charge wikiPageWikiLink Acidic.
- Point_of_zero_charge wikiPageWikiLink Acronym.
- Point_of_zero_charge wikiPageWikiLink Activity_(chemistry).
- Point_of_zero_charge wikiPageWikiLink Adsorption.
- Point_of_zero_charge wikiPageWikiLink Anion.
- Point_of_zero_charge wikiPageWikiLink Category:Colloidal_chemistry.
- Point_of_zero_charge wikiPageWikiLink Category:Physical_chemistry.
- Point_of_zero_charge wikiPageWikiLink Cation.
- Point_of_zero_charge wikiPageWikiLink Coating.
- Point_of_zero_charge wikiPageWikiLink Electrode_potential.
- Point_of_zero_charge wikiPageWikiLink Electrolyte.
- Point_of_zero_charge wikiPageWikiLink Electrophoresis.
- Point_of_zero_charge wikiPageWikiLink Electrophoretic_mobility.
- Point_of_zero_charge wikiPageWikiLink Environmental_science.
- Point_of_zero_charge wikiPageWikiLink Flocculation.
- Point_of_zero_charge wikiPageWikiLink Flotation_process.
- Point_of_zero_charge wikiPageWikiLink Froth_flotation.
- Point_of_zero_charge wikiPageWikiLink IUPAC.
- Point_of_zero_charge wikiPageWikiLink Ideally_polarizable_electrode.
- Point_of_zero_charge wikiPageWikiLink Initialism.
- Point_of_zero_charge wikiPageWikiLink International_Union_of_Pure_and_Applied_Chemistry.
- Point_of_zero_charge wikiPageWikiLink Ion.
- Point_of_zero_charge wikiPageWikiLink Isoelectric_point.
- Point_of_zero_charge wikiPageWikiLink PH.
- Point_of_zero_charge wikiPageWikiLink Proton.
- Point_of_zero_charge wikiPageWikiLink Protons.
- Point_of_zero_charge wikiPageWikiLink Solubility.
- Point_of_zero_charge wikiPageWikiLink Substrate_(materials_science).
- Point_of_zero_charge wikiPageWikiLink Thermodynamic_activity.
- Point_of_zero_charge wikiPageWikiLink Viscosity.
- Point_of_zero_charge wikiPageWikiLink Zeta_potential.
- Point_of_zero_charge wikiPageWikiLinkText "Point of zero charge".
- Point_of_zero_charge wikiPageWikiLinkText "point of zero charge".
- Point_of_zero_charge hasPhotoCollection Point_of_zero_charge.
- Point_of_zero_charge wikiPageUsesTemplate Template:Reflist.
- Point_of_zero_charge subject Category:Colloidal_chemistry.
- Point_of_zero_charge subject Category:Physical_chemistry.
- Point_of_zero_charge hypernym Concept.
- Point_of_zero_charge type Science.
- Point_of_zero_charge comment "The point of zero charge (pzc), in physical chemistry, is a concept relating to the phenomenon of adsorption, and it describes the condition when the electrical charge density on a surface is zero. It is usually determined in relation to an electrolyte's pH, and the pzc value is assigned to a given substrate or colloidal particle. For example, the pzc of solid FeOOH is 9.".
- Point_of_zero_charge label "Point of zero charge".
- Point_of_zero_charge sameAs Punto_di_carica_zero.
- Point_of_zero_charge sameAs m.0b3ysy.
- Point_of_zero_charge sameAs Q7208282.
- Point_of_zero_charge sameAs Q7208282.
- Point_of_zero_charge wasDerivedFrom Point_of_zero_charge?oldid=662588387.
- Point_of_zero_charge isPrimaryTopicOf Point_of_zero_charge.