{"id":13553,"date":"2021-02-03T22:24:52","date_gmt":"2021-02-03T22:24:52","guid":{"rendered":"https:\/\/nanopartikel.info\/glossar\/surface-charge\/"},"modified":"2021-07-13T12:43:56","modified_gmt":"2021-07-13T12:43:56","slug":"surface-charge","status":"publish","type":"glossary","link":"https:\/\/nanopartikel.info\/en\/glossar\/surface-charge\/","title":{"rendered":"Surface charge"},"content":{"rendered":"<p>Is the electric charge present at the interface of the <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Nanoparticle&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Nano-object with all three external dimensions in the nanoscale.\nSee also ISO\/TS 80004-2:2015, International Organization for Standardization&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>nanoparticle<\/span> surface with a polar fluid such as water. The water contains positive and negative ions, which interact with the particle surface. If the number of adsorbed e.g. positive ions exceeds the number of negative ions, <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Surface charge&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Is the electric charge present at the interface of the nanoparticle surface with a polar fluid such as water. The water contains positive and negative ions, which interact with the particle surface. If the number of adsorbed e.g. positive ions exceeds the number of negative ions, surface charge would be positive. Since direct measurement of the surface charge of particles measured is difficult, the zeta potential is calculated as a proxy for the surface charge.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>surface charge<\/span> would be positive. Since direct measurement of the surface charge of particles measured is difficult, the <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Zeta potential&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Also &zeta;-potential, is the electrical potential at the contact layer of a moving particle with an aqueous solution (suspension). Thus, within the same suspensions, it is a relative measure of the surface potential and thus the charge of the particle. For the measurement of the zeta potential, charged particles are moved through an applied electric field. The resulting speed is then a measure of the zeta potential&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>zeta potential<\/span> is calculated as a proxy for the surface charge.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Is the electric charge present at the interface of the nanoparticle surface with a polar fluid such as water. The water contains positive and negative ions, which interact with the particle surface. If the number of adsorbed e.g. positive ions exceeds the number of negative ions, surface charge would be positive. Since direct measurement of [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"menu_order":0,"template":"","meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/nanopartikel.info\/en\/wp-json\/wp\/v2\/glossary\/13553"}],"collection":[{"href":"https:\/\/nanopartikel.info\/en\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/nanopartikel.info\/en\/wp-json\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/nanopartikel.info\/en\/wp-json\/wp\/v2\/users\/6"}],"version-history":[{"count":3,"href":"https:\/\/nanopartikel.info\/en\/wp-json\/wp\/v2\/glossary\/13553\/revisions"}],"predecessor-version":[{"id":16859,"href":"https:\/\/nanopartikel.info\/en\/wp-json\/wp\/v2\/glossary\/13553\/revisions\/16859"}],"wp:attachment":[{"href":"https:\/\/nanopartikel.info\/en\/wp-json\/wp\/v2\/media?parent=13553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}