Nonideal effects in electroacoustics of solutions of charged particles: combined experimental and theoretical analysis from simple electrolytes to small nanoparticles
| Autor: | S. Gourdin-Bertin, Guillaume Mériguet, Olivier Bernard, R. Pusset, Jean Chevalet, Vincent Dahirel, Marie Jardat, D. Jacob, Emmanuelle Dubois |
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| Přispěvatelé: | PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX (PHENIX), Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Cordouan Technologies, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2015 |
| Předmět: |
Aqueous solution
Chemistry Analytical chemistry General Physics and Astronomy Nanoparticle Ionic bonding 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Signal Charged particle 0104 chemical sciences Chemical physics Calibration [CHIM]Chemical Sciences Ultrasonic sensor Physical and Theoretical Chemistry 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Physical Chemistry Chemical Physics Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2015, 17 (17), pp.11779-11789. ⟨10.1039/C5CP00487J⟩ Physical Chemistry Chemical Physics, 2015, 17 (17), pp.11779-11789. ⟨10.1039/C5CP00487J⟩ |
| ISSN: | 1463-9084 1463-9076 |
| DOI: | 10.1039/c5cp00487j |
| Popis: | The electric signal induced by an ultrasonic wave in aqueous solutions of charged species is measured and analyzed. A device is developed which measures the raw induced electric signal for small sample volumes (few milliliters) and without any preceding calibration. The potential difference generated between two identical electrodes, called the ionic vibration potential (IVP), is thus easily deduced. In parallel, a theory for the IVP is built based on a robust analytical theory already used successfully to account for other transport coefficients in electrolyte solutions. From the analysis of the IVP measured for several aqueous electrolyte solutions, which are well-defined model systems for this technique, we explain and validate the different contributions to the signal. In particular, the non-ideal effects at high concentrations are thoroughly understood. A first step towards colloidal systems is presented by the analysis of the signal in solutions of a polyoxometallate salt, opening the possibility of determinations of reliable electrophoretic mobilities in dispersions of nanoobjects. |
| Databáze: | OpenAIRE |
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