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Surface Impurities Are Not Responsible For the Charge on the Oil/Water Interface: A Comment
Author(s) -
Jena Kailash C.,
Scheu Rüdiger,
Roke Sylvie
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201204662
Subject(s) - impurity , electrokinetic phenomena , charge (physics) , surface charge , scattering , materials science , surface (topology) , chemical physics , condensed matter physics , chemistry , nanotechnology , physics , optics , geometry , quantum mechanics , mathematics , organic chemistry
The origin of the charge on oil/water interfaces that can be found from electrokinetic mobility measurements is a long‐standing issue that has invoked different explanations. Sum frequency scattering (SFS) shows that impurities are likely not a general cause for the charge (see picture).