Mechanism of charging metal oxide colloids in non-polar solvents
The aim is to characterize the surface of charged metal oxide colloids in non-polar liquids. Surfactant is added to stabilize charges on particle surfaces, and is present as inverse micelles. Acid-base interactions, arising from proton transfer from the colloid surface to inverse micelles are one mechanism proposed for the origin of particle surface charge in non-polar solvents. Recent results of the electrophoretic mobility with metal oxide nanoparticles support this mechanism, but there have been no studies of the structure these particle/surfactant surfaces. Contrast-variation SANS (CV SANS) will be used to determine how surfactant inverse micelles interact with model metal oxide colloids. By using deuterated surfactant (D-AOT) with associated H2O as well as H-AOT with associated D2O, it will be possible to determine whether proton (deuteron) transfer occurs, and if so, whether the surfactant adsorbs appreciably on the surface. By systematically varying the metal oxide type and surfactant concentration, this study will reveal any universal behavior.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
EASTOE Julian; ALEXANDER Shirin; BROWN Paul; GRILLO Isabelle; JAMES Craig; NAVARRO Miguel; Gregory N. Smith and YAN Ci. (2013). Mechanism of charging metal oxide colloids in non-polar solvents. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1326
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.