Nanoscale structure of the oil-water interface

Fukuto, M.; Ocko, B. M.; Bonthuis, D. J.; Netz, R. R.; Steinrück, H. -G.; Pontoni, D.; Kuzmenko, I.; Haddad, J.; Deutsch, M.

doi:10.1103/PhysRevLett.117.256102

Nanoscale structure of the oil-water interface

Journal Article · Thu Dec 15 00:00:00 EST 2016 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.117.256102· OSTI ID:1340344

Fukuto, M. ^[1]; Ocko, B. M. ^[1]; Bonthuis, D. J. ^[2]; Netz, R. R. ^[3]; Steinrück, H. -G. ^[4]; Pontoni, D. ^[5]; Kuzmenko, I. ^[6]; Haddad, J. ^[7]; Deutsch, M. ^[7]

Brookhaven National Lab. (BNL), Upton, NY (United States)
Oxford Univ., Oxford (United Kingdom)
Free Univ. Berlin, Berlin (Germany)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
ESRF - The European Synchrotron, Grenoble (France)
Argonne National Lab. (ANL), Lemont, IL (United States)
Bar-Ilan Univ., Ramat-Gan (Israel)

X-ray reflectivity (XR) and atomistic molecular dynamics (MD) simulations, carried out to determine the structure of the oil-water interface, provide new insight into the simplest liquid-liquid interface. For several oils (hexane, dodecane, and hexadecane) the XR shows very good agreement with a monotonic interface-normal electron density profile (EDP) broadened only by capillary waves. Similar agreement is also found for an EDP including a sub-Å thick electron depletion layer separating the oil and the water. As a result, the XR and MD derived depletions are much smaller than reported for the interface between solid-supported hydrophobic monolayers and water.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS) (SC-27)

Grant/Contract Number:: AC02-06CH11357; AC02-76SF00515; SC0012704

OSTI ID:: 1340344

Alternate ID(s):: OSTI ID: 1336883
OSTI ID: 1361070
OSTI ID: 1371549

Report Number(s):: BNL--112004-2016-JA

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 117; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Long-term deep-supercooling of large-volume water and red cell suspensions via surface sealing with immiscible liquids Huang, Haishui; Yarmush, Martin L.; Usta, O. Berk Nature Communications, Vol. 9, Issue 1 https://doi.org/10.1038/s41467-018-05636-0	journal	August 2018
The nanoscale structure of the electrolyte–metal oxide interface Steinrück, Hans-Georg; Cao, Chuntian; Tsao, Yuchi Energy & Environmental Science, Vol. 11, Issue 3 https://doi.org/10.1039/c7ee02724a	journal	January 2018
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Reflectometry Reveals Accumulation of Surfactant Impurities at Bare Oil/Water Interfaces Scoppola, Ernesto; Micciulla, Samantha; Kuhrts, Lucas Molecules, Vol. 24, Issue 22 https://doi.org/10.3390/molecules24224113	journal	November 2019

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