2019
DOI: 10.1021/acs.langmuir.9b01863
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Adsorption of 4-n-Nonylphenol, Carvacrol, and Ethanol onto Iron Oxide from Nonaqueous Hydrocarbon Solvents

Abstract: The adsorption of 4-n-nonylphenol (4NP), carvacrol, and ethanol onto the surface of iron oxide from nonaqueous solutions is presented. It is found that adsorption of 4NP from alkanes is strong and proceeds to monolayer formation, where the molecules are essentially "upright". However, at high relative concentrations, ethanol successfully outcompetes 4NP for the iron oxide surface. Estimates of the enthalpy and entropy of binding of 4NP were found to be exothermic and entropically disfavored. Sum frequency gene… Show more

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Cited by 2 publications
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“…For the experimental study of molecular conformations at the interfaces, sum frequency generation (SFG) vibrational spectroscopy is particularly useful and powerful. The theory of SFG spectroscopy has been well documented in the literature. When two laser beams of frequencies ω 1 and ω 2 are overlapped temporally and spatially at a surface (interface), a third beam can be generated with a frequency ω = ω 1 + ω 2 . If one of the incident beams has its frequency in the infrared region, a vibrational sum frequency spectrum can be obtained.…”
Section: Introductionmentioning
confidence: 99%
“…For the experimental study of molecular conformations at the interfaces, sum frequency generation (SFG) vibrational spectroscopy is particularly useful and powerful. The theory of SFG spectroscopy has been well documented in the literature. When two laser beams of frequencies ω 1 and ω 2 are overlapped temporally and spatially at a surface (interface), a third beam can be generated with a frequency ω = ω 1 + ω 2 . If one of the incident beams has its frequency in the infrared region, a vibrational sum frequency spectrum can be obtained.…”
Section: Introductionmentioning
confidence: 99%