2017
DOI: 10.1002/elan.201700108
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Electrochemical Studies on Self‐assembled Monolayer (SAM) Upon Exposure to Anionic Surfactants: PFOA, PFOS, SDS and SDBS

Abstract: We investigate the interaction between anionic surfactants (AS) and a self‐assembled monolayer (SAM) using cyclic voltammetry (CV), electrochemical impedance spectrum (EIS) and electrochemical quartz crystal microbalance (EQCM). The AS include two common fluorosurfactants, which have been previously formulated in aqueous film‐forming foam (AFFF): perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), and two common detergents: sodium dodecyl sulphate (SDS) and sodium dodecyl benzenesulfonate (SDBS… Show more

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Cited by 8 publications
(10 citation statements)
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“…Preparation of SAM : Au wire (Sigma, ∼100 μm in diameter) was cut into short pieces of ∼1 cm length and sealed into a glass tube as the Au electrode. Electro‐contact was made by filling the glass tube with dried active carbon powder and a copper wire . Prior to the SAM formation, the Au surface was cleaned by dipping it into a Piranha solution (2 : 1 H 2 SO 4 :H 2 O 2 , v/v ) ( be careful, this solution reacts vigorously with organic compounds !)…”
Section: Methodssupporting
confidence: 87%
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“…Preparation of SAM : Au wire (Sigma, ∼100 μm in diameter) was cut into short pieces of ∼1 cm length and sealed into a glass tube as the Au electrode. Electro‐contact was made by filling the glass tube with dried active carbon powder and a copper wire . Prior to the SAM formation, the Au surface was cleaned by dipping it into a Piranha solution (2 : 1 H 2 SO 4 :H 2 O 2 , v/v ) ( be careful, this solution reacts vigorously with organic compounds !)…”
Section: Methodssupporting
confidence: 87%
“…Nova software was also employed to fit the EIS data. Note the anionic redox couple of Fe(CN) 6 3− /Fe(CN) 6 4− was selected in this report to avoid the possible electrostatic attraction between anionic surfactants and cationic redox couple (oxidised and positively‐charged ferrocene) to form ion‐pair and precipitate/deposit on the electrode surface, which might lead to the interference to the adsorption .…”
Section: Methodssupporting
confidence: 87%
See 3 more Smart Citations