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Titolo:
Potential-induced transformation for surfactant aggregates on a metal surface
Autore:
Tang, ZY; Wang, EK;
Indirizzi:
Chinese Acad Sci, Changchun Inst Appl Chem, Electroanalyt Chem Lab, Changchun 130022, Peoples R China Chinese Acad Sci Changchun Peoples R China 130022 30022, Peoples R China Chinese Acad Sci, Changchun Inst Appl Chem, Natl Analyt Res Ctr Electrochem & Spect, Changchun 130022, Peoples R China Chinese Acad Sci Changchun Peoples R China 130022 30022, Peoples R China
Titolo Testata:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
fascicolo: 1-2, volume: 496, anno: 2001,
pagine: 82 - 87
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCANNING-TUNNELING-MICROSCOPY; SODIUM DODECYL-SULFATE; VARIABLE-CHARGE SURFACES; SOLID-LIQUID INTERFACES; IONIC SURFACTANTS; FORCE MICROSCOPY; INFRARED-SPECTROSCOPY; DIRECT VISUALIZATION; ELECTRODE SURFACES; AU(111) ELECTRODE;
Keywords:
surfactant; electrochemical scanning tunneling microscopy; adsorption;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, EK Chinese Acad Sci, Changchun Inst Appl Chem, Electroanalyt Chem Lab, Changchun 130022, Peoples R China Chinese Acad Sci Changchun Peoples RChina 130022 oples R China
Citazione:
Z.Y. Tang e E.K. Wang, "Potential-induced transformation for surfactant aggregates on a metal surface", J ELEC CHEM, 496(1-2), 2001, pp. 82-87

Abstract

Surfactant adsorption on metal surfaces has been used to limit the activity of the electrode surface and to stabilize colloidal clusters and nanoparticles in solution, but the adsorption and relative potential-induced structure change of the surfactant were not known. Here, the adsorption of sodiumdodecyl sulfate (SDS) on a Au(111) surface under potential control was investigated by in situ scanning tunneling microscopy (STM). The STM images showed that the morphology of SDS on Au(111) was changed from a hemi-cylindrical micellar monolayer to a compact and uniform bilayer through control of the potential. The transition between the hemimicellar monolayer and the compact bilayer is not reversed after a period of time. The model of potential-induced transformation for SDS aggregates on Au(111) was established. (C)2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 01:03:51