Molecular layer of gaslike domains at a hydrophobic-water interface observed by frequency-modulation atomic force microscopy.
Langmuir
; 28(35): 12691-5, 2012 Sep 04.
Article
em En
| MEDLINE
| ID: mdl-22897342
ABSTRACT
It was numerically predicted that dissolved gas particles could enrich and adsorb at hydrophobic-liquid interfaces. Here we observe nucleation and growth of bright patches of â¼0.45 nm high on the graphite surface in pure water with frequency-modulation atomic force microscopy when the dissolved gas concentration is below the saturation level. The bright patches, suspected to be caused by adsorption of nitrogen molecules at the graphite-water interface, are composed of domains of a rowlike structure with the row separation of 4.2 ± 0.3 nm. The observation of this ordered adlayer might underline the gas segregation at various water interfaces.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Carbono
/
Água
/
Microscopia de Força Atômica
/
Interações Hidrofóbicas e Hidrofílicas
/
Grafite
/
Nitrogênio
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article