First acid dissociation at an aqueous H2SO4 interface with sum frequency generation spectroscopy.
The vibrational sum frequency generation (SFG) spectra of the air-liquid interface of H2SO4-H2O solutions over a wide range of concentrations are measured in the SO stretching region (1000-1300 cm(-1)). The analogy of the concentration dependence of Raman and SFG is indicative of a nearly identical behavior of the first acid dissociation at the air-liquid interface as in the bulk.
Miyamae
Takayuki
T
Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1, Higashi, Tsukuba, Ibaraki 305-8565, Japan. t-miyamae@aist.go.jp
Morita
Akihiro
A
Ouchi
Yukio
Y