Photoelectron spectroscopy of aqueous solutions: streaming potentials of NaX (X = Cl, Br, and I) solutions and electron binding energies of liquid water and X-

Naoya Kurahashi; Shutaro Karashima; Ying Tang; Takuya Horio; Bumaliya Abulimiti; Yoshi-Ichi Suzuki; Yoshihiro Ogi; Masaki Oura; Toshinori Suzuki

doi:10.1063/1.4871877

Photoelectron spectroscopy of aqueous solutions: streaming potentials of NaX (X = Cl, Br, and I) solutions and electron binding energies of liquid water and X-

J Chem Phys. 2014 May 7;140(17):174506. doi: 10.1063/1.4871877.

Authors

Naoya Kurahashi¹, Shutaro Karashima¹, Ying Tang¹, Takuya Horio¹, Bumaliya Abulimiti², Yoshi-Ichi Suzuki¹, Yoshihiro Ogi², Masaki Oura³, Toshinori Suzuki¹

Affiliations

¹ Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502, Japan.
² Molecular Reaction Dynamics Research Team, RIKEN Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako 351-0198, Japan.
³ 5RIKEN SPring-8 Center, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan.

PMID: 24811645
DOI: 10.1063/1.4871877

Abstract

The streaming potentials of liquid beams of aqueous NaCl, NaBr, and NaI solutions are measured using soft X-ray, He(I), and laser multiphoton ionization photoelectron spectroscopy. Gaseous molecules are ionized in the vicinity of liquid beams and the photoelectron energy shifts are measured as a function of the distance between the ionization point and the liquid beam. The streaming potentials change their polarity with concentration of electrolytes, from which the singular points of concentration eliminating the streaming potentials are determined. The streaming currents measured in air also vanish at these concentrations. The electron binding energies of liquid water and I(-), Br(-), and Cl(-) anions are revisited and determined more accurately than in previous studies.