Document Detail


Solvation structures of iodide on and below a surface of aqueous solution studied by photodetechment spectroscopy.
MedLine Citation:
PMID:  21721573     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We investigated solvation structures of I- on and below a surface of an aqueous solution by photodetachment spectroscopy. An aqueous solution of an alkali halide was introduced into the vacuum as a continuous liquid flow (liquid beam), and the liquid beam was irradiated with a UV laser pulse. The intensity of electrons emitted from the surface by the laser excitation was measured as a function of wavelength (photodetachment spectroscopy), and we obtained absorption spectrum of I- on and below the solution surface. From the absorption spectrum, we found that I- starts to appear on the solution surface, as the bulk NaI concentration increases. Similar concentration dependence was observed for the KI solution. We also found that I- located inside the solution is pushed to the surface, when NaCl is added to the solution. These changes are explained in terms of the difference in the polarizability of halide ions.
Authors:
Yojiro Hiranuma; Keisuke Kaniwa; Makoto Shoji; Fumitaka Mafune
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-2
Journal Detail:
Title:  The journal of physical chemistry. A     Volume:  -     ISSN:  1520-5215     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9890903     Medline TA:  J Phys Chem A     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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