Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 장진호 | - |
dc.date.accessioned | 2018-07-24T05:58:34Z | - |
dc.date.available | 2018-07-24T05:58:34Z | - |
dc.date.issued | 2016-06 | - |
dc.identifier.citation | ELECTROANALYSIS, v.28, no.6, page.1356-1361 | en_US |
dc.identifier.issn | 1040-0397 | - |
dc.identifier.issn | 1521-4109 | - |
dc.identifier.uri | https://onlinelibrary.wiley.com/doi/abs/10.1002/elan.201500629 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/72694 | - |
dc.description.abstract | We report re-evaluated Sn(II)-Br- speciation by cyclic voltammetry on a glassy carbon (GC) electrode in concentrated Br- aqueous solutions. Contrary to the previous reports, electrochemical evidences of Sn(II)Br-5(3-), Sn(II)Br-6(4-), Sn(II)Br-7(5-), and Sn(II)Br-8(6-) were found in aqueous solutions containing different Br- concentrations with ionic strength, I=6. Formation constants (j) of Sn(II)-Br- speciation reactions and corresponding fractions of Sn(II)Br(j)(2-j)f(j) were evaluated. Compared to f(j) as a function of Br- concentrations based on the previous report by Fedorov etal., f(j) measured by our electrochemical measurements were dramatically different. In an aqueous solution with 6M Br-, 50% of Sn(II)Br-8(6-), 20% of each Sn(II)Br-6(4-) and Sn(II)Br-7(5-) exist in total Sn(II)-Br-. The diffusion coefficients, D of Sn(II)-Br- in aqueous solutions containing different Br- concentrations were estimated, and D decreased as a Br- concentration in the solution increased, which is mainly attributed to the enlarged molecular size of Sn(II)-Br- with more Br- coordination. A nucleation mechanism was also studied as a function of Sn(II)-Br- speciation. It was found that the nucleation mechanism of an electrodeposited Sn on a GC electrode gradually changed from instantaneous to progressive as j in Sn(II)Br-j(2-j) increases to 8, indicating the electrochemical Sn nucleation on a GC electrode is strongly dependent on Sn(II)-Br- speciation. | en_US |
dc.description.sponsorship | This study was financially supported by Sungshin Women's University research grant, 2015-1-28-006/1. The authors also thank Yunjin Leem for the helpful discussions. | en_US |
dc.language.iso | en | en_US |
dc.publisher | WILEY-V C H VERLAG GMBH | en_US |
dc.subject | Sn(II)-Br- speciation | en_US |
dc.subject | Sn(II)Br-7(5-) | en_US |
dc.subject | Sn(II)Br-8(6-) | en_US |
dc.subject | cyclic voltammetry | en_US |
dc.title | Re-evaluation of Sn(II)-Br− Speciation in Concentrated Bromide Media by Cyclic Voltammetry | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1002/elan.201500629 | - |
dc.relation.journal | ELECTROANALYSIS | - |
dc.contributor.googleauthor | Park, Dasom | - |
dc.contributor.googleauthor | Chang, Jinho | - |
dc.relation.code | 2016000055 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF CHEMISTRY | - |
dc.identifier.pid | jhcechem | - |
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