dc.citation.endPage |
934 |
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dc.citation.number |
10 |
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dc.citation.startPage |
923 |
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dc.citation.title |
CHEMOSPHERE |
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dc.citation.volume |
56 |
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dc.contributor.author |
Lee, Changha |
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dc.contributor.author |
Yoon, JY |
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dc.date.accessioned |
2023-12-22T10:43:23Z |
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dc.date.available |
2023-12-22T10:43:23Z |
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dc.date.created |
2014-10-31 |
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dc.date.issued |
2004-09 |
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dc.description.abstract |
The thermal enhancement of the formation of ·OH by the hv/Fe(III)/H2O2 system (including the Fe(III)/H 2O2 system) was quantitatively investigated with reaction temperatures ranging from 25 to 50°C. A temperature dependent kinetic model for the hv/Fe(III)/H2O2 system, incorporating 12 major reactions with no fitted rate constants or activation energies, was developed, and successfully explained the experimental measurements. Particularly, the thermal enhancement of Fe(OH)2+ photolysis which is the most significant step in the hv/Fe(III)/H2O2 system was effectively explained by two factors; (1) the variation of the Fe(OH) 2+ concentration with temperature, and (2) the temperature dependence of the quantum yield for Fe(OH)2+ photolysis (measured activation energy=11.4 kJmol-1). Although in both the hv/Fe(III)/H 2O2 and Fe(III)/H2O2 systems, elevated temperatures enhanced the formation of ·OH, the thermal enhancement was much higher in the dark Fe(III)/H2O 2 system than the hv/Fe(III)/H2O2 system. Furthermore, it was found that the relative thermal enhancement of the formation of ·OH in the presence of ·OH scavengers (tert-butyl alcohol) was magnified in the Fe(III)/H2O2 system but was not in the hv/Fe(III)/H2O2 system. |
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dc.identifier.bibliographicCitation |
CHEMOSPHERE, v.56, no.10, pp.923 - 934 |
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dc.identifier.doi |
10.1016/j.chemosphere.2004.04.047 |
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dc.identifier.issn |
0045-6535 |
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dc.identifier.scopusid |
2-s2.0-3242709270 |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/8137 |
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dc.identifier.url |
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=3242709270 |
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dc.identifier.wosid |
000223209100006 |
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dc.language |
영어 |
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dc.publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
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dc.title |
Temperature dependence of hydroxyl radical formation in the hv/Fe3+/H2O2 and Fe3+/H2O2 systems |
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dc.type |
Article |
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dc.description.journalRegisteredClass |
scopus |
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