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Lee, Changha
Advanced Redox Technology (ART) Lab
Research Interests
  • Water Treatment, Advanced Oxidation/Reduction, Water Chemistry, Environmental Catalyst

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수중 ABTS의 직접 광분해: 새로운 Actinometer로의 적용

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Title
수중 ABTS의 직접 광분해: 새로운 Actinometer로의 적용
Other Titles
UV Direct Photolysis of 2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) in Aqueous Solution: Application as a Novel Chemical Actinometer
Author
Lee, ChanghaCho, MinYoon, Jea Yong
Issue Date
2005-10
Publisher
한국공업화학회
Citation
응용화학, v.9, no.2, pp.332 - 335
Abstract
The direct photolysis of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) in aqueous solution was investigated under ultraviolet (UV) irradiation. It was newly found that ABTS is directly photolyzed to yield the one-electron oxidized radical, ABTSㆍ, the possible mechanisms of dissolved oxygen. From the observed photolytic behaviors, the possible mechanisms of ABTS photolysis were proposed. The proposed photolytic reactions were supported by the observed stoichiometry between the amounts of ABTSㆍdicals produced and ABTS molecules decomposed. The direct photolysis of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) in aqueous solution was investigated under ultraviolet (UV) irradiation. It was newly found that ABTS is directly photolyzed to yield the one-electron oxidized radical, ABTSㆍ+, which is a blue-green colored persistent radical species with strong visible absorption bands. The photochemical production of ABTSㆍ+ was strongly dependent on the solution pH and the presence of dissolved oxygen. From the observed photolytic behaviors, the possible mechanisms of dissolved oxygen. From the observed photolytic behaviors, the possible mechanisms of ABTS photolysis were proposed. The proposed photolytic reactions were supported by the observed stoichiometry between the amounts of ABTSㆍ+ radicals produced and ABTS molecules decomposed.
URI
https://scholarworks.unist.ac.kr/handle/201301/8179
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