Oxidizing capacity of periodate activated with iron-based bimetallic nanoparticles

Hongshin Lee, Ha Young Yoo, Jihyun Choi, In Hyun Nam, Sang-Hyup Lee, Seunghak Lee, Jae Hong Kim, Changha Lee, Jaesang Lee

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Nanosized zerovalent iron (nFe0) loaded with a secondary metal such as Ni or Cu on its surface was demonstrated to effectively activate periodate (IO4 -) and degrade selected organic compounds at neutral pH. The degradation was accompanied by a stoichiometric conversion of IO4 - to iodate (IO3 -). nFe 0 without bimetallic loading led to similar IO4 - reduction but no organic degradation, suggesting the production of reactive iodine intermediate only when IO4 - is activated by bimetallic nFe0 (e.g., nFe0-Ni and nFe0-Cu). The organic degradation kinetics in the nFe0-Ni(or Cu)/IO 4 - system was substrate dependent: 4-chlorophenol, phenol, and bisphenol A were effectively degraded, whereas little or no degradation was observed with benzoic acid, carbamazepine, and 2,4,6-trichlorophenol. The substrate specificity, further confirmed by little kinetic inhibition with background organic matter, implies the selective nature of oxidant in the nFe0-Ni(or Cu)/IO4 - system. The comparison with the photoactivated IO4 - system, in which iodyl radical (IO3 ) is a predominant oxidant in the presence of methanol, suggests IO3 also as primary oxidant in the nFe0-Ni(or Cu)/IO4 - system.

Original languageEnglish
Pages (from-to)8086-8093
Number of pages8
JournalEnvironmental Science and Technology
Volume48
Issue number14
DOIs
Publication statusPublished - 2014 Jul 15

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Oxidants
Nanoparticles
Iron
oxidant
iron
Degradation
degradation
Iodates
Benzoic Acid
Carbamazepine
Substrate Specificity
Phenol
substrate
Iodine
kinetics
Kinetics
Methanol
chlorophenol
Substrates
iodine

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Oxidizing capacity of periodate activated with iron-based bimetallic nanoparticles. / Lee, Hongshin; Yoo, Ha Young; Choi, Jihyun; Nam, In Hyun; Lee, Sang-Hyup; Lee, Seunghak; Kim, Jae Hong; Lee, Changha; Lee, Jaesang.

In: Environmental Science and Technology, Vol. 48, No. 14, 15.07.2014, p. 8086-8093.

Research output: Contribution to journalArticle

Lee, H, Yoo, HY, Choi, J, Nam, IH, Lee, S-H, Lee, S, Kim, JH, Lee, C & Lee, J 2014, 'Oxidizing capacity of periodate activated with iron-based bimetallic nanoparticles', Environmental Science and Technology, vol. 48, no. 14, pp. 8086-8093. https://doi.org/10.1021/es5002902
Lee, Hongshin ; Yoo, Ha Young ; Choi, Jihyun ; Nam, In Hyun ; Lee, Sang-Hyup ; Lee, Seunghak ; Kim, Jae Hong ; Lee, Changha ; Lee, Jaesang. / Oxidizing capacity of periodate activated with iron-based bimetallic nanoparticles. In: Environmental Science and Technology. 2014 ; Vol. 48, No. 14. pp. 8086-8093.
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