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Ambient-temperature catalytic degradation of aromatic compounds on iron oxide nanorods supported on carbon nanofiber sheet

Title
Ambient-temperature catalytic degradation of aromatic compounds on iron oxide nanorods supported on carbon nanofiber sheet
Authors
Park, YiseulKim, ChuhyungKim, MinsunKim, SoonhyunChoi, Wonyong
DGIST Authors
Kim, Minsun; Kim, Soonhyun
Issue Date
2019-12
Citation
Applied Catalysis B: Environmental, 259
Type
Article
Article Type
Article
Author Keywords
Iron oxide nanorodsCarbon nanofibersAmbient temperature catalytic oxidationReactive oxygen species (ROS) generationAdvanced oxidation process (AOP)
Keywords
PERSISTENT FREE-RADICALSHYDROGEN-PEROXIDE4-CHLOROPHENOL DEGRADATIONFE-AT-FE2O3 NANOWIRESORGANIC POLLUTANTSOXIDATIONDECOMPOSITIONALPHA-FE2O3ACTIVATIONEFFICIENT
ISSN
0926-3373
Abstract
Fe2O3 nanorods loaded on carbon nanofiber sheet (Fe2O3/CNF) was found to be active in degrading aromatic pollutants spontaneously under the dark and ambient conditions without using any chemical reagent or external energy to assist the degradation reaction. The removal of aromatic pollutants was not caused by adsorption but by oxidative degradation since the generation of degradation intermediates and products was observed. The Fe2O3/CNF exhibited selective degradation activities for aromatic-compounds. Degradation was induced by Fe2O3/CNF only, whereas neither iron oxide nor bare CNF alone exhibited any degradation activity. The degradation on the Fe2O3/CNF was enabled only in the presence of dissolved O2 of which reduction led to the generation of reactive oxygen species (ROS). It is proposed that electrons spontaneously transfer from aromatic-compound to O2 viaFe2O3/CNF with initiating the oxidative degradation and the concurrent ROS generation. The direct electron transfer from organic compound to Fe2O3/CNF, which lead to oxidative degradation. © 2019 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/10849
DOI
10.1016/j.apcatb.2019.118066
Publisher
Elsevier BV
Related Researcher
Files:
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Collection:
Division of Energy Technology1. Journal Articles


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