Nanofiber structured oxygen defective CoFe2O4-x catalyst for the water-gas shift reaction in waste-to-hydrogen processes

Yeol Lim Lee; Hyo Young Kim; Kyoung Jin Kim; Ga Ram Hong; Jae Oh Shim; Young Wan Ju; Hyun Seog Roh

doi:10.1016/j.ijhydene.2021.12.175

Nanofiber structured oxygen defective CoFe₂O_4-x catalyst for the water-gas shift reaction in waste-to-hydrogen processes

Yeol Lim Lee, Hyo Young Kim, Kyoung Jin Kim, Ga Ram Hong, Jae Oh Shim, Young Wan Ju, Hyun Seog Roh

Division of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Waste-to-hydrogen processes are a way to produce hydrogen from waste and reduce the amount of landfill/incineration of wastes simultaneously through the gasification of waste. The water-gas shift (WGS) reaction is a key step in this waste-to-hydrogen process by removing the CO and producing additional H₂. A nanofiber-structured CoFe₂O₄ catalyst was synthesized by the electrospinning method, and the catalytic performance in WGS using waste-derived synthesis gas was compared with that of catalysts prepared by sol-gel, hydrothermal, and co-precipitation methods. The CoFe₂O₄ catalyst synthesized by the electrospinning method showed a clear nanofiber structure and revealed a superior redox property. This superior redox property, which has a large relation with the high oxygen storage capacity of the catalyst, induced the formation of an active phase (Co⁰ and Fe₃O₄) in CoFe₂O₄. As a result, the nanofiber structured oxygen defective CoFe₂O_4-x prepared by the electrospinning method showed the best catalytic activity in this study.

Original language	English
Pages (from-to)	30950-30958
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	47
Issue number	72
DOIs	https://doi.org/10.1016/j.ijhydene.2021.12.175
Publication status	Published - 2022 Aug 22

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2020R1A2B5B01002346 ). This research was also supported by the Mid-career Researcher Program ( NRF-2020R1A2C1007847 ) through the National Research Foundation of Korea , funded by the Korean government Ministry of Education .

Publisher Copyright:
© 2021 Hydrogen Energy Publications LLC

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2021.12.175

Cite this

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title = "Nanofiber structured oxygen defective CoFe2O4-x catalyst for the water-gas shift reaction in waste-to-hydrogen processes",

abstract = "Waste-to-hydrogen processes are a way to produce hydrogen from waste and reduce the amount of landfill/incineration of wastes simultaneously through the gasification of waste. The water-gas shift (WGS) reaction is a key step in this waste-to-hydrogen process by removing the CO and producing additional H2. A nanofiber-structured CoFe2O4 catalyst was synthesized by the electrospinning method, and the catalytic performance in WGS using waste-derived synthesis gas was compared with that of catalysts prepared by sol-gel, hydrothermal, and co-precipitation methods. The CoFe2O4 catalyst synthesized by the electrospinning method showed a clear nanofiber structure and revealed a superior redox property. This superior redox property, which has a large relation with the high oxygen storage capacity of the catalyst, induced the formation of an active phase (Co0 and Fe3O4) in CoFe2O4. As a result, the nanofiber structured oxygen defective CoFe2O4-x prepared by the electrospinning method showed the best catalytic activity in this study.",

author = "Lee, {Yeol Lim} and Kim, {Hyo Young} and Kim, {Kyoung Jin} and Hong, {Ga Ram} and Shim, {Jae Oh} and Ju, {Young Wan} and Roh, {Hyun Seog}",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2020R1A2B5B01002346 ). This research was also supported by the Mid-career Researcher Program ( NRF-2020R1A2C1007847 ) through the National Research Foundation of Korea , funded by the Korean government Ministry of Education . Publisher Copyright: {\textcopyright} 2021 Hydrogen Energy Publications LLC",

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AU - Lee, Yeol Lim

AU - Kim, Hyo Young

AU - Kim, Kyoung Jin

AU - Hong, Ga Ram

AU - Shim, Jae Oh

AU - Ju, Young Wan

AU - Roh, Hyun Seog

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2020R1A2B5B01002346 ). This research was also supported by the Mid-career Researcher Program ( NRF-2020R1A2C1007847 ) through the National Research Foundation of Korea , funded by the Korean government Ministry of Education . Publisher Copyright: © 2021 Hydrogen Energy Publications LLC

PY - 2022/8/22

Y1 - 2022/8/22

N2 - Waste-to-hydrogen processes are a way to produce hydrogen from waste and reduce the amount of landfill/incineration of wastes simultaneously through the gasification of waste. The water-gas shift (WGS) reaction is a key step in this waste-to-hydrogen process by removing the CO and producing additional H2. A nanofiber-structured CoFe2O4 catalyst was synthesized by the electrospinning method, and the catalytic performance in WGS using waste-derived synthesis gas was compared with that of catalysts prepared by sol-gel, hydrothermal, and co-precipitation methods. The CoFe2O4 catalyst synthesized by the electrospinning method showed a clear nanofiber structure and revealed a superior redox property. This superior redox property, which has a large relation with the high oxygen storage capacity of the catalyst, induced the formation of an active phase (Co0 and Fe3O4) in CoFe2O4. As a result, the nanofiber structured oxygen defective CoFe2O4-x prepared by the electrospinning method showed the best catalytic activity in this study.

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