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Tuning morphology, ...
Tuning morphology, composition and oxygen reduction reaction (ORR) catalytic performance of manganese oxide particles fabricated by γ-radiation induced synthesis
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- Li, Zhuofeng, 1991- (author)
- KTH,Tillämpad fysikalisk kemi,Mats Jonssson's group
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- Yang, Yi (author)
- KTH,Tillämpad fysikalisk kemi
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- Relefors, Axel (author)
- Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)
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Kong, Xiangyang (author)
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- Montserrat Siso, Gerard, 1992 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wickman, Björn, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Kiros, Yohannes, 1956- (author)
- KTH,Processteknologi
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- Soroka, Inna (author)
- KTH,Tillämpad fysikalisk kemi
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
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In: Journal of Colloid and Interface Science. - : Elsevier BV. - 1095-7103 .- 0021-9797. ; 583, s. 71-79
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https://doi.org/10.1...
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Abstract
Subject headings
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- A γ-radiation induced synthesis method is used to fabricate manganese oxide catalysts through both reduction and oxidation routes. It is shown that the morphology, composition and electrochemical performance of the produced manganese oxide particles can be tuned by altering the redox conditions. The catalysts prepared via radiolytic oxidation have a hollow spherical morphology, possess γ-MnO2 structure and show high catalytic activity for the complete four-electron reaction pathway of the oxygen reduction reaction (ORR) in alkaline electrolyte. Meanwhile, the catalysts synthesized via radiolytic reduction possess a rod-like morphology with a Mn3O4 bulk structure and favour the incomplete two-electron reaction pathway for ORR. The high catalytic activity of the manganese oxide synthesized via the oxidation route can be attributed to high electrochemical surface area and increased amount of Mn3+ on the surface as compared to those in the sample obtained via the reduction route.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- γ-radiation induced synthesis
- ORR
- 4-electron transfer
- MnOx nanoparticles
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Li, Zhuofeng, 19 ...
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Yang, Yi
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Relefors, Axel
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Kong, Xiangyang
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Montserrat Siso, ...
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Wickman, Björn, ...
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show more...
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Kiros, Yohannes, ...
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Soroka, Inna
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Inorganic Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Other Chemistry ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
- Articles in the publication
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Journal of Collo ...
- By the university
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Chalmers University of Technology
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Royal Institute of Technology