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Hydrothermal synthesis of α-MnO2/MIL-101(Cr) composite and its bifunctional electrocatalytic activity for oxygen reduction/evolution reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
49572 46755 2014 5 PDF Available
Title
Hydrothermal synthesis of α-MnO2/MIL-101(Cr) composite and its bifunctional electrocatalytic activity for oxygen reduction/evolution reactions
Abstract

•An α-MnO2/MIL-101(Cr) composite was synthesised using a hydrothermal process.•The composite exhibits excellent ORR and OER in an alkaline electrolyte.•The improvement in activity is related to micropores surrounding the α-MnO2.•The stability is related to the interaction between the α-MnO2 and the MIL-101(Cr).

An α-MnO2/MIL-101(Cr) composite catalyst was synthesised using a hydrothermal process. In this composite, α-MnO2 nanoparticles are embedded in an MIL-101(Cr) matrix with abundant micropores and a high specific surface area, which improves the reactant's accessibility to catalytically active sites, resulting in a significant improvement in oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in an alkaline electrolyte. The strong interactions between α-MnO2 nanoparticles and MIL-101(Cr) matrix result in a high structural stability and therefore excellent activity stability.

Keywords
Oxygen reduction reaction; Oxygen evolution reaction; Hydrothermal process; Composite; Metal-organic frameworks; Manganese dioxide
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Hydrothermal synthesis of α-MnO2/MIL-101(Cr) composite and its bifunctional electrocatalytic activity for oxygen reduction/evolution reactions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 54, 5 September 2014, Pages 17–21
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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