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Hydrothermal synthesis and characterization of surface-modified δ-MnO2 with high Fenton-like catalytic activity

Paper ID Volume ID Publish Year Pages File Format Full-Text
50209 46784 2015 4 PDF Available
Title
Hydrothermal synthesis and characterization of surface-modified δ-MnO2 with high Fenton-like catalytic activity
Abstract

•Surface modified δ-MnO2 was synthesized by a simple hydrothermal method.•It exhibited high Fenton-like catalytic activity.•The adsorbed C6H5–COO− on δ-MnO2 enhanced its catalytic activity.

Surface-modified δ-MnO2 with a hierarchical structure was synthesized via a hydrothermal redox reaction between toluene and KMnO4. Toluene is oxidized to produce benzoic acid which rapidly adsorbs onto the surface of δ-MnO2. The δ-MnO2 sample prepared with toluene exhibited a much higher catalytic activity for the Fenton-like oxidation of methylene blue in aqueous solution than that prepared without toluene. The enhanced catalytic activity might be attributed to the surface-bound persistent free radicals produced from the electron transfer from the adsorbed C6H5–COO− to Mn(IV).

Keywords
MnO2; Surface modification; Heterogeneous Fenton reaction; Discoloration
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Hydrothermal synthesis and characterization of surface-modified δ-MnO2 with high Fenton-like catalytic activity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 67, 5 July 2015, Pages 68–71
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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