The Preparation, Texture and Electrodeposition Mechanism of Reticular MnO2 Catalytic Materials with High Porosity

Zhi Ming Yu; Jia Xiu Hu; Jian Zhao; Yun Song Niu

doi:10.4028/www.scientific.net/AMR.311-313.1784

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 311-313The Preparation, Texture and Electrodeposition...

The Preparation, Texture and Electrodeposition Mechanism of Reticular MnO₂ Catalytic Materials with High Porosity

Abstract:

The Ni-based reticular MnOx catalytic materials with high porosity and high specific area were prepared by the electrodeposition method. XRD and SEM were employed to characterize the phase structure and morphology of the MnOx films before and after heat treatment. The phase structure has changed from irregular amorphous structure to compacting crystal structure on the effect of heat treatment. The results show that the phase in the film is γ-MnO₂ after aging. The electrodeposition mechanism of MnO₂ has also been studied in this paper. MnO₂ was deposited by the hydrolysis reaction of Mn2+ in electrolyte and the disproportionation reaction of unstable Mn³⁺ ions. A large number of hydrogen was released during the whole deposition process.

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Periodical:

Advanced Materials Research (Volumes 311-313)

Pages:

1784-1788

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.311-313.1784

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Online since:

August 2011

Authors:

Zhi Ming Yu, Jia Xiu Hu, Jian Zhao, Yun Song Niu

Keywords:

Amorphous, Disproportionation Reaction, Electro-Deposition, Heat Treatment, Hydrolysis Reaction, Ni-Based Reticular MnO₂

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