Preparation of 7-MnO2 Thin Film and Its Catalytic Property

Abstract

Abstract: A γ-MnO₂ thin film was prepared using nano-sized γ-MnO₂ powder by the suspending
particles sintering method. The γ-MnO₂ thin film was characterized by AFM, SEM, BET and XRD techniques, and the effects of La, PVA additives and pH value on the
structure of γ-MnO₂ thin film were examined. In additim, catalytic properties of γ-MnO₂ thin film and γ-MnO₂nanometer
powder were compared by H₂-TPR technique. The results show that La can efficiently suppress the phase transformation of γ-MnO₂ thin film at La/Mn=0.15,
there are no cracks on the surface of γ-MnO₂ thin film dipped at pH=10 and PVA/γ-MnO₂=7%, and the activity of oxygen center of
γ-MnO₂ thin film is slightly lower than that of γ-MnO₂ nanometer powder.

Key words: γ-MnO₂, thin film, additives, catalytic property

CLC Number:

TB43

ZHAO Li-Li WANG Rong-Shu. Preparation of 7-MnO₂ Thin Film and Its Catalytic Property[J]. Journal of Inorganic Materials.

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Preparation of 7-MnO₂ Thin Film and Its Catalytic Property

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