Journal of Surface Science and Technology

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Effects of Acid Treatment on Surface Characteristics of the Oxides, CoO, MnO2 and ZnO


Affiliations
1 Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India
     

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Metal oxides are commonly used as oxidation catalysts. The present work investigates the effects of treatment with 0.5 and 1.0 N H2SO4 on the surface characteristics of three oxides, CoO, MnO2 and ZnO. The materials along with the parent oxides were characterized by powder XRD, FT-IR and SEM measurements. BET surface area and pore characteristics as well as cation exchange capacities of the materials were also determined. Significant differences were observed in the materials following acid treatment. These differences in the physico-chemical characteristics of the two sets of materials, were discussed on the basis of the possible use of the materials as oxidation catalysts.

Keywords

CoO, MnO2, ZnO, Acid Treatment, Surface Area, Pore Volume, Cation Exchange Capacity.
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  • Effects of Acid Treatment on Surface Characteristics of the Oxides, CoO, MnO2 and ZnO

Abstract Views: 223  |  PDF Views: 2

Authors

Moutusi Das
Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India
Krishna G. Bhattacharyya
Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India

Abstract


Metal oxides are commonly used as oxidation catalysts. The present work investigates the effects of treatment with 0.5 and 1.0 N H2SO4 on the surface characteristics of three oxides, CoO, MnO2 and ZnO. The materials along with the parent oxides were characterized by powder XRD, FT-IR and SEM measurements. BET surface area and pore characteristics as well as cation exchange capacities of the materials were also determined. Significant differences were observed in the materials following acid treatment. These differences in the physico-chemical characteristics of the two sets of materials, were discussed on the basis of the possible use of the materials as oxidation catalysts.

Keywords


CoO, MnO2, ZnO, Acid Treatment, Surface Area, Pore Volume, Cation Exchange Capacity.