Effect of preparation methods on morphology of active manganese dioxide and 2,4-dinitrophenol adsorption performance
Herein active manganese dioxide was prepared by different methods using KMnO 4 and MnSO 4 ·H 2 O as inorganic precursors. The impact of preparation methods on morphology and adsorption performance of the synthesized products was investigated. The experimental results show that the reaction temperatu...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2018-05-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/0263617417752578 |
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| Summary: | Herein active manganese dioxide was prepared by different methods using KMnO 4 and MnSO 4 ·H 2 O as inorganic precursors. The impact of preparation methods on morphology and adsorption performance of the synthesized products was investigated. The experimental results show that the reaction temperature and pressure had a great effect on the morphology and adsorption performance of active manganese dioxide. The shape of active manganese dioxide prepared at room temperature and pressure was short rod-like while active manganese dioxide synthesized by hydrothermal method was mesoporous fibers and had better adsorption performance. The adsorption behavior of 2,4-dinitrophenol on mesoporous manganese dioxide was well described by Langmuir and Freundlich isotherm equation ( R 2 >0.99) and pseudo-second-order kinetic equation ( R 2 >0.99), so the adsorption process maybe a chemical and monolayer adsorption. The pH of solution had significant effect on the adsorption performance of 2,4-dinitrophenol on mesoporous manganese dioxide. The adsorption capacity was 2.539 mg/g in the condition of pH = 7. |
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| ISSN: | 0263-6174 2048-4038 |