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Effect of preparation methods on morphology of active manganese dioxide and 2,4-dinitrophenol adsorption performance
- Source :
- Adsorption Science & Technology, Vol 36 (2018)
- Publication Year :
- 2018
- Publisher :
- SAGE Publications, 2018.
-
Abstract
- 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.
- Subjects :
- Physical and theoretical chemistry
QD450-801
Subjects
Details
- Language :
- English
- ISSN :
- 02636174 and 20484038
- Volume :
- 36
- Database :
- Directory of Open Access Journals
- Journal :
- Adsorption Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.0c59661a0c7e45cb9aebf895cb62f686
- Document Type :
- article
- Full Text :
- https://doi.org/10.1177/0263617417752578