| Flower-, wire-, and sheet-like MnO_2-deposited diatomites:Highly efficient absorbents for the removal of Cr(Ⅵ) |
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| 作者姓名： | Yucheng Du Liping Wang Jinshu Wang Guangwei Zheng Junshu Wu Hongxing Dai |
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| 作者单位： | Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology;Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering,College of Environmental and Energy Engineering, Beijing University of Technology |
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| 基金项目： | financially supported by the Science and Technology Program of Jilin Province (Nos. 20130305015GX, 2014204037SF);the Beijing Natural Science Foundation (No. 2142008);the National Natural Science Foundation of China (No. 51225402) |
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| 摘 要： | Flower-, wire-, and sheet-like MnO2-deposited diatomites have been prepared using a hydrothermal method with Mn(Ac)2, KMnO4and/or MnSO4 as Mn source and diatomite as support. Physical properties of the materials were characterized by means of numerous analytical techniques, and their behaviors in the adsorption of chromium(VI) were evaluated.It is shown that the MnO2-deposited diatomite samples with different morphologies possessed high surface areas and abundant surface hydroxyl groups(especially the wire-like MnO2/diatomite sample). The wire-like MnO2/diatomite sample showed the best performance in the removal of Cr(VI), giving the maximum Cr(VI) adsorption capacity of 101 mg/g.
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| 关 键 词： | Morphological effect Mn O2-deposited diatomite Cr(VI) removal Adsorption efficiency |
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