Enhanced boron adsorption onto synthesized MgO nanosheets by ultrasonic method |
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| Institution: | 1. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;3. Division of Rare Metal Materials & Metallurgy, General Research Institute for Non-Ferrous Metals, Beijing 100008, China;1. Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;2. Department of Mining Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;1. College of Environmental Science and Engineering, Nankai University, No. 38, Tongyan Road, Jinnan District, Tianjin 300350, China;2. Graduate School of Environmental Studies, Tohoku University, Aramaki Aza Aoba 6-6-11, Aoba-ku, Sendai 980-8579, Japan;3. National-Local Joint Engineering Research Center of Biomass Resource Utilization, Nankai University, No. 38, Tongyan Road, Jinnan District, Tianjin 300350, China;1. School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong, PR China;2. Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, PR China;1. Universitat Politècnica de Catalunya, Department of Chemical Engineering, EPSEVG, Av. Víctor Balaguer, s/n, 08800 Vilanova i la Geltrú, Spain;2. Ecole des mines d’Alès, Centre des Matériaux des Mines d’Alès, 6 Avenue de Clavières, F-30319 Alès Cedex, France;3. Universitat Politècnica de Catalunya, Department of Chemical Engineering, ETSEIB, Diagonal 647, 08028 Barcelona, Spain;1. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;2. State Key Laboratory of Chemical Engineering (Tianjin University), Tianjin 300350, China |
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| Abstract: | MgO nanosheets with high adsorption performance were fabricated by an ultrasonic method. It was revealed that, nest-like MgO was formed from the magnesium salt solution precipitation and further calcination. Then the nest-like MgO was exfoliated by ultrasonic waves to obtain MgO nanosheets with approximately a lateral of 200–600 nm and a thickness of 10 nm. Adjusting the ultrasonic time and power, the specific surface areas of MgO nanosheets could be tuned in a range of 79–168 m2/g. The synthesized MgO nanosheets were used as adsorbents to remove boron from aqueous solution, and the maximum boron adsorption capacity of these MgO nanosheets reached 87 mg g−1. The high uptake capability of the MgO nanosheets makes it potentially adsorbent for the removal of boron from wastewaters. |
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| Keywords: | Ultrasonication Boron adsorption Magnesium oxide nanosheets Adsorption mechanism |
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