Fabrication of Nanosheet-Assembled Hierarchical AlOOH and γ-Al2O3 Microspheres and its Application in Water Purification

Xuan Meng He; Guang Jun Li; Hui Liu; Jun Qi Li

doi:10.4028/www.scientific.net/MSF.724.37

Paper Titles

Synthesis of Sn⁴⁺ Doped TiO₂ Nanotube and its Photocatalytic Activity
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Removal of Isopropyl Alcohol (IPA) Using Anodized Photocatalytic Metal Membrane Reactor
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Treatment Performance of Low Strength Electric Wastewater Using Solid-Advanced Oxidation Processes
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Photocatalytic Degradation of Humic Acid Using Ti/Anodized TiO₂ Metal Plate with Fe-Doping
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Fabrication of Nanosheet-Assembled Hierarchical AlOOH and γ-Al₂O₃ Microspheres and its Application in Water Purification
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Low Temperature Molten-Salt Synthesis and Characterization of Nanocrystalline Mullite Whiskers from Coal Gangue
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Effect of Temperature and Carbon Contents on the Synthesis of β-SiC from Silicon Sludge by Direct Carbonization Method
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A Study on the Synthesis of SiC Powder from the Silicon Sludge of the Photovoltaic Industry
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A Study on the Improvement of Nitrogen Removal Efficiency in Small Size Sewage Treatment Facility Utilizing Zeolite Carrier
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HomeMaterials Science ForumMaterials Science Forum Vol. 724Fabrication of Nanosheet-Assembled Hierarchical...

Fabrication of Nanosheet-Assembled Hierarchical AlOOH and γ-Al₂O₃ Microspheres and its Application in Water Purification

Abstract:

Hierarchical AlOOH microspheres assembled from nanosheets were successfully synthesized via a microwave hydrothermal method, by using AlCl₃·6H₂O and NaOH as raw materials and cetyltrimethyl ammonium bromide (CTAB) as a surfactant. Thermal decomposition of the AlOOH precursor at 500°C for 2h produced γ-Al₂O₃ that maintained the precursors morphology. The products were well characterized by SEM, TEM and XRD. Finally, both hierarchical AlOOH and γ-Al₂O₃ microspheres were used to adsorb Congo red from a water solution. The experimental results show that hierarchical AlOOH microspheres with the diameter about 1μm are assembled from nanosheets with average thickness of about 20nm. The morphology of the obtained γ-Al₂O₃ microspheres is well preserved, and nanometer-size holes appear on the surface of the nanosheets. Both AlOOH and γ-Al₂O₃ microspheres are very effective in the removal of Congo red pollutant from waste water which may be attributed to their textured microstructure and high specific surface area.