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首页> 外文会议>Eco-materials processing and design XIII. >Fabrication of Nanosheet-assembled Hierarchical AIOOH and γ-Al_2O_3 Microspheres and Its Application in Water Purification
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Fabrication of Nanosheet-assembled Hierarchical AIOOH and γ-Al_2O_3 Microspheres and Its Application in Water Purification

机译：纳米片组装的分层AIOOH和γ-Al_2O_3微球的制备及其在水净化中的应用

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Hierarchical AlOOH microspheres assembled from nanosheets were successfully synthesized via a microwave hydrothermal method, by using AlCl_3·6H_2O and NaOH as raw materials and cetyltrimethyl ammonium bromide (CTAB) as a surfactant. Thermal decomposition of the AIOOH precursor at 500℃ for 2h produced γ-Al_2O_3 that maintained the precursor's morphology. The products were well characterized by SEM, TEM and XRD. Finally, both hierarchical AIOOH and γ-Al_2O_3 microspheres were used to adsorb Congo red from a water solution. The experimental results show that hierarchical AlOOH microspheres with the diameter about 1 μm are assembled from nanosheets with average thickness of about 20nm. The morphology of the obtained γ-Al_2O_3 microspheres is well preserved, and nanometer-size holes appear on the surface of the nanosheets. Both AlOOH and γ-Al_2O_3 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.
机译：以AlCl_3·6H_2O和NaOH为原料，以十六烷基三甲基溴化铵（CTAB）为表面活性剂，通过微波水热法成功合成了纳米片组装的分层AlOOH微球。 AIOOH前驱体在500℃下热分解2h产生的γ-Al_2O_3保持了前驱体的形态。通过SEM，TEM和XRD对产物进行了很好的表征。最后，分层的AIOOH和γ-Al_2O_3微球均用于从水溶液中吸附刚果红。实验结果表明，由平均厚度约为20nm的纳米片组装了直径约1μm的分层AlOOH微球。所获得的γ-Al_2O_3微球的形态得到了很好的保留，并且在纳米片的表面上出现了纳米级的孔。 AlOOH和γ-Al_2O_3微球都非常有效地从废水中去除刚果红污染物，这可能归因于它们的织构化微结构和高比表面积。

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