Preparation of core-shell structured amorphous aluminum hydroxide ultra-fine powders via a microwave-hydrothermal route |
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| Authors: | Xiuyong Wu Xianfeng MengJing Ding Qian KongDebao Wang Zhengshui Hu |
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| Affiliation: | a Department of Chemistry and Chemical Engineering, Taishan Medical College, Tai'an, 271016, P. R. Chinab College of Materials Science and Engineering, Qingdao University of Science & Technology, Qingdao, 266042, P. R. China |
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| Abstract: | By using Al2(SO4)3 aqueous solution and urea as raw materials, spherical and laminar morphology amorphous aluminum hydroxide (Al(OH)3) ultra-fine powders were synthesized after 120 min reaction time at 150 °C via a microwave-hydrothermal route. It is interesting to note that the spherical particles could be self-encapsulated into the hollow shells which were constructed with the laminar morphology particles to form core-shell structured ultra-fine powders. The microscope analysis revealed that the spherical cores were around 1 μm and the shells were about 2-3 μm in diameter, respectively. To investigate the influencing factors and formation mechanism of the as-obtained core-shell structured amorphous aluminum hydroxide (Al(OH)3) ultra-fine powders, samples subjected to different reaction durations were also studied. |
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| Keywords: | Amorphous materials Powder technology Microstructure |
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