Synthesis, characterization and photocatalytic properties of spinel CuAl2O4 nanoparticles by a sonochemical method
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- 作者：Weizhong Lv ; Bo Liu ; Qi Qiu ; Fang Wang ; Zhongkuan Luo ; Peixin Zhang ; Shaohui Wei
- 关键词：Nanostructures ; Precipitation ; X-ray diffraction ; Ultrasonics
- 刊名：Journal of Alloys and Compounds
- 出版年：2009
- 出版时间：24 June 2009
- 年：2009
- 卷：479
- 期：1-2
- 页码：480-483
- 全文大小：463 K
文摘
Spinel copper aluminate (CuAl2O4) nanoparticles were synthesized with the aid of sonication by a precursor approach. The precursors were prepared by sonicating an aqueous solution of copper nitrate, aluminium nitrate, and urea. Upon heating at 900 °C for 6 h, the precursor formed nanosized CuAl2O4 particles with an average size of 17 nm and with a surface area of about 110 m2 g−1. The nanosized copper aluminate particles as well as the precursors were characterized by elemental analysis, powder X-ray diffraction, transmission electron microscopy (TEM) image with electron diffraction pattern, thermogravimetric analysis, differential scanning calorimeter (DSC), Fourier transform of infrared spectroscopy (FT-IR), and Brunauer–Emmett–Teller (BET) surface area measurements. The photocatalytic degradation was investigated using methyl orange under the irradiation of Hg lamp (λ > 400 nm). The resulting degradation rates of the methyl orange were measured to be as high as 98 % in 2 h.