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CuAl2O4 powder synthesis by sol-gel method and its photodegradation property under visible light irradiation

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Abstract

Nanocrystalline spinel CuAl2O4 powders were prepared by sol-gel method from nitrate Cu(NO3)2·3H2O, Al(NO3)3·9H2O and complex C6H8O7·H2O. Sintering was carried out at 400, 500, 600, 700, 800°C respectively for 2 h in air. The XRD patterns started to appear CuAl2O4 peaks after sintering of 500°C and consist of only CuAl2O4 peaks as spinel crystal after sintering of 700°C. The powders were analyzed by TEM and UV-vis diffuse reflectance spectrum to be round, about 10–30 nm in size and Eg=1.77 eV. Photodegradation property of nanocrystalline CuAl2O4 powders was investigated by using methyl orange as model pollutant and mercury lamp (λ>400 nm) as energy source. The results indicated that CuAl2O4 powders sintered at 700°C had the excellent visible photocatalytic property. Under the irradiation of visible light, methyl orange could be degraded 97% in 120 min.

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Acknowledgments

This work was financially supported by Liaoning Provincial Education Department.

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Authors and Affiliations

  1. State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, Dalian, 116012, China

    Jiang Yanyan & Ning Guiling

  2. School of Chemical Engineering and Materials, Dalian Institute of Light Industry, Dalian, 116034, China

    Jiang Yanyan, Li Jinggang, Sui Xiaotao & Gu Xiumei

  3. Institute of Glass and new Inorganic Materials, Dalian Institute of Light Industry, Dalian, 116034, China

    Wang Chengyu

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  1. Jiang Yanyan
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  2. Li Jinggang
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  3. Sui Xiaotao
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  4. Ning Guiling
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  5. Wang Chengyu
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  6. Gu Xiumei
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Correspondence to Ning Guiling.

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Yanyan, J., Jinggang, L., Xiaotao, S. et al. CuAl2O4 powder synthesis by sol-gel method and its photodegradation property under visible light irradiation. J Sol-Gel Sci Technol 42, 41–45 (2007). https://doi.org/10.1007/s10971-006-1525-3

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  • DOI: https://doi.org/10.1007/s10971-006-1525-3

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