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Hydrothermal synthesis, structure and photocatalytic property of nano-TiO2-MnO2

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Abstract

TiCl4 and MnSO4· H2O as raw materials are hydrolyzed stiochiometrically, following the intermediate of oxide hydrating reacts at 150°C, 0.5 MPa in high-pressure reactor, after filtering, washing and drying, nanometric TiO2-MnO2 (Ti1-X Mn X O2) is prepared. The effects of the reaction temperature and time on nanometric TiO2-MnO2 are also discussed. XRD shows that the product is TiO2-MnO2 with amorphous phase. After being sintered at above 780 °C, it transfers into Ti1-X Mn X O2 with a rutile structure. TEM shows that TiO2-MnO2 is the spherical particle. And the average diameter of the particles is 20 nm. The optical absorbance was determined by UV-265 spectrophotometer after dispersing the sample in the mixture of water and glycerol with the ratio of 1 : 1 equably. It is found that the nano-material possesses the advantages of both nano-TiO2 and nano-MnO2, and it has strong absorption in the UV and visible region. Photodegradation of dyes in an aqueous solution is investigated using nanometricTiO2-MnO2 as a photocatalyst. The results show that after 60 min illumination, the decolorization rate of the acidic red B and acidic black 234 dye can be as high as 100%.

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Authors and Affiliations

  1. College of Chemistry and Environmental Science, Hebei University, 071002, Baoding, China

    Shiwen Ding, Liyong Wang, Shaoyan Zhang, Shujuan Liu, Yanchao Liu & Quanying Kang

  2. Langfang Teachers College, 065000, Langfang, China

    Qiuxiang Zhou

  3. College of Quantity Monitor, Hebei University, 071002, Baoding, China

    Yu Ding

Authors
  1. Shiwen Ding
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  2. Liyong Wang
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  3. Shaoyan Zhang
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  4. Qiuxiang Zhou
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  5. Yu Ding
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  6. Shujuan Liu
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  7. Yanchao Liu
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  8. Quanying Kang
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Correspondence to Shiwen Ding.

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Ding, S., Wang, L., Zhang, S. et al. Hydrothermal synthesis, structure and photocatalytic property of nano-TiO2-MnO2 . Sc. China Ser. B-Chem. 46, 542–548 (2003). https://doi.org/10.1360/02yb0127

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  • DOI: https://doi.org/10.1360/02yb0127

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