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Study on anti-pollution nano-preparation of dimethomorph and its performance

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Chinese Science Bulletin

Abstract

The photocatalysis of nanometer TiO2/Ag was modified by sodium dodecyl sulfate, and its behavior of adsorption for pesticide was investigated on the surface of catalyst. Four kinds of water-solubility preparations were prepared by using TiO2/Ag, modified TiO2/Ag by 0.5% SDS, TiO2 and nothingness as photocatalyst with dimethomorph as effective component. They were besmeared on a piece of glass, and the photocatalytic experiment was done in sunlight. Degradation rates of 1.2% dimethomorph are 71.5%, 68.0%, 45.5% and 28.3%, respectively, when it was degraded in five days. Degradation rate of 10% dimethomorph is 97.3% in eight days in sunlight and t1/2 is 2.8 d in nano-preparation, when it was sprayed on small cabbages after being diluted in rudimental experiments of toxicity for crop. The nano-preparation is of better biologic activity, the virulence of which is 1.235 times as great as original pesticide and 1.245 times as ordinary preparation under the same condition.

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Authors and Affiliations

  1. Institute of Function Materials and Chemistry, Central South University, 410083, Changsha, China

    Jianhui Yan, Kelong Huang & Suqin Liu

  2. Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, 414000, Yueyang, China

    Jianhui Yan

  3. Institute of Dosage Form, Hunan Research Institute of Chemical Industry, 410007, Changsha, China

    Yuelong Wang

Authors
  1. Jianhui Yan
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  2. Kelong Huang
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  3. Yuelong Wang
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  4. Suqin Liu
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Correspondence to Kelong Huang.

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Yan, J., Huang, K., Wang, Y. et al. Study on anti-pollution nano-preparation of dimethomorph and its performance. Chin.Sci.Bull. 50, 108–112 (2005). https://doi.org/10.1007/BF02897511

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  • DOI: https://doi.org/10.1007/BF02897511

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