Large-scale fabrication of colloidal nano-sized CuCl solution with high concentration for using as fungicide for plant

Bui Duy Du, Lai Thi Kim Dung, Le Nghiem Anh Tuan, Nguyen Quoc Hien


Synthesis of nano-sized CuCl with Cu concentration from 4,000 to 6,000 ppm dispersed in chitosan solution (nano-sized CuCl/CTS) using CuSO4.5H2O as the precursor and NaHSO3 as the reducing agent in HCl acid medium on large scale of 1.000 kg/batch was carried out. The obtained nano-sized CuCl/CTS samples were characterized by transmission electron microscopy (TEM) and X-ray powder diffraction (XRD). Based on the obtained results, the reaction factors for fabrication of the colloidal nano-sized CuCl/CTS solution with Cu concentration of 5,000 ppm and CuCl nanoparticle size of about 7.7 nm dispersed in 1 % chitosan solution were selected for application in agriculture as a fungicide for plant protection.

Keywords. Nano-sized CuCl, NaHSO3, HCl,chitosan.


Nano-sized CuCl, NaHSO3, HCl, chitosan

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