Abstract：Ultra-fine copper powder was prepared by hydrothermal method with modified starch as reducing agent, and the influence of temperature and reducing agent amount on ultra-fine copper powder was investigated. The composition, morphology and average particle size of copper powder were investigated by XRD, SEM and laser particle size analyzer. The results show that when the temperature is 180 °C and 0.7 mol modified starch is added, the near-spherical high-purity ultrafine copper powder is prepared which average particle size is 0.41 μm. The test results can provide reference for the low-carbon green production of ultra-fine copper powder by using other low-cost green environmentally friendly biomass (rice straw, wheat straw, etc.) as raw materials.
2020, Vol. 30 
