改性淀粉还原Cu2O制备超细铜粉

Preparation of ultrafine copper powder by modified starch reduction of Cu2O

以改性淀粉为还原剂,采用水热法制备超细铜粉,探究了温度和还原剂的量对超细铜粉的影响。借助XRD、SEM、激光粒度分析仪考察了铜粉的成分、微观形貌、平均粒径。结果表明,当温度为180℃,加入0.7 mol改性淀粉,可制备出平均粒径为0.41μm、近球形的超细铜粉。实验结果可为以其他低成本绿色环保生物质(稻秆、麦秸等)为原料,实现超细铜粉低碳化绿色生产提供参考。

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 ℃ 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.