【摘要】 探索了紫外-可见光谱分析在纳米颗粒超声分散中的应用:随着超声的进行,其紫外-可见光谱曲线上升;当超声时间达到某一值时,随着超声时间的增加其曲线反而下降.结合分散体系的TEM检测,从其粒径分布图可看到,随着时间的增加,其平均粒径先由大变小,然后再增大.定性地说明了紫外-可见光谱检测与透射电子显微镜检测是一致的.预测了紫外-可见光谱在纳米材料分散过程中的应用.更多还原

【Abstract】 The re-dispersion of nanoparticles in the process was investigated using ultraviolet-visible spectroscopy.With increasing ultrasonic dispersing time,the UV-vis absorption curves of the suspension increased,then decreased again after arrived a maximum which corresponds to the variation of the average diameter of the nanoparticles determined using transmission electronic microscopy.更多还原