The sonochemical formation of Au seeds and their autocatalytic growth to Au nanorods were investigated in a one-pot as a function of concentration of HAuCl₄, AgNO₃, and ascorbic acid (AA). The effects of ultrasonic power and irradiation time were also investigated. In addition, the formation rate of Au nanorods was analyzed by monitoring the extinction at 400 nm by UV–Vis spectroscopy and compared with the growth behavior of Au seeds to nanorods. Most of the reaction conditions affected the yield, size, and shape of Au nanorods formed. It was confirmed that the concentration balance between HAuCl₄ and AA was important to proceed the formation of Au seeds and nanorods effectively. The formation rate became faster with increasing AA concentration and dog-bone shaped nanorods were formed at high AA concentration. It was also confirmed a unique phenomenon that the shape of Au nanorods changed even after the completion of the reduction of Au(I) in the case of short-time ultrasonic irradiation for Au seed formation.

一锅法研究了Au种子的声化学形成及其自催化生长为Au纳米棒的过程，该过程与HAuCl ₄，AgNO ₃和抗坏血酸（AA）的浓度有关。还研究了超声功率和照射时间的影响。此外，通过监测紫外-可见光谱在400 nm处的消光，分析了金纳米棒的形成速率，并与金种子向纳米棒的生长行为进行了比较。大多数反应条件都会影响金纳米棒的产量，大小和形状。确认HAuCl ₄之间的浓度平衡而AA对于有效地形成金种子和纳米棒很重要。随着AA浓度的增加，形成速率变得更快，并且在高AA浓度下形成了狗骨形纳米棒。还证实了独特的现象，即在短时超声波照射下形成金晶种的情况下，金纳米棒的形状甚至在金（I）还原完成后也发生了变化。