We report the synthesis of Au nano- and microparticles that relies on α-D-glucose (C₆H₁₂O₆) as the reducer and stabilizer in a Rosette cell under 20 kHz ultrasound irradiation. The chemical and physical effects of ultrasonic irradiation on the synthesis were investigated. The results showed that an optimum pH is required for the formation of insoluble Au(0) particles. Upon irradiation, low pH yielded Au nanoparticles while high pH resulted in microparticles. The Au surface capping by α-D-glucose hydroxyl and carbonyl groups was confirmed by Fourier transform infrared (FT-IR) spectroscopy. X-ray diffraction (XRD) analysis indicated that the Au particles crystallize within the face-centered-cubic (FCC) cell lattice. Moreover, continuous sonication reduced larger amounts of the Au precursor compared to the intermittent mode. Furthermore, tuning sonication time and mode influences the particle size and porosity as characterized by scanning and transmission electron microscopy. Our results shed a new light into the importance of the experimental and ultrasound parameters in obtaining Au particles of desired features through sonochemistry.

我们报道了在 20 kHz 超声波照射下，在花环细胞中依赖 α-D-葡萄糖 (C ₆ H ₁₂ O ₆ ) 作为还原剂和稳定剂的金纳米颗粒和微米颗粒的合成。研究了超声波辐射对合成的化学和物理影响。结果表明，不溶性 Au(0) 颗粒的形成需要最佳 pH 值。照射后，低 pH 值产生金纳米颗粒，而高 pH 值产生微米颗粒。通过傅里叶变换红外（FT-IR）光谱证实了 α-D-葡萄糖羟基和羰基对金表面的覆盖。 X 射线衍射 (XRD) 分析表明，Au 颗粒在面心立方 (FCC) 晶胞晶格内结晶。此外，与间歇模式相比，连续超声处理减少了更大量的金前体。此外，调整超声处理时间和模式会影响扫描和透射电子显微镜表征的粒径和孔隙率。我们的结果为通过声化学获得具有所需特征的金颗粒中实验和超声参数的重要性提供了新的认识。