Silver meso-particles (SMPs) were successfully synthesized by a simple chemical method in the presence of L-ascorbic acid reducing agent and silver ions precursor in AgNO ₃. Silver meso-structures of different topographies have been synthesized by varying the concentration of the reactants such as the L-AA concentration or the Ag${}^{+}$ ions concentration as well as by varying the temperature reaction. The structural morphology and optical properties of SMPs were thoroughly investigated by employing different characterization methods such as ultraviolet–visible spectroscopy (UV–Vis), X-ray spectroscopy and transmission electron microscopy (TEM). The results showed that the smaller the concentration of Ag${}^{+}$ ions and the greater the concentration of reducing agent L-AA, the more hierarchical SMPs. This investigation is explained by the mechanism of formation and development of SMPs in the solution. The surface-enhanced Raman scattering (SERS) effects of the synthesized SMPSs are also estimated by using the detection of the Rhodamine B (RB) pigments. The investigation confirmed that the highly branched silver meso-structures exhibit a higher efficiency in enhancing surface Raman scattering in comparison with the less branched ones. The enhancement factor EF scattering at the featured peaks for 10⁻⁶ M RB on the SMPs substrate are calculated around 10⁴. Our work might give a good reference for the fabrication of SMPs, which are suitable to be applied in sensing.

在L-抗坏血酸还原剂和AgNO _{3 中的}银离子前体存在下，通过简单的化学方法成功地合成了银介观颗粒(SMP) 。通过改变反应物的浓度，如 L-AA 浓度或 Ag，合成了不同形貌的银介观结构${}^{+}$离子浓度以及通过改变反应温度。通过采用不同的表征方法，如紫外-可见光谱 (UV-Vis)、X 射线光谱和透射电子显微镜 (TEM)，对 SMP 的结构形态和光学性质进行了彻底研究。结果表明，Ag浓度越小${}^{+}$离子和还原剂 L-AA 的浓度越大，SMP 的分级越多。该研究通过溶液中 SMP 的形成和发展机制来解释。合成的 SMPS 的表面增强拉曼散射 (SERS) 效应也可以通过检测罗丹明 B (RB) 颜料来估计。研究证实，与较少支化的银细观结构相比，高度支化的银介观结构在增强表面拉曼散射方面表现出更高的效率。SMP 基板上10 ^-6 M RB的特征峰处的增强因子 EF 散射计算约为 10 ⁴。我们的工作可能为适合应用于传感的 SMP 的制造提供很好的参考。