Abstract

It is for the first time that silver sulfide colloidal solutions were prepared by chemical deposition from silver nitrate and sodium sulfide solutions in heavy water D₂O. Sodium citrate served as the stabilizer. The sizes of Ag₂S nanoparticles in colloidal solutions were assessed by dynamic light scattering (DLS) measurements and electron microscopy. The silver sulfide nanoparticles in heavy water colloidal solutions prepared from batches having various reagent concentrations had sizes in the range from 3 to 19–20 nm. The increasing silver nitrate concentration and decreasing sodium citrate concentration in the batch only slightly increased the sizes of Ag₂S nanoparticles in the prepared colloidal solutions. The silver sulfide colloidal solutions prepared with heavy water D₂O retained their stability and unchanged nanoparticle sizes when stored for more than 100 days.

中文翻译：

---

重水D 2 O中硫化银胶体溶液的合成

摘要

这是首次通过在重水D ₂ O中由硝酸银和硫化钠溶液化学沉积制备硫化银胶体溶液。柠檬酸钠用作稳定剂。通过动态光散射（DLS）测量和电子显微镜评估胶体溶液中Ag ₂ S纳米粒子的大小。由具有不同试剂浓度的批次制备的重质水胶体溶液中的硫化银纳米粒子的尺寸范围为3至19-20 nm。批次中硝酸银浓度的增加和柠檬酸钠浓度的减少仅稍微增加了Ag ₂的尺寸制备的胶体溶液中的S纳米粒子。用重水D ₂ O制备的硫化银胶体溶液在储存100天以上时仍保持其稳定性和纳米颗粒尺寸不变。