Ag2S/ZnS nanocomposites were synthesized using a novel method, and their structural features and optical properties were also investigated. For the structural investigation of the core/shell-like nanocomposites, X-ray powder diffraction technique (XRD) and scanning electron microscopy (SEM) were used. Optical features of Ag2S/ZnS nanocomposites were studied by UV-Vis absorption and photoluminescence spectroscopy (PL). According to the SEM images, the sizes of the Ag2S, ZnS nanoparticles and Ag2S/ZnS core/shell-like nanocomposites are in the region of the 10–15; 25–50 and 15–80 nm, respectively. Furthermore, the absorption spectroscopy indicates that the bandgap of Ag2S/ZnS nanocomposites is approximately 2.4 eV. By comparison of the intensities of the emission spectra, it was clear that the intensity of Ag2S/ZnS is much lower than that of ZnS.

中文翻译：

---

Ag2S/ZnS 纳米复合材料：合成、结构和光学性质

银2采用一种新方法合成了 S/ZnS 纳米复合材料，并对其结构特征和光学性质进行了研究。对于核/壳状纳米复合材料的结构研究，使用了 X 射线粉末衍射技术 (XRD) 和扫描电子显微镜 (SEM)。Ag的光学特性2通过紫外-可见吸收和光致发光光谱 (PL) 研究了 S/ZnS 纳米复合材料。根据 SEM 图像，Ag 的大小2S、ZnS 纳米粒子和 Ag2S/ZnS 核/壳状纳米复合材料在 10-15 范围内；分别为 25-50 和 15-80 nm。此外，吸收光谱表明 Ag 的带隙2S/ZnS 纳米复合材料约为 2.4 eV。通过比较发射光谱的强度，很明显，Ag 的强度2S/ZnS远低于ZnS。