Co: ZnS (0, 6, 12 and 18 at. -%) nanostructures are mounted on glass substrates by chemical bath deposition (CBD) technique. X-ray diffraction (XRD) analysis shows cubic structure. Compositional study using X-ray photoelectron spectroscopy (XPS) establishes chemical states of Zn²⁺, S²⁻, Co²⁺ and some impurity elements such as C and O. Morphological study reveals the granular shape of the as-grown films. The average optical transmission is greater than 70% in the visible range. A band gap of about 3.70 eV is obtained. A slight enhancement of electrical properties is observed for a doping ratio equal to 12 at.-%. The photocatalytic activity of undoped ZnS and ZnS:(18 at.-% Co) is evaluated under visible light irradiation by following the discoloration of methylene blue. The photocatalytic efficiency achieved by ZnS:(18 at.-% Co) after 4 h of illumination is 69%.

通过化学浴沉积（CBD）技术将Co：ZnS（0、6、12和18at .-％）纳米结构安装在玻璃基板上。X射线衍射（XRD）分析显示立方结构。使用X射线光电子能谱（XPS）进行成分研究可确定Zn 2 ⁺，S ²⁻，Co ^2+的化学状态形态学研究表明，成膜后的薄膜呈颗粒状。在可见光范围内，平均光透射率大于70％。获得约3.70 eV的带隙。对于等于12原子％的掺杂率，观察到电性能的轻微提高。通过跟随亚甲基蓝的变色，在可见光照射下评估未掺杂的ZnS和ZnS：（18 at .-％Co）的光催化活性。光照4 h后，ZnS：（18 at .-％Co）达到的光催化效率为69％。