The preparation of Zn deposits has been performed by thin-layer electrodeposition in acidic zinc sulphate solution with and without agar, respectively. The morphological and structural characteristics of the deposits have been investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The study shows that the presence of agar has a significant influence on the morphology of the Zn deposits. Under the chosen conditions and without agar, the deposit shows a dendritic morphology, which is made of orderly arranged grains with a preferred orientation in [0001]. In the presence of agar, the deposit shows a dense branch morphology, which has a randomly oriented grain texture and diminished grain size in comparison with that of the dendritic morphology. This work contributes to understanding the influence of agar gel on the pattern formation in thin-layer electrodeposition.

中文翻译：

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琼脂凝胶介质中锌的薄层电沉积

分别在有琼脂和没有琼脂的酸性硫酸锌溶液中通过薄层电沉积来制备锌沉积物。通过扫描电子显微镜 (SEM) 和 X 射线衍射 (XRD) 研究了沉积物的形态和结构特征。研究表明，琼脂的存在对锌矿床的形态有显着影响。在选定的条件下，没有琼脂，沉积物呈树枝状形态，由有序排列的晶粒组成，在[0001]中具有优选取向。在琼脂存在下，沉积物呈现出致密的分支形态，与树枝状形态相比，其具有随机取向的晶粒结构和减小的晶粒尺寸。