纤锌矿晶体结构
掺杂剂
材料科学
光催化
拉曼光谱
兴奋剂
锰
薄膜
带隙
化学工程
晶格常数
亚甲蓝
催化作用
核化学
锌
纳米技术
光电子学
冶金
化学
光学
有机化学
物理
工程类
衍射
作者
William Vallejo,Álvaro Cantillo,Carlos Díaz‐Uribe
出处
期刊:Heliyon
[Elsevier]
日期:2023-10-01
卷期号:9 (10): e20809-e20809
标识
DOI:10.1016/j.heliyon.2023.e20809
摘要
In the herein report, we synthesized ZnO thin films doped with manganese (Mn). We studied the impact of Mn doping loads (1 %, 3 %, 5 % wt.) on physicochemical properties of the compounds. Furthermore, we presented the photocatalytic efficiency in removal of methylene blue dye. The structural assay indicated ZnO conserve the wurtzite crystalline structure after dopant insertion. Furthermore, the crystalline size of catalysts was reduced after dopant incorporation. The SEM analysis showed a change in surface morphology after modification of ZnO thin films. Furthermore, Raman spectroscopy verified the Mn insertion inside the ZnO lattice. After the doping process, band gap was reduced by 16 %, in comparison to bare ZnO. After the photocatalytic test, the doped catalysts showed better performance than bare ZnO in removing MB. The best test showed a kinetics constant value of 2.9 × 10-3 min-1 after 120 min of visible irradiation. Finally, the Mn(5 %):ZnO thin film was suitable after five degradation cycles, and the degradation process efficiency was reduced by 32%.
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