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Enhanced photocatalytic activity of supported Cu-doped ZnO nanostructures prepared by SILAR method

机译：通过Sill方法制备的负载的Cu掺杂ZnO纳米结构的增强的光催化活性

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摘要

Cu-doped ZnO (CZO) nanostructures were prepared on a glass substrate using the successive ionic layer adsorption and reaction (SILAR) method. Copper (Cu) doping has been used as a key to enhance the photocatalytic activity of ZnO. X-ray diffraction (XRD) results revealed the polycrystalline nature of the nanostructures prepared with a hexagonal wurtzite structure of ZnO. The field emission scanning electron microscopy (FE-SEM) analysis showed a change of the morphology from a granular structure to a hexagonal structure and the particle size decreased with increasing copper concentration. The transmittance showed a decrease in the visible range with the increase of copper concentration and a decrease of the optical band gap values was observed. The X-ray photoemission spectroscopy (XPS) analysis indicated that copper was in a divalent state (Cu2+) which confirms the successful incorporation of copper ions into ZnO lattices. The photocatalytic activity of CZO nanostructures prepared by the SILAR method was studied for the first time. The photocatalytic study showed that an increase in copper concentration leads to an increase in degradation efficiency. CZO nanostructures showed an enhancement in degradation efficiency of about 52% compared to undoped ZnO.
机译：使用连续的离子层吸附和反应（Sill）方法在玻璃基板上制备Cu掺杂的ZnO（CZO）纳米结构。铜（Cu）掺杂被用作增强ZnO光催化活性的键。 X射线衍射（XRD）结果表明，用ZnO的六边形纯矿结构制备的纳米结构的多晶性质。场发射扫描电子显微镜（Fe-SEM）分析显示从粒状结构到六边形结构的形态的变化，并且随着铜浓度的增加而降低粒径。随着铜浓度的增加，透射率显示出可见范围的降低，并且观察到光带间隙值的降低。 X射线照相激光体光谱（XPS）分析表明铜处于二价状态（Cu2 +），其证实将铜离子的成功掺入ZnO格子中。通过Sill方法制备的CZO纳米结构的光催化活性首次进行了研究。光催化研究表明，铜浓度的增加导致降解效率的增加。与未掺杂的ZnO相比，CZO纳米结构显示出降解效率的增强约52％。

著录项

  • 来源
    《Optical Materials》 |2021年第1期|110669.1-110669.9|共9页
  • 作者

    Jellal Ilyass; Nouneh Khalid; Toura Hanae; Boutamart Mustapha; Briche Samir; Naja Jamal; Soucase Bernabe Mari; Touhami Mohamed Ebn;

  • 作者单位

    Ibn Tofail Univ Fac Sci Dept Phys Lab Mat Phys & Subat BP 133 Kenitra Morocco;

    Ibn Tofail Univ Fac Sci Dept Phys Lab Mat Phys & Subat BP 133 Kenitra Morocco;

    Univ Politecn Valencia Dept Fis Aplicada Sch Design Engn Cami De Vera Spain|Ibn Tofail Univ Fac Sci Dept Chem Lab Mat & Environm Engn Modeling & Applicat BP 133 Kenitra Morocco;

    Moroccan Fdn Adv Sci Innovat & Res MAScIR Dept Energy Storage & Multifunct Coatings Rabat Morocco;

    Moroccan Fdn Adv Sci Innovat & Res MAScIR Dept Energy Storage & Multifunct Coatings Rabat Morocco;

    Hassan 1 Univ Fac Sci & Technol Appl Chem & Environm BP 577 Route Casablanca Settat Morocco;

    Univ Politecn Valencia Dept Fis Aplicada Sch Design Engn Cami De Vera Spain;

    Ibn Tofail Univ Fac Sci Dept Chem Lab Mat & Environm Engn Modeling & Applicat BP 133 Kenitra Morocco;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ZnO; Nanostructure; Cu-doped; SILAR; Photocatalysis;

    机译：ZnO;纳米结构;Cu-掺杂;Sill;光催化;

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