Effect of Cu Dopant on ZnO Photocatalyst in the Degradation of Navy Blue Textile Dye from Synthetic Wastewater,Chemical Engineering & Technology

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Effect of Cu Dopant on ZnO Photocatalyst in the Degradation of Navy Blue Textile Dye from Synthetic Wastewater
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-03-11 , DOI: 10.1002/ceat.202000458
Kumaran Vetriselvan ₁ , V.R Reshmawhahini ₁ , P Gomathipriya ₁

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The effect of synthesized zinc oxide and copper‐doped zinc oxide in the removal of reactive navy blue dye by photocatalytic action is discussed. ZnO and Cu@ZnO were synthesized in nanoscale by chemical methods and characterized by scanning electron microscopy, energy dispersive X‐ray spectroscopy, and X‐ray diffraction. The decrease in the optical band gap of zinc oxide as a result of copper doping was studied by UV‐vis diffuse reflectance spectroscopy. The prepared compounds were applied for the degradation of reactive navy blue dye in wastewater and the optimum process parameters were obtained. A considerable removal of navy blue dye was achieved by both ZnO and Cu@ZnO with higher removal efficiency by Cu@ZnO. The degradation percentage of dye was further increased by modifying the photoreactor for producing a shorter focal length of light.

中文翻译：

Cu掺杂对合成废水降解藏青染料中ZnO光催化剂的影响。

讨论了合成的氧化锌和铜掺杂的氧化锌在光催化作用下去除活性海军蓝染料的作用。ZnO和Cu @ ZnO是通过化学方法在纳米级合成的，并通过扫描电子显微镜，能量色散X射线光谱和X射线衍射进行表征。通过紫外可见漫反射光谱研究了铜掺杂导致的氧化锌的光学带隙的减小。制备的化合物用于废水中活性海军蓝染料的降解，并获得了最佳工艺参数。ZnO和Cu @ ZnO均可实现海军蓝染料的大量去除，而Cu @ ZnO的去除效率更高。通过修饰光反应器以产生较短的光焦距，可以进一步提高染料的降解率。

更新日期：2021-04-20

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