Scholarlink

<p>The remnant polarization of ferroelectric films is a property that can be manipulated by the application of external electric fields and used in the photodegradation of organic pollutants. In this study, the synthesis of copper (Cu) doped K<sub>0.5</sub>Na<sub>0.5</sub>NbO<sub>3</sub> (KNN) thin films obtained by the sol-gel method and grown on glass-ITO substrates by spin coating is presented, to evaluate the efficiency in the photocatalytic degradation of methylene blue (MB). Films with different Cu concentrations (0.25%, 0.5%, 1%) are synthesized and their structural, morphological, ferroelectric, and photocatalytic properties are studied. For this, characterizations are carried out by X-ray diffraction (XRD), Raman spectroscopy, atomic force microscopy (AFM), piezoelectric force microscopy, and photocatalytic performance with the help of UV-Vis spectroscopy measurements. The results show that Cu doping shows the largest crystallite size at 0.25% of Cu. The sample with 1% Cu showed the best performance in the photodegradation of methylene blue, up to 35% with negative polarization. These results suggest that thin films of Cu-doped KNN, obtained by the sol-gel method, offer an alternative for the degradation of organic pollutants in environmental applications by taking advantage of their ferroelectric properties.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Cu-doped K0.5Na0.5NbO3 films obtained by the sol-gel method and their application in the photodegradation of methylene blue

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月27日

查看全文
  • Luis Daniel García Peralta,
  • Ma. Guadalupe Rivera-Ruedas,
  • Ebelia Del Angel-Meráz,
  • Fátima Montserrat Castañeda de la Hoya,
  • Christian Iván Enriquez-Flores,
  • José Martín Yáñez-Limón

摘要

The remnant polarization of ferroelectric films is a property that can be manipulated by the application of external electric fields and used in the photodegradation of organic pollutants. In this study, the synthesis of copper (Cu) doped K0.5Na0.5NbO3 (KNN) thin films obtained by the sol-gel method and grown on glass-ITO substrates by spin coating is presented, to evaluate the efficiency in the photocatalytic degradation of methylene blue (MB). Films with different Cu concentrations (0.25%, 0.5%, 1%) are synthesized and their structural, morphological, ferroelectric, and photocatalytic properties are studied. For this, characterizations are carried out by X-ray diffraction (XRD), Raman spectroscopy, atomic force microscopy (AFM), piezoelectric force microscopy, and photocatalytic performance with the help of UV-Vis spectroscopy measurements. The results show that Cu doping shows the largest crystallite size at 0.25% of Cu. The sample with 1% Cu showed the best performance in the photodegradation of methylene blue, up to 35% with negative polarization. These results suggest that thin films of Cu-doped KNN, obtained by the sol-gel method, offer an alternative for the degradation of organic pollutants in environmental applications by taking advantage of their ferroelectric properties.