Scholarlink

<p>The non-homogeneous photo- Fenton technology has been widely used in the field of water treatment due to its environmental friendliness and non-production of iron sludge. However, the recombination of electron–hole pairs limits the catalytic activity of photo- Fenton materials. In this study, a simple hydrothermal method was designed to prepare Cu-doped ZnFe<sub>2</sub>O<sub>4</sub> for the efficient removal of tetracycline The material composition and optical properties of the catalyst were characterized using x-ray diffractio scanning electron microscopy transmission electron microscopy (TEM) and x-ray photoelectron spectroscopy. The results showed that the doping of transition metals was introduced to significantly increase the catalytic activity of the catalyst. At a pollutant concentration of 50&#xa0;mg L<sup>−1</sup>, ZnFe<sub>2</sub>O<sub>4</sub> doped with 1% Cu degraded 97.9% of tetracycline in 60&#xa0;min with a degradation rate of 0.0498&#xa0;min<sup>−1</sup>, which was 12.8 times higher than that of pure ZnFe<sub>2</sub>O<sub>4</sub>. O<sub>2</sub><sup>−</sup> and ·OH were found to be the main reactive oxygen species (ROS) causing the degradation. The photo-Fenton efficiency of Cu/ZnFe<sub>2</sub>O<sub>4</sub> is still very efficient after five tetracycline degradations (87.2%), and the crystal structure is stable, indicating good stability and the possibility of recycling in photo-Fenton applications.</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

Photoelectrochemical and optical fenton properties of Cu-doped ZnFe2O4 composites synthesized by hydrothermal method

  • 期刊论文

  • 发表日期：

    2025年1月9日

查看全文
  • Zhi-Ming Li,
  • Zhi-Qiang Wei,
  • Mei-Jie Ding,
  • Qing-Song Yu,
  • Jun Zhu,
  • Jing-Long Bai,
  • Hui-Ning Zhang

摘要

The non-homogeneous photo- Fenton technology has been widely used in the field of water treatment due to its environmental friendliness and non-production of iron sludge. However, the recombination of electron–hole pairs limits the catalytic activity of photo- Fenton materials. In this study, a simple hydrothermal method was designed to prepare Cu-doped ZnFe2O4 for the efficient removal of tetracycline The material composition and optical properties of the catalyst were characterized using x-ray diffractio scanning electron microscopy transmission electron microscopy (TEM) and x-ray photoelectron spectroscopy. The results showed that the doping of transition metals was introduced to significantly increase the catalytic activity of the catalyst. At a pollutant concentration of 50 mg L−1, ZnFe2O4 doped with 1% Cu degraded 97.9% of tetracycline in 60 min with a degradation rate of 0.0498 min−1, which was 12.8 times higher than that of pure ZnFe2O4. O2− and ·OH were found to be the main reactive oxygen species (ROS) causing the degradation. The photo-Fenton efficiency of Cu/ZnFe2O4 is still very efficient after five tetracycline degradations (87.2%), and the crystal structure is stable, indicating good stability and the possibility of recycling in photo-Fenton applications.