<p>To address environmental concerns arising from the extensive use of 4-nitrophenol in modern industrial development, we propose a method for degrading 4-nitrophenol (4-NP) by incorporating rare earth elements and silver bromide into fluorescent materials. Through a simple two-step synthesis, we designed and prepared a NaLa(MoO<sub>4</sub>)<sub>2</sub>: Ce<sup>3+</sup>/AgBr dual-functional composite material. Its mechanism involves modifying the material with AgBr as the primary catalyst. This study utilizes a molybdate matrix as the material’s base framework, providing a stable foundation for the catalyst’s existence. The presence of Ce<sup>3+</sup> enhances electron transfer within the composite, accelerating the degradation reaction process. The resulting composite exhibits exceptional catalytic degradation capability, efficiently converting 4-nitrophenol to 4-aminophenol within 1.5&#xa0;min (kapp = 0.901). It demonstrates outstanding degradation stability in repeated experiments while maintaining excellent material stability. This work provides valuable insights for future wastewater treatment and environmental protection applications.</p>

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High-efficiency reduction of 4-nitrophenol: application of rare-earth-doped composite material NaLa(MoO4)2:Ce3+/AgBr

  • Kexin Sun,
  • Shaodong Fan,
  • Qiuchan Zhong,
  • Guanghuan Li,
  • Mengmeng Li,
  • Guobiao He,
  • Shili Hou

摘要

To address environmental concerns arising from the extensive use of 4-nitrophenol in modern industrial development, we propose a method for degrading 4-nitrophenol (4-NP) by incorporating rare earth elements and silver bromide into fluorescent materials. Through a simple two-step synthesis, we designed and prepared a NaLa(MoO4)2: Ce3+/AgBr dual-functional composite material. Its mechanism involves modifying the material with AgBr as the primary catalyst. This study utilizes a molybdate matrix as the material’s base framework, providing a stable foundation for the catalyst’s existence. The presence of Ce3+ enhances electron transfer within the composite, accelerating the degradation reaction process. The resulting composite exhibits exceptional catalytic degradation capability, efficiently converting 4-nitrophenol to 4-aminophenol within 1.5 min (kapp = 0.901). It demonstrates outstanding degradation stability in repeated experiments while maintaining excellent material stability. This work provides valuable insights for future wastewater treatment and environmental protection applications.