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The adverse environmental effects and health burdens associated with dye discharge have necessitated the adoption of photocatalytic degradation as an effective method for addressing water contamination. Recent studies in photocatalysis indicate that nanocomposites incorporating rare earth metals are essential for improving the degradation of dyes in sewage water treatment. This paper reviews the significance of degradation of dyes in the presence of light, highlighting its environmental benefits, sustainable characteristics, and versatility in a wide range of fields. The doping of rare earth metals in nanocomposites significantly enhances photocatalytic activity. This is achieved through an extended absorption range of the photocatalysts, which enhances charge segregation and ensures stable frameworks. REMs function as photosensitisers, creating sub-band-energy levels between the conduction band and valence band of nanocrystals (NCs). The REMs-doped NCs demonstrate enhanced efficiency in dye decomposition relative to conventional methods, attributable to alterations in band structures, improved charge separation, and increased surface area. Multiple characterization methods are utilized to examine the structural and morphological properties of REMs-doped NCs, providing significant insights into their photocatalytic activity. Optimization strategies such as morphology control, surface modification, co-doping, and heterojunction formation are crucial for enhancing the photocatalytic performance of REM-doped NCs in photocatalytic reactions. The roles of various rare earth metals, including cerium, praseodymium, neodymium, samarium, dysprosium, europium, gadolinium, erbium, lanthanum, terbium, and ytterbium, have been examined regarding their potential applications in environmental remediation via photocatalytic degradation of dyes. This review will provide a comprehensive analysis of current progress in the implementation of REMs-doped NCs for the enhancement of dye degradation, contributing to the development of more effective photocatalysts for water purification.

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Enhanced Adsorption and Degradation of Synthetic Dyes Using Rare Earth Metal-Doped Biodegradable Polymers

  • 章节

  • 发表日期：

    2026年

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  • Amanpreet Kaur,
  • Ayasha Negi,
  • Shubhangee Agarwal,
  • Man Vir Singh,
  • Jitendra Pal Singh,
  • Neha Bhatt

摘要

The adverse environmental effects and health burdens associated with dye discharge have necessitated the adoption of photocatalytic degradation as an effective method for addressing water contamination. Recent studies in photocatalysis indicate that nanocomposites incorporating rare earth metals are essential for improving the degradation of dyes in sewage water treatment. This paper reviews the significance of degradation of dyes in the presence of light, highlighting its environmental benefits, sustainable characteristics, and versatility in a wide range of fields. The doping of rare earth metals in nanocomposites significantly enhances photocatalytic activity. This is achieved through an extended absorption range of the photocatalysts, which enhances charge segregation and ensures stable frameworks. REMs function as photosensitisers, creating sub-band-energy levels between the conduction band and valence band of nanocrystals (NCs). The REMs-doped NCs demonstrate enhanced efficiency in dye decomposition relative to conventional methods, attributable to alterations in band structures, improved charge separation, and increased surface area. Multiple characterization methods are utilized to examine the structural and morphological properties of REMs-doped NCs, providing significant insights into their photocatalytic activity. Optimization strategies such as morphology control, surface modification, co-doping, and heterojunction formation are crucial for enhancing the photocatalytic performance of REM-doped NCs in photocatalytic reactions. The roles of various rare earth metals, including cerium, praseodymium, neodymium, samarium, dysprosium, europium, gadolinium, erbium, lanthanum, terbium, and ytterbium, have been examined regarding their potential applications in environmental remediation via photocatalytic degradation of dyes. This review will provide a comprehensive analysis of current progress in the implementation of REMs-doped NCs for the enhancement of dye degradation, contributing to the development of more effective photocatalysts for water purification.