Abstract Recently, photocatalysis technology has been widely considered as an effective method for solving environmental pollution issues and addressing the energy crisis. Hybrids of layered double hydroxide (LDH) exhibit excellent photocatalytic properties for use in the field of wastewater treatment due to the large interlayer spaces, chemical stability, and low cost. However, pristine LDH suffers from numerous limitations, such as insufficient visible light utilization and a high recombination rate of electron–hole pairs, resulting in degradation of photocatalytic performance. Recent advancements have demonstrated that LDH-based hybrids are suitable nanocomposites for photocatalytic applications when combining LDH with other semiconductors. This article summarizes the progress in the field of LDH-based ternary composites with emphasis on the removal of organic pollutants and heavy metal ions from aqueous media. Moreover, the applications and synthesis of LDH-based ternary composites, including corresponding examples, are discussed. In addition, the interaction mechanisms between photocatalysts and contaminants in water are comprehensively explained. Finally, the review provides insights into the challenges and prospects for the advancement of LDH-based photocatalysts.

中文翻译：

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层状双氢氧化物基三元纳米复合材料光催化水中污染物的研究进展

摘要 近年来，光催化技术被广泛认为是解决环境污染问题和解决能源危机的有效方法。由于层间空间大、化学稳定性好和成本低，层状双氢氧化物 (LDH) 的混合物表现出优异的光催化性能，可用于废水处理领域。然而，原始LDH存在许多局限性，例如可见光利用率不足和电子-空穴对复合率高，导致光催化性能下降。最近的进展表明，当将 LDH 与其他半导体结合时，基于 LDH 的杂化物是适合光催化应用的纳米复合材料。本文总结了基于LDH的三元复合材料领域的进展，重点是去除水介质中的有机污染物和重金属离子。此外，还讨论了基于 LDH 的三元复合材料的应用和合成，包括相应的例子。此外，还全面解释了光催化剂与水中污染物之间的相互作用机制。最后，该综述提供了对基于 LDH 的光催化剂发展的挑战和前景的见解。