Laboratory of Processes, Center of Technology, Federal University of Alagoas, Maceió 57072-900, AL, Brazil.
Department of Biotechnology, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613401, Tamilnadu, India.
Molecules. 2022 Jul 31;27(15):4900. doi: 10.3390/molecules27154900.
Within the frame of this article, briefly but comprehensively, we present the existing knowledge, perspectives, and challenges for the utilization of Layered Double Hydroxides (LDHs) as adsorbents against a plethora of pollutants in aquatic matrixes. The use of LDHs as adsorbents was established by considering their significant physicochemical features, including their textural, structural, morphological, and chemical composition, as well as their method of synthesis, followed by their advantages and disadvantages as remediation media. The utilization of LDHs towards the adsorptive removal of dyes, metals, oxyanions, and emerging pollutants is critically reviewed, while all the reported kinds of interactions that gather the removal are collectively presented. Finally, future perspectives on the topic are discussed. It is expected that this discussion will encourage researchers in the area to seek new ideas for the design, development, and applications of novel LDHs-based nanomaterials as selective adsorbents, and hence to further explore the potential of their utilization also for analytic approaches to detect and monitor various pollutants.
在本文的框架内，我们简要但全面地介绍了利用层状双氢氧化物 (LDHs) 作为吸附剂去除水基质中多种污染物的现有知识、观点和挑战。考虑到 LDHs 的重要物理化学特性，包括其质地、结构、形态和化学成分以及合成方法，将其用作吸附剂已得到确立，随后讨论了它们作为修复介质的优缺点。对 LDHs 用于吸附去除染料、金属、含氧阴离子和新兴污染物的应用进行了批判性评价，同时还综合介绍了所有报道的去除聚集的相互作用类型。最后，讨论了该主题的未来展望。希望这一讨论将鼓励该领域的研究人员寻求新的思路，设计、开发和应用新型基于 LDHs 的纳米材料作为选择性吸附剂，并进一步探索其在分析方法中用于检测和监测各种污染物的潜力。
