Department of Chemistry, Division of Science and Technology, University of Education, Lahore, 54000, Lahore, Pakistan.
Department of Chemistry, The University of Lahore, 54000, Lahore, Pakistan; Department of Chemistry, University of Malaya, Kuala Lumpur, 50603, Malaysia.
Chemosphere. 2023 Mar;318:137920. doi: 10.1016/j.chemosphere.2023.137920. Epub 2023 Jan 20.
Water bodies are being polluted rapidly by disposal of toxic chemicals with their huge entrance into drinking water supply chain. Among these pollutants, heavy metal ions (HMIs) are the most challenging one due to their non-biodegradability, toxicity, and ability to biologically hoard in ecological systems, thus posing a foremost danger to human health. This can be addressed by robust, sensitive, selective, and reliable sensing of metal ions which can be achieved by Metal organic frameworks (MOF) based electrochemical sensors. In the present era, MOFs have caught greater interest in a variety of applications including sensing of hazardous pollutants such as heavy metal ions. So, in this review article, types, synthesis and working mechanism of MOF based sensors is explained to give general overview with updated literature. First time, detailed study is done for sensing of metal ions such as chromium, mercury, zinc, copper, manganese, palladium, lead, iron, cadmium and lanthanide by MOFs based electrochemical sensors. The use of MOFs as electrochemical sensors has attractive success story along with some challenges of the area. Considering these challenges, we attempted to highlight the milestone achieved and shortcomings along with future prospective of the MOFs for employing it in electrochemical sensing devices for HMIs. Finally, challenges and future prospects have been discussed to promote the development of MOFs-based sensors in future.
水体正迅速受到有毒化学物质的污染，这些化学物质大量进入饮用水供应链。在这些污染物中，重金属离子（HMIs）是最具挑战性的，因为它们不可生物降解、毒性大，并且能够在生态系统中生物蓄积，从而对人类健康构成最大威胁。通过基于金属有机骨架（MOF）的电化学传感器对金属离子进行稳健、灵敏、选择性和可靠的传感，可以解决这个问题。在当前时代，MOF 在各种应用中引起了更大的兴趣，包括对危险污染物（如重金属离子）的传感。因此，在这篇综述文章中，解释了基于 MOF 的传感器的类型、合成和工作机制，以提供带有最新文献的概述。这是第一次对基于 MOF 的电化学传感器对铬、汞、锌、铜、锰、钯、铅、铁、镉和镧系元素等金属离子的传感进行详细研究。MOF 作为电化学传感器的使用具有引人注目的成功故事，同时也存在该领域的一些挑战。考虑到这些挑战，我们试图强调在将 MOF 应用于 HMIs 的电化学传感设备方面所取得的里程碑和缺点以及未来的前景。最后，讨论了挑战和未来前景，以促进未来基于 MOF 的传感器的发展。
