Environmental Sensing and Detection of Toxic Heavy Metals by Metal Organic Frameworks-Based Electrochemical Sensors
Komal Rızwan, Muhammad Bilal
Abstract
Heavy metals ions, including cadmium, arsenic, lead, and mercury, found in wastewater pose serious health problem to humans when their concentration rises to standards set by the World Health Organization. Thus, cost-effective and quick instruments to assess toxic heavy metals ions are required. Through electrochemical sensing, heavy metals can be sensed in a promising manner. Metal organic frameworks (MOFs) are porous, polymeric, and crystalline-like architectures generated by coordinating metals and organic bridging. Because of their unique characteristics, MOFs are explored for the detection of environmental-based effluents, including toxic heavy metal ions, organic contaminants, and various gases. This chapter reports on the development of MOF-based sensing cues with a focus on electro-chemical sensors to detect a number of toxic heavy metals. The sensors have exhibited a potential performance in heavy metal detection. MOF-based composites also showed enhanced sensor efficacy.