Recent Progress in Functional Materials for Selective Detection and Removal of Mercury(II) Ions

Abstract

Severe disease and environmental pollution derived from heavy metal ions has become one of the major problems in global public health. In particular, mercury(II) as one type of highly poisonous pollutant can destroy human metabolism, central nervous system, and immune system, representing a critical threat to living systems. Therefore, exploitation of new strategies for designing and synthesizing eco‐friendly, efficient, and economical materials for selective detection and removal of Hg2+ is of great importance. Among the various measures for sensing, detection, and removal of mercury ions, advanced functional systems including nanomaterials, polymers, aggregation‐induced emission luminogens, and porous materials have attracted considerable attention over the past years due to their capabilities of real‐time detection, rapid removal, great anti‐interference, quick response, high selectivity, and low limit of detection. In this review, some efficient techniques and strategies for the detection and removal of mercury in aqueous solutions using the abovementioned functional materials are overviewed and the ways in which these advanced material systems are used to tackle the problem of mercury pollution are also discussed.

Multi-functional metal–organic frameworks for detection and removal of water pollutions

“…12 Numerous materials, for instance, small molecules, polymeric materials, nanomaterials and porous materials are exploited for various water contaminants detecting with low limit of detection and high selectivity. [13][14][15] Removal is the basic function in water treatment to eliminate pollutions from aqueous environment via multifarious functional materials. It contains a number of techniques viz.…”

High‐Performance Functional Fe‐MOF for Removing Aflatoxin B1 and Other Organic Pollutants

“…The current state-of-the-art nanotechnology has created numerous opportunities to address the fundamental problems in these fields. [21][22][23][24][25][26] In such circumstances, nanoscale porous materials with high surface areas have drawn much attention in the scientific community during the past few years due to their good performance in mycotoxin adsorption. [27] For example, Xie and co-workers synthesized a magnetic graphene composite, which could be further used to adsorb AFB1 from contaminated oil with a removal rate of 90%.…”

An α-naphtholphthalein-derived colorimetric fluorescent chemoprobe for the portable and visualized monitoring of Hg2+by the hydrolysis mechanism

“…[30][31][32][33][34] Over the past few decades, a large number of small molecule fluorescent chemoprobes have been developed for Hg 2+ detection. [35][36][37][38][39][40] Nevertheless, fluorescent chemoprobes for specific detection of Hg 2+ through a hydrolysis mechanism have been emerging in recent years, [41][42][43][44][45] which is because one chemoprobe for Hg 2+ monitoring via a coordination mode easily suffers from not only the detection conditions but also the redox reactive species such as reactive sulfur species in vitro and in vivo. 46 Generally, it is of great necessity for environmental engineers to curb environmental pollution, especially water pollution, using the scrap metal packing filtration method; for instance, the Fe replacement reaction equation is as follows: Fe + Hg 2+ = Hgk + Fe 2+ , and thus the highly toxic heavy metal cation Hg 2+ -based pollution can be treated by the formation of the elemental Hg.…”