Functionalized silver nanoparticles probe for visual colorimetric sensing of mercury
Source abstract
Abstract
Abstract We have investigated the chemical synthesis of gelatin functionalized silver nanoparticles (AgNPs) and their physico-chemical characteristics for sensing of mercury (II) ions (Hg 2+ ). Gelatin functionalized AgNPs were prepared by chemical reduction method. The colorimetric sensing of Hg 2+ was carried out in three different phases including solution, hydrogel network and paper substrate. AgNPs tend to aggregate upon addition of Hg 2+ and exhibit a color change from yellow to colorless due to aggregation of AgNPs and leads to the formation of Ag/Hg amalgam. This nanosensor probe exhibited good sensitivity for the detection of Hg 2+ with detection limit of (LOD) 25 nM. In addition, we have studied the sensing of Hg 2+ using disposable paper strips and 3D hydrogel matrix. In both cases, the sensor exhibits similar characteristics with respect to sensitivity and selectivity for Hg 2+ detection under optimized conditions. This gelatin functionalized AgNPs probe is highly versatile and promising for various applications including sensor, antimicrobial coatings, catalysis and food monitoring.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mercury impact and mitigation studies · Molecular Sensors and Ion Detection · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
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