Green silver nanoparticles as a multifunctional sensor for toxic Cd(ii) ions

Abstract

Silver nanoparticles (AgNPs) were synthesized using Allium sativum (AS) extract. The AgNP-AS was able to detect Cd(ii) ions with various techniques such as optical, fluorescence and electrochemical sensing. The limit of detection was found to be 0.277 μM. Silver nanoparticles were able to quantify Cd(ii) ions from environmental samples. The antibacterial activity of AgNP-AS was explored towards waterborne bacteria.

Green synthesized silver NPs: fluorescence sensor for Cl− ions in aqueous solution in biological pH and cell viability study

“…As there is hydrogen bonding between the Cl − ions with the hydroxyl groups of the capping agent, there is effective aggregation induced cluster formation which is indeed the probable cause of fluorescence enhancement. Similar aggregation induced fluorescence enhancement (and generation) is evident in the cases of metal mediated aggregation induced fluorescence generation of silver nanoparticles [43][44][45][46]. For better understanding of the aggregation phenomena some other TEM images of Ag-CS NPs (after treating with chloride ions) are added to the Supplementary Information (Figure S2).…”

“…A few fluorescence based nanosensors have been reported till date. Recently, green synthesized Ag nanoparticles based fluorescence sensors for various metals are being reported in the literature [43][44][45][46].…”

Biocompatible Silver Nanoparticles: Study of the Chemical and Molecular Structure, and the Ability to Interact with Cadmium and Arsenic in Water and Biological Properties

“…We obtained 9 ppm and 12 ppm as LOD and LOQ, respectively. Although the sensitivity is not very high compared with the literature [25][26][27], and thus the use as an optical sensor for cadmium ions is limited, the interaction between the capping molecules and the contaminating ions is genuine and occurs, even at low concentrations. This prerogative is of fundamental importance; in fact, by exploiting this interaction the system has the potential use as a filter to remove pollutants from the water.…”

Phytochemical Process for the Functionalization of Materials with Metal Nanoparticles: Current Trends and Future Perspectives

“…Metal functionalized materials exhibit unique interfacial functionalities, which enhance their sensing performance comparing their individual components. Comparing to various physical and chemical process, plant extract mediated biological process show excellent potential for the synthesis of metal functionalized nanostructures for various sensing performances . The phytochemically fabricated Ag‐ZnO functional nanostructure has excellent gas sensing activity towards ethanol .…”