An overview of the recent developments on Hg<sup>2+</sup> recognition

Mahato, Prasenjit; Saha, Sukdeb; Das, Priyadip; Agarwalla, Hridesh; Das, Amitava

doi:10.1039/c4ra03594a

Cited by 181 publications

(70 citation statements)

References 131 publications

(125 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…to elementary Hg using Ag NPs, in the presence of H 2 O 2 , have been reported (Yan et al 2014). Numerous other colorimetric techniques based on organic dyes, metal complexes, and polymers have also been developed over the years (Yan et al 2014;Mahato et al 2014). However, the major disadvantages in most of the nanoparticles synthesis routes include use of toxic reducing chemicals, poor control over size distribution, and dispersion of the nanoparticles in the polymer host (Gasaymeh et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

et al. 2015

View full text Add to dashboard Cite

Poly(n-vinyl-2-pyrrolidone)-stabilizedgold nanoparticles (PVP-Au-NPs) have been synthesized via a green-60 Co-Gamma radiolytic route and employed as a localized surface plasmon resonance (LSPR)-based optical sensor for estimation of trace quantities of Hg 2? ion in aqueous solutions. The in situ generated PVP-Au-NPs were characterized using UV-vis spectroscopy, transmission electron microscopy, and particle size analysis techniques. Reaction conditions were optimized to obtain uniformly dispersed PVP-Au-NPs with average particle size of 7.1 ± 1.6 nm (±s), which exhibited a narrow LSPR band at *527 nm. The decrease in LSPR band intensity of PVP-Au-NPs with increase in Hg 2? ion concentration was found to be linear in the Hg 2? ion concentration range of 0-100 nM. The LSPR-based PVP-Au-NPs optical sensor system was found to be selective for Hg 2? and independent of interference from other metal ions such as Ca 2?, Cu 2? , Cd 2? , and Fe 2? up to a concentration of 500 nM.

show abstract

Section: Introductionmentioning

confidence: 99%

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Due to their inherent toxicity, Hg(II) species have to be continuously monitored; therefore, many chemical reporters have been studied. [37] There are very few colorimetric or fluorogenic probes for MeHg 1 , which is in strong contrast to the enormous interest in the detection of MeHg 1 in living systems. [38] There were no chemical probes nor dosimeters able to detect the speciation of Hg 21 and MeHg 1 when we started to work on the chemical sensors for mercury(II) species, and until recently, the development of a molecular probe for the selective detection of MeHg 1 in the presence of Hg 21 was considered a "mission impossible" to accomplish.…”

Section: Discriminating Methyl Mercury(ii) From Mercury(ii) Cationmentioning

confidence: 99%

Detection of Contaminants of High Environmental Impact by Means of Fluorogenic Probes

García‐Calvo

Calvo-Gredilla

Ibáñez-Llorente

et al. 2016

The Chemical Record

View full text Add to dashboard Cite

This personal account describes our contribution to the design of selective fluorogenic probes for contaminants of high environmental impact. For this purpose, we have developed a new family of highly versatile fluorogenic reagents that were able to show large differences in their fluorescence in the presence of selected analytes. They were used in the preparation of fluorogenic probes for the detection of contaminants of high environmental impact which currently have no good solutions: phosphorylating agents, such as chemical weapons; methyl mercury(II); the cyanide anion; amino-acid metabolites, such as doping substances; and biogenic amine mimics, such as drugs of abuse and recreational drugs. The development of new materials for specific sensing was achieved by anchoring selected probes to silica nanomaterials, suitable for the selective detection of organic analytes in water for immediate application to toxicological or environmental purposes.

show abstract

“…To date, there are only a few reviews for optical detection of Hg 2+ by using fluorescent organic compounds as optical sensors [3,26,27]. And one of them discussed the application of nanomaterials (CdTe and InP nanocrystals, Au NPs and Au nanorods) as Hg 2+ optical sensors [3].…”

Section: Science China Materialsmentioning

confidence: 99%

Recent developments on nanomaterials-based optical sensors for Hg2+ detection

Duan

Zhan

2015

Sci. China Mater.

View full text Add to dashboard Cite

Mercuric ion (Hg 2+ ), released from both natural and industrial sources, has severe adverse effects on human health and the environment even at very low concentrations. It is very important to develop a rapid and economical method for the detection of Hg 2+ with high sensitivity and selectivity. Nanomaterials with unique size and shape-dependent optical properties are attractive sensing materials. The application of nanomaterials to design optical sensors for Hg 2+ provides a powerful method for the trace detection of Hg 2+ in the environment, because these optical sensors are simple, rapidly responsive, cost-effective and highly sensitive. This review summarizes the recent advances on the development of optical assays for Hg 2+ in aqueous solution by using functionalized nanomaterials (including noble metal nanoparticles, fluorescent metal nanoclusters, semiconductor quantum dots and carbon nanodots). Detection strategies based on the Hg 2+ -induced changes in spectral absorbance, fluorescence intensity and surface-enhanced Raman scattering signals were described. And the design principles for each optical assay were presented. In addition, the future challenge and the prospect of the development of nanomaterial optical sensors for Hg 2+ detection were also discussed.

show abstract

An overview of the recent developments on Hg²⁺ recognition

Cited by 181 publications

References 131 publications

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

Detection of Contaminants of High Environmental Impact by Means of Fluorogenic Probes

Recent developments on nanomaterials-based optical sensors for Hg2+ detection

Contact Info

Product

Resources

About

An overview of the recent developments on Hg2+ recognition

Cited by 181 publications

References 131 publications

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

Radiation synthesized poly(n-vinyl-2-pyrrolidone)-stabilized-gold nanoparticles as LSPR-based optical sensor for mercury ions estimation

Detection of Contaminants of High Environmental Impact by Means of Fluorogenic Probes

Recent developments on nanomaterials-based optical sensors for Hg2+ detection

Contact Info

Product

Resources

About

An overview of the recent developments on Hg²⁺ recognition