Ratiometric detection of heavy metal ions using fluorescent carbon dots

Yarur, Francisco; Macairan, Jun‐Ray; Naccache, Rafik

doi:10.1039/c8en01418c

Cited by 123 publications

(83 citation statements)

References 56 publications

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“…Purification of wastewater using novel environmentally friendly methods is becoming a hot research topic from the last few decades (Yu et al, 2017;Bolisetty et al, 2019). Several classical methods are reported in the literature for the selective detection of Hg 2+ and Pb 2+ , including atomic absorption spectrometry, ICP-MS method (Karunasagar et al, 1998;Fong et al, 2007), GC-atomic fluorescence (Nevado et al, 2005), HPLC (Kodamatani et al, 2012), Fluorescence sensor (Chang et al, 2007;Chiang et al, 2008), conjugated polymers (Liu et al, 2007), ratiometric (Yarur et al, 2019), oligonucleotides (Ono and Togashi, 2004;Lin et al, 2011;Lu et al, 2013), proteins (Guo and Irudayaraj, 2011), bioluminescent bacterial sensors (Durand et al, 2015), and electrochemical sensing (Zhu et al, 2017) etc. All the above-mentioned methods used expensive instrumentation, time-consuming sample preparation steps, and more laborious.…”

Section: Introductionmentioning

confidence: 99%

Dual Colorimetric Sensor for Hg2+/Pb2+ and an Efficient Catalyst Based on Silver Nanoparticles Mediating by the Root Extract of Bistorta amplexicaulis

2020

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Environmental pollution derivated from toxic metals and organic toxins is becoming a serious issue worldwide because of their harmful effects on the ecosystem and human health. Here we are reporting an extremely selective and cost-effective colorimetric sensor for simultaneous recognition of Hg 2+ and Pb 2+ by using green synthesized silver nanoparticles (AgNPs) mediated from the environmental friendly roots extract of Bistorta amplexicaulis. Biogenic synthesized AgNPs were well-characterized by various spectroscopic techniques e.g., UV-vis, FT-IR, XRD, AFM, and Zetasizer. The photophysical potential of synthesized AgNPs toward common metal cations was explored via absorption spectroscopy and colorimetric assay. The hypsochromic shift in the SPR band of AgNPs can easily be detected through naked eyes vision from dark brown to light yellow in the case of Hg 2+. A substantial reduction in the absorbance of AgNPs was recorded upon mixing with Pb 2+. AgNPs based colorimetric sensor is highly sensitive toward Hg 2+ and Pb 2+ with a limit of detection (LOD) of 8.0 × 10 −7 M and 2.0 × 10 −7 M for Hg 2+ and Pb 2+ , respectively. Furthermore, AgNPs showed promising catalytic activity for the degradation of methyl orange dye. These results demonstrate that Bistorta amplexicaulis stabilized silver nanoparticles have potential applications as a colorimetric sensor and an effective catalyst for the degradation of methyl orange.

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Section: Introductionmentioning

confidence: 99%

Dual Colorimetric Sensor for Hg2+/Pb2+ and an Efficient Catalyst Based on Silver Nanoparticles Mediating by the Root Extract of Bistorta amplexicaulis

2020

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“…17 As a result, various types of uorescent probes such as organic dyes, magnetic nanoparticles (MNPs), semiconductor quantum dots (QDs), carbon dots (CDs), uorescent metal nanoclusters (NCs), and uorescent metal organic frameworks (MOFs) have been designed and prepared to determine Cu 2+ ion. [18][19][20][21][22][23][24][25][26][27] Since rst reported in 2000, MNPs are extensively used in the eld of nanotechnology for its nonhazardous feature, strong magnetization values, superparamagnetic property, active surface that can easily assembled of biological soluble structure and targeting, imaging, and therapeutic molecules. 22 Unlike organic uorescent dyes, QDs are semiconductor particles which exhibit high photochemical stability, excellent resistance to chemical degradation, outstanding photodegradation and extremely large Stokes shi.…”

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confidence: 99%

A coumarin-containing Schiff base fluorescent probe with AIE effect for the copper(ii) ion

et al. 2020

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“…To discriminate multi-MHs in CD-based sensors, other detection techniques like colorimetric changes, UV-VIS absorbance spectrophotometry also could be combined with fluorescence detection [112]. Naccache et al [113] reported the use of a dual absorbing/fluorescing CD system to detect four HM ions of Co(II), Fe(III), Hg(II), and Pb(II). In fluorescence assays, Co(II), Fe(III), Hg(II), and Pb(II) could be detected by ratiometric analysis based on the difference in the response of the blue and red fluorescence bands.…”

Section: Combination With Other Techniquesmentioning

confidence: 99%

Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals

2020

Nanophotonics

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Heavy metal (HM) pollution is a major global concern. Carbon dots (CDs) have demonstrated unique properties as sensing platforms for HMs detection. This review summarizes the progress made in recent years in fluorescence methods to determine HMs and their species using CDs. First, the strategies to synthesize and purify CDs are reviewed. The photoluminescence principles of CDs and their sensing mechanisms as HMs sensors are then summarized. The binding strategies between CDs and HMs are proposed to provide salient principles to design desirable CD-based HMs sensors. The preparation and merits of “turn-on” and ratiometric CDs for HMs detection with higher accuracy are discussed compared with commonly used “turn-off” sensors. Subsequently, the progress on detecting single HM ions, multi-HMs, and different metal species in solution, and the development of gel/solid-state sensor platforms such as paper-based devices, sensor arrays, hydrogels, polymer films, and ion-imprinted polymers are critically accessed. Furthermore, the advances in the cell, bacterial, plant, and animal bioimaging of HMs with CDs as promising bioimaging reagents are presented. Finally, the challenges and prospects of CDs as HMs sensors in future investigations are discussed.

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Ratiometric detection of heavy metal ions using fluorescent carbon dots

Abstract: Classical methods for the detection of heavy metal ions in water are tedious and time consuming.

Cited by 123 publications

References 56 publications

Dual Colorimetric Sensor for Hg2+/Pb2+ and an Efficient Catalyst Based on Silver Nanoparticles Mediating by the Root Extract of Bistorta amplexicaulis

Dual Colorimetric Sensor for Hg2+/Pb2+ and an Efficient Catalyst Based on Silver Nanoparticles Mediating by the Root Extract of Bistorta amplexicaulis

A coumarin-containing Schiff base fluorescent probe with AIE effect for the copper(ii) ion

Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals

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