A single source-precursor route for the one-pot synthesis of highly luminescent CdS quantum dots as ultra-sensitive and selective photoluminescence sensor for Co<sup>2+</sup>and Ni<sup>2+</sup>ions

Mahapatra, Niharendu; Panja, Sudipta; Mandal, Abhijit; Halder, Mintu

doi:10.1039/c4tc00887a

Cited by 62 publications

(38 citation statements)

References 71 publications

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“…For instance, Chen et al [189] utilized thioglycerol-capped CdS QDs as an ion-selective probe to determine copper, zinc, and ferric ions in buffer solutions. Due to the effect on photoluminescence (PL) behaviors of QDs by metals ions, QDs have also been utilized as fluorescent probes for many metal ions, including K + [188], Ag + [190], Cd 2+ [191,192], Cu 2+ [193-200], Fe 2+ , Hg 2+ [187,201-207], Pb 2+ [208], Cr 3+ [209,210], Fe 3+ [211], Sb 3+ [212], Co 2+ [213], Ba 2+ [214], Ca 2+ and Ni 2+ [215]. Based on this principle of direct interaction of metal ions with QDs, the Zhu group [195] reported L-cysteine-capped NIR-emitting CdSeTe QDs for selective detection of Cu 2+ , with a LOD of 7.1 nM.…”

Section: Semiconductor Nanoparticle-based Fluorescent Nanoprobes Fmentioning

confidence: 99%

Fluorescent nanoprobes for sensing and imaging of metal ions: Recent advances and future perspectives

et al. 2016

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Summary Recent advances in nanoscale science and technology have generated nanomaterials with unique optical properties. Over the past decade, numerous fluorescent nanoprobes have been developed for highly sensitive and selective sensing and imaging of metal ions, both in vitro and in vivo. In this review, we provide an overview of the recent development of the design and optical properties of the different classes of fluorescent nanoprobes based on noble metal nanomaterials, upconversion nanoparticles, semiconductor quantum dots, and carbon-based nanomaterials. We further detail their application in the detection and quantification of metal ions for environmental monitoring, food safety, medical diagnostics, as well as their use in biomedical imaging in living cells and animals.

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Section: Semiconductor Nanoparticle-based Fluorescent Nanoprobes Fmentioning

confidence: 99%

Fluorescent nanoprobes for sensing and imaging of metal ions: Recent advances and future perspectives

et al. 2016

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“…The main distinguishing feature of the proposed sensor from the luminescent sensors previously reported, e.g., [ 50 , 51 ] is the presence of magnetic properties; therefore, in this work, we also demonstrate the ability to concentrate and remove the sensor from the analyzed system together with ions of the analyzed metals for their precise identification, for example, by the inductively coupled plasma mass spectrometry. These concentrations of ions, which could cause a statistically significant quenching of sensors PL, are much lower than their maximum allowable concentration in natural water.…”

Section: Discussionmentioning

confidence: 63%

Magneto-Fluorescent Hybrid Sensor CaCO3-Fe3O4-AgInS2/ZnS for the Detection of Heavy Metal Ions in Aqueous Media

et al. 2020

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Heavy metal ions are not subject to biodegradation and could cause the environmental pollution of natural resources and water. Many of the heavy metals are highly toxic and dangerous to human health, even at a minimum amount. This work considered an optical method for detecting heavy metal ions using colloidal luminescent semiconductor quantum dots (QDs). Over the past decade, QDs have been used in the development of sensitive fluorescence sensors for ions of heavy metal. In this work, we combined the fluorescent properties of AgInS2/ZnS ternary QDs and the magnetism of superparamagnetic Fe3O4 nanoparticles embedded in a matrix of porous calcium carbonate microspheres for the detection of toxic ions of heavy metal: Co2+, Ni2+, and Pb2+. We demonstrate a relationship between the level of quenching of the photoluminescence of sensors under exposure to the heavy metal ions and the concentration of these ions, allowing their detection in aqueous solutions at concentrations of Co2+, Ni2+, and Pb2+ as low as ≈0.01 ppm, ≈0.1 ppm, and ≈0.01 ppm, respectively. It also has importance for application of the ability to concentrate and extract the sensor with analytes from the solution using a magnetic field.

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“…The photoluminescence study of the undoped sample shown in Fig. a shows the emissions of the traps created by stoichiometry‐related defects like the deep electron trap of sulfur vacancies

true({normalV}_{normalS}^{2 -} true)

at 1.65 eV . A second identifiable peak with an energy of 1.75 eV related to the emission after an electron–phonon interaction with the lattice .…”

Section: Resultsmentioning

confidence: 84%

“…The peak located at 2.03 eV has been related in previous works as a donor–acceptor pair (DAP) transition between a donor level related to interstitial cadmium

true({normalI}_{Cd}^{2 +} true)

and an undetermined acceptor level. As reported previously , sulfur vacancies also create shallow electron traps near the conduction band, giving a more energetic defect‐related emission of 2.35 eV of the matrix. The main excitonic recombination (D 0 X) of CdS was found at 2.55 eV.…”

Section: Resultsmentioning

confidence: 99%

Stimulation of the photoluminescent properties of CBD‐CdS thin films achieved by structural modifications resulting from Ag⁺ doping

Flores-Pacheco

Contreras-Rascón

Dı́az-Reyes

et al. 2017

Physica Rapid Research Ltrs

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The present study details the changes in photoluminescence properties stimulated by the structural changes in consequence of doping the II–VI nanocomposite thin‐film semiconductor cadmium sulfide (CdS) with the IB metallic ion Ag+. The synthesis of the matrix and doped semiconductors was performed using low‐temperature chemical bath deposition (CBD). The doping percentage of the CdS matrix was determined by energy‐dispersive X‐ray spectroscopy (EDS) with a value around 3%. The crystallographic study shows a cubic (1 1 1) preferential growth plane for the undoped material. Both X‐ray and HRTEM characterizations show the presence of a polycrystalline structure for the Ag+‐doped sample. Measurements of particle size from HRTEM micrographs confirm quantum confinement with a reduction of the average particle size from 5.46 to 4.12 nm in the doped sample. The photoluminescence study shows intense downshifted emissions in the green range of the visible spectrum. This could be due to the shallow electron traps formed by crystalline defects in the lattice, which are induced by the metallic ion. This study also shows higher‐energy emissions due to the decrease of the particle size below the effective CdS exciton Bohr radius.

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A single source-precursor route for the one-pot synthesis of highly luminescent CdS quantum dots as ultra-sensitive and selective photoluminescence sensor for Co²⁺and Ni²⁺ions

Cited by 62 publications

References 71 publications

Fluorescent nanoprobes for sensing and imaging of metal ions: Recent advances and future perspectives

Fluorescent nanoprobes for sensing and imaging of metal ions: Recent advances and future perspectives

Magneto-Fluorescent Hybrid Sensor CaCO3-Fe3O4-AgInS2/ZnS for the Detection of Heavy Metal Ions in Aqueous Media

Stimulation of the photoluminescent properties of CBD‐CdS thin films achieved by structural modifications resulting from Ag⁺ doping

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A single source-precursor route for the one-pot synthesis of highly luminescent CdS quantum dots as ultra-sensitive and selective photoluminescence sensor for Co2+and Ni2+ions

Cited by 62 publications

References 71 publications

Fluorescent nanoprobes for sensing and imaging of metal ions: Recent advances and future perspectives

Fluorescent nanoprobes for sensing and imaging of metal ions: Recent advances and future perspectives

Magneto-Fluorescent Hybrid Sensor CaCO3-Fe3O4-AgInS2/ZnS for the Detection of Heavy Metal Ions in Aqueous Media

Stimulation of the photoluminescent properties of CBD‐CdS thin films achieved by structural modifications resulting from Ag+ doping

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A single source-precursor route for the one-pot synthesis of highly luminescent CdS quantum dots as ultra-sensitive and selective photoluminescence sensor for Co²⁺and Ni²⁺ions

Stimulation of the photoluminescent properties of CBD‐CdS thin films achieved by structural modifications resulting from Ag⁺ doping