Nano-sized HgSe powder: Single-step preparation and characterization

Singh, Narendra Pratap; Patil, K.R.; Khanna, Pawan K.

doi:10.1016/j.mseb.2007.06.009

Cited by 17 publications

(7 citation statements)

References 28 publications

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“…Note that HgSe showed poor crystallization when the reaction was carried out at ambient temperature and atmospheric pressure. After the product was treated with hydrothermal synthetic conditions, good-quality crystals were achieved and characterized by powder X-ray diffraction, the results of which tallied with the reported spectrogram of HgSe [18] (Figure 1b). We next studied the stoichiometric response of FSe-1 to mercury ions by keeping the concentration of FSe-1 the same (2.5 mm) and changing the molar ratio of [Hg -1] from 0.05 to 3.50.…”

Section: Resultssupporting

confidence: 63%

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Use of Selenium to Detect Mercury in Water and Cells: An Enhancement of the Sensitivity and Specificity of a Seleno Fluorescent Probe

Tang

Ding

et al. 2009

Chemistry A European J

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Seleno fluorescent probe: An organoselenium fluorescent probe (FSe-1) for mercury was designed based on the irreversible deselenation mechanism. FSe-1 exhibits an ultrahigh selectivity and sensitivity for Hg(2+) detection only for reactive selenium atom sites, due the strong affinity between Se and Hg. Furthermore, the new probe has been successfully used for imaging mercury ions in RAW 264.7 cells (a mouse macrophage cell line; see figure).Inspired by the antitoxic function of selenium towards heavy-metal ions, we designed an organoselenium fluorescent probe (FSe-1) for mercury. The reaction of FSe-1 and Hg(2+) is an irreversible deselenation mechanism based on the selenophilic character of mercury. FSe-1 exhibits an ultrahigh selectivity and sensitivity for Hg(2+) detection only for reactive selenium atom sites due to the strong affinity between Se and Hg. The experimental results proved that FSe-1 was selective for Hg(2+) ions over other relevant metal ions and bioanalytes, and also showed an enhancement in sensitivity of up to 1.0 nM, which is lower than the current Environmental Protection Agency standard for drinking water. Furthermore, the new probe has been successfully applied to the imaging of mercury ions in RAW 264.7 cells (a mouse macrophage cell line) with high sensitivity and selectivity.

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Section: Resultssupporting

confidence: 63%

“…The resulting precipitate was a brown-black powder that was characterized by powder X-ray diffraction and confirmed to be HgSe by comparison with the literature spectrogram of HgSe. [21] …”

Section: Methodsmentioning

confidence: 99%

Use of Selenium to Detect Mercury in Water and Cells: An Enhancement of the Sensitivity and Specificity of a Seleno Fluorescent Probe

Tang

Ding

et al. 2009

Chemistry A European J

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“…However, the Se 3d peak at 53.2 eV (Figure b) supports the presence of a Hg−Se bond , . The Hg 4f peak at 103.4 eV at pH 7.4 (Figure a) is indicative of a Hg−S bond − , as the high-energy component is known to increase with increasing pH . This is also supported by the S 2p peak.…”

Section: Resultsmentioning

confidence: 75%

“…As shown in Table , the particle size is calculated to be ∼9 nm. HgSe nanoparticles of this size range have been previously produced by reacting Hg(II) with freshly prepared selenide or polyselenides or with organic selenide at high temperature . In the present study, the size quantization is possible due to the presence of excess GSH molecules, which, as shown in Figure , form a covalent bond with the nanoparticle core and thus stabilize the nanoparticles.…”

Section: Resultsmentioning

confidence: 78%

Reversible Dissolution of Glutathione-Mediated HgSe_xS_1−x Nanoparticles and Possible Significance in Hg−Se Antagonism

Khan

Wang

2009

Chem. Res. Toxicol.

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A new pathway is proposed for the in vivo biomineralization of HgSe(x)S(1-x)(s) (0 < x < or = 1), which is thought to be the ultimate metabolic product responsible for the Hg-Se antagonism in biological systems. The pathway involves the reaction of inorganic Hg(II) with selenite in the presence of glutathione (GSH). The resulting GSH-mediated HgSe(x)S(1-x) nanoclusters are reversibly soluble depending on the pH, which might have played a role in the distribution pattern of HgSe(x)S(1-x)(s) in different tissues. The HgSe species involved and the nature of bonding were studied by UV-visible spectroscopy, infrared spectroscopy, microprobe scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy.

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“…According to the X-ray Diffraction (XRD) patterns of MAM (Figure 2a) analysis, the main phases of MAM are HgSe and PbSO 4 . Hg4f X-ray Photoelectron Spectroscopy (XPS) detailed spectrum of MAM is shown in Figure 2b, the binding energy of Hg4f can be divided into two peaks, 100.6 eV (Hg4f7/2) and 104.6 eV (Hg4f5/2), which demonstrated the HgSe phase [30,31]. According to the results of the field emission scanning electron microscope (Figure 2c), the positions of the two elements of mercury and selenium are well matched, which is consistent with the XRD patterns phases and Hg4f XPS detailed spectrum results.…”

Section: Experimental 21 Materialsmentioning

confidence: 99%

Hg/Se/PbSO4 Recovery by Microwave-Intensified HgSe Pyrolysis from Toxic Acid Mud

Zeng

Liu

Hong

et al. 2022

Metals

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The acid mud produced in the nonferrous smelting process is a hazardous waste, which mainly consists of elements Hg, Se, and Pb. Valuable metal (Hg/Se/Pb) can be recovered from acid mud by heat treatment. For safe disposal of the toxic acid mud, a new resource utilization technology by microwave roasting is proposed in this paper. The reaction mechanisms were revealed through thermodynamics and thermogravimetric analysis, which showed that the main reaction was the oxidative pyrolysis of HgSe in the process of roasting. Moreover, the mercury removal effects of acid mud by microwave heating and conventional heating were studied, the recovery rate of mercury by microwave heating for 30 min at 400 °C was 99.5%: far higher than that of conventional heating for 30 min at 500 °C (44.3%). This was due to the high dielectric constant of HgSe, as microwaves can preferentially heat HgSe and reduce the adsorption energy of HgSe on the surface of PbSO4 blocks, thus strengthening the pyrolysis process of HgSe and reducing energy consumption. The preferable prototyping technology for resource utilization of toxic acid mud should be microwave roasting. This study is of great significance for the realization of mercury pollution reduction and for green production of lead-zinc smelting.

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Nano-sized HgSe powder: Single-step preparation and characterization

Cited by 17 publications

References 28 publications

Use of Selenium to Detect Mercury in Water and Cells: An Enhancement of the Sensitivity and Specificity of a Seleno Fluorescent Probe

Use of Selenium to Detect Mercury in Water and Cells: An Enhancement of the Sensitivity and Specificity of a Seleno Fluorescent Probe

Reversible Dissolution of Glutathione-Mediated HgSe_xS_1−x Nanoparticles and Possible Significance in Hg−Se Antagonism

Hg/Se/PbSO4 Recovery by Microwave-Intensified HgSe Pyrolysis from Toxic Acid Mud

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Nano-sized HgSe powder: Single-step preparation and characterization

Cited by 17 publications

References 28 publications

Use of Selenium to Detect Mercury in Water and Cells: An Enhancement of the Sensitivity and Specificity of a Seleno Fluorescent Probe

Use of Selenium to Detect Mercury in Water and Cells: An Enhancement of the Sensitivity and Specificity of a Seleno Fluorescent Probe

Reversible Dissolution of Glutathione-Mediated HgSexS1−x Nanoparticles and Possible Significance in Hg−Se Antagonism

Hg/Se/PbSO4 Recovery by Microwave-Intensified HgSe Pyrolysis from Toxic Acid Mud

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Reversible Dissolution of Glutathione-Mediated HgSe_xS_1−x Nanoparticles and Possible Significance in Hg−Se Antagonism