Mechanochemical synthesis of lead sulfide (PbS) nanocrystals from lead oxide

Meng, W. J.; Yuan, Weijie; Wu, Zebing; Wang, Xiaoyan; Xu, Weitong; Wang, Lincai; Zhang, Qiwu; Zhang, Chenglong; Wang, Jingwei; Song, Qingbin

doi:10.1016/j.powtec.2019.02.035

Cited by 31 publications

(10 citation statements)

References 37 publications

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“…“ D ” is the average crystallite size, “λ” is the wavelength, and “β and θ” are the full width at half-maximum (FWHM) and angle of the diffraction peak. 30 Estimated average sizes were 37.88 nm for PtS 2 - 120 , 48.76 nm for PtS 2 - 180 , and 26.64 nm for PtS 2 - 240 along the 100 plane, which are relatively close to the sizes obtained from transmission electron microscopy (TEM) imaging.…”

Section: Resultssupporting

confidence: 62%

Morphological Studies, Photocatalytic Activity, and Electrochemistry of Platinum Disulfide Nanoparticles from Bis(morpholinyl-4-carbodithioato)-platinum(II)

2020

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Bis(morpholinyl-4-carbodithioato)-platinum(II) was synthesized and characterized using spectroscopic techniques and single-crystal X-ray crystallography. The Pt(II) complex crystallized in a monoclinic space group P 2 1 / n with a Pt(II) ion located on an inversion center coordinated two morpholinyl dithiocarbamate ligands that are coplanar to form a slightly distorted square planar geometry around the Pt(II) ion. The complex was thermolyzed at 120, 180, and 240 °C to prepare PtS 2 nanoparticles. Powder X-ray diffraction patterns confirmed the hexagonal crystalline phase for the as-prepared PtS 2 nanoparticles irrespective of thermolysis temperature. Bead-like shaped PtS 2 - 120 nanoparticles with a particle size in the range of 12.46–64.97 nm were formed at 120 °C, while PtS 2 - 180 prepared at 180 °C is quasi-spherical in shape with particles in the range of 24.30–46.87 nm. The PtS 2 - 240 obtained at 240 °C is spherical with particles in the range of 11.45–46.85 nm. The broad emission maxima of the as-prepared PtS 2 nanoparticles are ascribed to the particles’ broad size distributions. The photocatalytic degradation of methylene blue by the PtS 2 nanoparticles shows a maximum efficiency of 87% for PtS 2 - 240 after 360 min. The effects of photocatalytic dosage, irradiation time, pH medium, and scavengers were also evaluated. Cyclic voltammetry of the PtS 2 nanoparticles showed a reversible redox reaction, while the electrochemistry of the as-prepared PtS 2 indicates that the electron transfer process is diffusion-controlled.

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Section: Resultssupporting

confidence: 62%

Morphological Studies, Photocatalytic Activity, and Electrochemistry of Platinum Disulfide Nanoparticles from Bis(morpholinyl-4-carbodithioato)-platinum(II)

2020

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“…The corresponding SAED pattern shows a set of discontinuous spots, forming concentric rings (Fig. 2 H) that indicate a random orientation of the PbS nanocrystals 15 , 19 . The seven rings can be ascribed to Miller indices of the cubic PbS phase (111), (200), (220), (311), (400), (331), and (420) (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Currently, successful synthesis of PbS nanoparticles has utilized three different strategies: physical, chemical or biological approaches 4 , 11 , 12 . Generally, metallic Pb 13 , PbO 14 , 15 , PbNO 3 5 and (CH 3 COO) 2 Pb 16 can act as the lead sources to synthesize PbS nanoparticles, while the sulfur sources can be provided by H 2 S 13 , Na 2 S 15 , Na 2 S 2 O 3 16 , cysteine 17 , thiourea 5 and (TMS) 2 S 14 . The physical and chemical approaches towards PbS nanoparticle production are superior in production rate and capacity 16 , 18 , 19 .…”

Section: Introductionmentioning

confidence: 99%

Bacterial synthesis of PbS nanocrystallites in one-step with l-cysteine serving as both sulfur source and capping ligand

Wei

Guo

Wang

et al. 2021

Sci Rep

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The green bacterial biosynthesis of lead sulfide nanocrystallites by l-cysteine-desulfurizing bacterium Lysinibacillus sphaericus SH72 was demonstrated in this work. Nanocrystals formed by this bacterial method were characterized using the mineralogical and morphological approaches. The results revealed that the microbially synthesized PbS nanocrystals assume a cubic structure, and are often aggregated as spheroids of about 105 nm in size. These spheroids are composed of numerous nanoparticles with diameter 5–10 nm. Surface characterization of the bacterial nanoparticles with FTIR spectroscopy shows that the l-cysteine coats the surface of PbS nanoparticle as a stabilizing ligand. The optical features of the PbS nanocrystallites were assessed by UV–Vis spectroscopy and PL spectroscopy. The maximum absorption wavelength of the bacterial PbS particles occurs at 240 nm, and the photoluminescence emission band ranges from 375 to 550 nm. The band gap energy is calculated to be 4.36 eV, compared to 0.41 eV for the naturally occurring bulk PbS, with this clear blue shift attributable to the quantum size effect.

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“…Lead can also used as water repellant which also prevents mildew and Pb 2+ ion as selective sensors [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Enhanced linear and non-linear optical activity of lead onto l-threonine cadmium acetate crystal

Queen¹,

Bright²,

Delphine³

et al. 2021

J Mater Sci: Mater Electron

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Herein, we describe the growth and characterization of new crystal lead doped L-Threonine cadmium acetate (LTCA). The supramolecular coordination compounds are crystallized by slow evaporation technique at ambient temperature. The X-ray diffraction techniques con rm monoclinic crystal system and the presence of lead onto the LTCA lattice. L-Threonine amino acids have the unique properties like zwitter ionic nature and molecular chirality, which improves the optical properties of the crystal. The linear optical parameters such as optical band gap and refractive indexes are estimated from Uv-Vis analysis.The variation of dielectric constant, dielectric loss with frequency is studied using LCR meter. Due to the electropositive character of lead the static permittivity increases. Magnetic behavior changes to paramagnetic nature due to the inclusion of lead. TG/DTA analysis suggests, the crystal is thermally stable up to 135.32°C. Using Nd-YAG laser the NLO property was studied and the crystal shows higher SHG e ciency than the LTCA crystal.

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Mechanochemical synthesis of lead sulfide (PbS) nanocrystals from lead oxide

Cited by 31 publications

References 37 publications

Morphological Studies, Photocatalytic Activity, and Electrochemistry of Platinum Disulfide Nanoparticles from Bis(morpholinyl-4-carbodithioato)-platinum(II)

Morphological Studies, Photocatalytic Activity, and Electrochemistry of Platinum Disulfide Nanoparticles from Bis(morpholinyl-4-carbodithioato)-platinum(II)

Bacterial synthesis of PbS nanocrystallites in one-step with l-cysteine serving as both sulfur source and capping ligand

Enhanced linear and non-linear optical activity of lead onto l-threonine cadmium acetate crystal

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