Synthesis and Optical Properties of Novel Nickel Disulfide Dendritic Nanostructures

Luo, Rui; Sun, Xia; Yan, Lifeng; Chen, Wen-Ming

doi:10.1246/cl.2004.830

Cited by 14 publications

(5 citation statements)

References 19 publications

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“…3 Having long-term stability and abundant presence in earth, metal dichalcogenides with structure MX 2 (where M = Fe, Mo, Co, Ni, and X = Se, S) are interesting materials to examine as well. Among these NiS 2 has good electronic, 9 magnetic, 10 and optical 11 properties. NiS 2 nanostructures have also applications in supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

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Determination of density of states, conduction mechanisms and dielectric properties of nickel disulfide nanoparticles

Jamil

Batool²,

Sher

et al. 2016

AIP Advances

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Temperature and frequency dependent ac electrical measurements were used to explore density of states, conduction mechanisms and dielectric properties of nickel disulfide (NiS2) nanoparticles. The NiS2 nanoparticles were prepared by conventional one step solid state reaction method at 250 °C. X-ray diffraction (XRD) confirmed cubic phase of prepared nanoparticles. Scanning electron microscope (SEM) images revealed presence of irregular shaped nanoparticles as small as 50 nm. The ac electrical measurements were carried out from 300 K to 413 K. Two depressed semicircular arcs from 20 Hz to 2 MHz showed presence of bulk and grain boundary phases in NiS2 nanoparticles at all temperatures. Small polaron hopping conduction from 300 K to 393 K and correlated barrier hopping conduction mechanism at temperatures higher than 393 K was observed. High value of density of states (of the order of 1024 eV−1cm−3) was calculated from ac conductivity. At low frequencies high values (of the order of 104-107) of real part of dielectric constant (ε′) were observed at different temperatures. These observations suggest that NiS2 nanoparticles may find applications in electronic devices.

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Section: Introductionmentioning

confidence: 99%

“…11 A solvothermal method has also been used to prepare NiS 2 dodecahedrons and microspheres 15 and cubic shaped NiS 2 . 16 Wang et al reported the hydrothermal synthesis of NiS 2 microspheres.…”

Section: Introductionmentioning

confidence: 99%

Determination of density of states, conduction mechanisms and dielectric properties of nickel disulfide nanoparticles

Jamil

Batool²,

Sher

et al. 2016

AIP Advances

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“…Here in we synthesized pyrrole based nickel dithiocarbamate complexes, which are designed to coordinate anions via their pyrrole NH groups, precluding direct metal in coordination to the deprotonated pyrrole nitrogen atom. [9][10][11][12][13] Nickel sulfides posses electronic, 14 electrical magnetic 15 and optical properties 16 and can be used in various fields such as cathode materials in rechargeable lithium batteries, 17 catalysts for hydride nitrogen and hydro desulfurization 18,19 and IR detectors. [6][7][8] Nickel sulfides can form various compositions such as NiS, Ni 3+x S 2 , Ni 3 S 2 , Ni 7 S 6 , Ni 9 S 8 , Ni 3 S 4 , NiS 2 .…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8] Nickel sulfides can form various compositions such as NiS, Ni 3+x S 2 , Ni 3 S 2 , Ni 7 S 6 , Ni 9 S 8 , Ni 3 S 4 , NiS 2 . [9][10][11][12][13] Nickel sulfides posses electronic, 14 electrical magnetic 15 and optical properties 16 and can be used in various fields such as cathode materials in rechargeable lithium batteries, 17 catalysts for hydride nitrogen and hydro desulfurization 18,19 and IR detectors. 20 Nickel dithiocarbamate complexes have been used as single source precursors for synthesis of nickel sulfide nanoparticles and are often influenced by the precursor.…”

Section: Introductionmentioning

confidence: 99%

Nickel(ii) dithiocarbamate complexes containing the pyrrole moiety for sensing anions and synthesis of nickel sulfide and nickel oxide nanoparticles

2015

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6) have been prepared and characterized by elemental analysis, IR, 1 H, 13 C NMR, HSQC, HMBC and UV-Vis absorption spectra. For the heteroleptic complexes, the thiocyanide n C-N values were shifted to higher wavenumbers and NCS 2 carbon signals were shifted downfield compared to that of homoleptic complexes, suggesting the increased strength of the thioureide bond due to the presence of p-accepting phosphine. Electronic spectral studies suggest square-planar geometry for the complexes. Complex 5 was also characterized by X-ray diffraction techniques and presents a distorted NiS 2 PN square planar configuration around the Ni atom. Rare C-HÁ Á ÁNi intramolecular short contact interactions were observed in the complex 5.The ability of representative complexes 1 and 2 to sense anions (F À , Cl À , Br À and I À ) was examined by UV-Vis absorption spectra and cyclic voltametric titration studies. These studies show that both the complexes prefer to bind with I À . Complex 2 has been used as a single source precursor for the preparation of nickel sulfide and nickel oxide nanoparticles. The as-prepared nickel sulfide and nickel oxide nanoparticles have been characterized by PXRD, SEM, EDAX, TEM, HRTEM, UV-Vis and Photoluminescence spectroscopy. X-ray diffraction analysis showed the presence of three phases (cubic-NiS 2 , cubic-Ni 3 S 4 and rhombohedral-Ni 3 S 2 ). TEM images of nickel oxide revealed that the particles are spherical in shape with diameter B30 nm.

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“…8) In this context, 3d transition metal disulfides have drawn considerable attention because of their technological importance in catalysis, lubrications, battery fabrication, cathode materials for high energy density batteries, and other applications. 9,10) Bi 2 Se 3 has a smaller band gap (0.3 eV) 11) than TiO 2 (3.2eV), thereby making it possible to use Bi 2 Se 3 as a photosensitizer for TiO 2 by injecting the conduction band electrons from Bi 2 Se 3 to TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Sonophotocatalytic Performance of Bi₂Se₃-Graphene/TiO₂Hybrid Nanomaterials Synthesized with a Microwave-assisted Method

Zhu¹,

Jo²,

Ye³

et al. 2014

Journal of the Korean Ceramic Society

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This paper introduces a microwave-assisted synthesis method to prepare hybrid Bi 2 Se 3-GR/TiO 2 nanocomposites, which exhibit superior properties over single component materials. The as-prepared composites were characterized by XRD, UV-vis absorbance spectra, SEM,TEM, EDX, and BET analyses, revealing uniform covering of the graphene nanosheet with Bi 2 Se 3 and TiO 2 nanocrystals. For visible light photocatalysis of Rh.B, a significant enhancement in the reaction rate was consequently observed with Bi 2 Se 3-GR/TiO 2 composites. The degradation rate(k app) obtained for sonophotocatalysis was 6.8× 10-3 min-1 , roughly 2.2 times better than that of VL photocatalysis under higher concentrations of Rh.B. The sonophotocatalysis was faster due to greater formation of reactive radicals as well as an increase of the active surface area of the Bi 2 Se 3-GR/TiO 2 composites. The high activity is attributed to the synergetic effects of high charge mobility and red shift of the absorption edge of Bi 2 Se 3-GR/TiO 2 .

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Synthesis and Optical Properties of Novel Nickel Disulfide Dendritic Nanostructures

Abstract: Dendritic NiS2 nanostructures are successfully synthesized for the first time via the reaction between NiCl2·6H2O and CS2 in poly(MMA-co-EA) gel using γ irradiation.

Cited by 14 publications

References 19 publications

Determination of density of states, conduction mechanisms and dielectric properties of nickel disulfide nanoparticles

Determination of density of states, conduction mechanisms and dielectric properties of nickel disulfide nanoparticles

Nickel(ii) dithiocarbamate complexes containing the pyrrole moiety for sensing anions and synthesis of nickel sulfide and nickel oxide nanoparticles

Sonophotocatalytic Performance of Bi₂Se₃-Graphene/TiO₂Hybrid Nanomaterials Synthesized with a Microwave-assisted Method

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Synthesis and Optical Properties of Novel Nickel Disulfide Dendritic Nanostructures

Abstract: Dendritic NiS2 nanostructures are successfully synthesized for the first time via the reaction between NiCl2·6H2O and CS2 in poly(MMA-co-EA) gel using γ irradiation.

Cited by 14 publications

References 19 publications

Determination of density of states, conduction mechanisms and dielectric properties of nickel disulfide nanoparticles

Determination of density of states, conduction mechanisms and dielectric properties of nickel disulfide nanoparticles

Nickel(ii) dithiocarbamate complexes containing the pyrrole moiety for sensing anions and synthesis of nickel sulfide and nickel oxide nanoparticles

Sonophotocatalytic Performance of Bi2Se3-Graphene/TiO2Hybrid Nanomaterials Synthesized with a Microwave-assisted Method

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Sonophotocatalytic Performance of Bi₂Se₃-Graphene/TiO₂Hybrid Nanomaterials Synthesized with a Microwave-assisted Method