Hydrothermal synthesis of NiS nanobelts and NiS2 microspheres constructed of cuboids architectures

Wang, Lili; Zhu, Yongchun; Li, Haibo; Li, Qianwen; Qian, Yitai

doi:10.1016/j.jssc.2009.10.021

Cited by 59 publications

(31 citation statements)

References 29 publications

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“…1,2 Nickel sulfide has attracted considerable attention because of its unique optical, magnetic, electrical and catalytic properties. 3,4 Nickel sulfide can be prepared by different methods, such as vapor phase reaction, 5 hydrothermal, 6 ultrasonic irradiation 7 and solvothermal. 8 A variety of compositions including NiS, NiS 2 , Ni 3+x S 2 , Ni 4 S 3+x , Ni 6 S 5 , Ni 9 S 8 , Ni 7 S 6 , Ni 3 S 4 and Ni 3 S 2 can be obtained by varying synthesis process.…”

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%

“…16 Wang et al reported the hydrothermal synthesis of NiS 2 microspheres. 6 An et al 14 prepared NiS 2 using solid state reaction method.…”

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

View full text Add to dashboard Cite

show abstract

“…[14] In addition, nickel sulfides can form various phases, [15] such as NiS, Ni 3 + x S 2 , Ni 3 S 2 , Ni 7 S 6 , Ni 3 S 4 , and NiS 2 , and have multiple applications, including as photocatalysts for H 2 evolution, [16] possible transformation toughener, [17] cathode materials for rechargeable lithium batteries, [18] or as a highboiling solvent for all-solid-state lithium secondary batteries. [19] Furthermore, Du's group introduced the application of iron/ nickel sulfide filled carbon nanotubes and their microwave-absorbing properties, [20] with a maximum reflection loss of À29.58 dB.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Growth Mechanism of White‐Fungus‐Like Nickel Sulfide Microspheres, and Their Application in Polymer Composites with Enhanced Microwave‐Absorption Properties

Lü

Wang

et al. 2014

ChemPlusChem

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White‐fungus‐like NiSx microspheres have been synthesized on a large scale by using a simple hydrothermal method. The influence of the reaction time and the surfactant on the final products was investigated, and the formation mechanism was discussed. The synthesized white‐fungus‐like NiSx microspheres were used firstly as fillers in the fabrication of NiSx/polyvinylidene fluoride (PVDF) composites. Relationships between the loadings of the NiSx and wave‐absorption properties of the composites were analyzed. The loss mechanisms of NiSx/PVDF with different loadings were also discussed according to their dielectric and magnetic behaviors.

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“…Different morphologies of NiS can be prepared by various methods: Shen et al [12] reported phase-controlled synthesis of nickel sulphide nanorods; Wang et al [13] synthesized NiS nanotubes using selfassembly route in AAO templates; Chen et al [14] prepared NiS nanotubes and nanoneedles derived from rolled nanosheets from microemulsion; and Huang et al [15] reported NiS with a core-shell structure. NiS can be synthesized using solvothermal method [16] and hydrothermal process [17]. Iron sulphide (FeS) has importance in the function of electron-transfer groups in biological applications such as enzyme catalysis, protein folding and metabolic regulation, photosynthesis and respiratory chain.…”

Section: Introductionmentioning

confidence: 99%

Quantum chemical studies on the structural and electronic properties of nickel sulphide and iron sulphide nanoclusters

et al. 2014

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Nanoclusters of nickel sulphide (NiS) n and iron sulphide (FeS) n for n = 3-5 are studied using B3LYP exchange correlation function with 6-31G as a basis set. The structural stability of different isomers of NiS and FeS is analysed with the optimized energy, binding energy and vibrational studies. The electronic properties of isomers are discussed in terms of HOMO-LUMO gap, ionization potential, electron affinity, and embedding energy of different clusters. Based on the calculated energy, planar ring, linear ladder and bipyramidal cube of NiS and FeS nanoclusters are found to be more stable. The increase in number of atoms in the clusters leads to increase in its stability. The dipole moment is high for planar rhombus and linear ladder structures of NiS and FeS nanoclusters. The ionization potential and electron affinity are high for planar ring structure of NiS and FeS clusters. The value of energy gap of linear ladder NiS nanocluster and cube and bipyramidal cube structures of FeS is found to be low. The binding energy for cube structure of NiS and FeS clusters is found to be high. Hexagonal ring structure of NiS and FeS clusters has low embedding energy value. The other parameters such as dipole moment and point symmetry are also discussed. The structural stability and electronic properties will provide an insight for experimentalist to tailor new materials that have potential importance in engineering applications.

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Hydrothermal synthesis of NiS nanobelts and NiS2 microspheres constructed of cuboids architectures

Cited by 59 publications

References 29 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

Synthesis and Growth Mechanism of White‐Fungus‐Like Nickel Sulfide Microspheres, and Their Application in Polymer Composites with Enhanced Microwave‐Absorption Properties

Quantum chemical studies on the structural and electronic properties of nickel sulphide and iron sulphide nanoclusters

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