Formation of NiS and CoS semiconductor nanoparticles inside mordenite-type zeolite

Sadjadi, Mirabdullah Seyed; Pourahmad, Afshin; Sohrabnezhad, Sh.; Zare, Kazem

doi:10.1016/j.matlet.2006.10.067

Cited by 36 publications

(15 citation statements)

References 17 publications

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“…3.44 and 3.35 eV for α-NiS prepared at pH 7 and pH 8 respectively. Also, the calculated band gap energy is lower than that of the reported values (3.53-3.90 eV) [42]. It can also be seen from UV-vis spectra that the intensity of transmission (%) decreases while increasing grain size.…”

Section: Resultscontrasting

confidence: 47%

Polyol synthesis of α-NiS particles and its physico-chemical properties

Surendran

Sankar

Berchmans

et al. 2015

Materials Science in Semiconductor Processing

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Section: Resultscontrasting

confidence: 47%

Polyol synthesis of α-NiS particles and its physico-chemical properties

Surendran

Sankar

Berchmans

et al. 2015

Materials Science in Semiconductor Processing

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“…[22] Cobalt sulfides with different stoichiometric ratios, such as Co 1Àx S, CoS, CoS 2 , Co 9 S 8 , and Co 3 S 4 , are the most important type of metal chalcogenides. These cobalt sulfides have shown great potential for use in LIBs, [18,[23][24][25] semiconductors, [26] magnets, catalysts, [12,13,[27][28][29][30] and photocatalytic degradation. [32] The thermal stability and electrical conductivity of cobalt sulfides are much better than those of other metal sulfides, [23] however, they have a number of major drawbacks, namely Abstract: Cobalt sulfide is a good candidate for both lithium ion batteries (LIBs) and cathodic oxygen reduction reaction (ORR), but low conductivity, poor cyclability, capacity fading, and structural changes hinder its applications.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Co₃S₄/Graphene Composites for Lithium Ion Batteries and Oxygen Reduction Reaction

Mahmood

Zhang

Jiang

et al. 2013

Chemistry A European J

220

181

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Cobalt sulfide is a good candidate for both lithium ion batteries (LIBs) and cathodic oxygen reduction reaction (ORR), but low conductivity, poor cyclability, capacity fading, and structural changes hinder its applications. The incorporation of graphene into Co3S4 makes it a promising electrode by providing better electrochemical coupling, enhanced conductivity, fast mobility of ions and electrons, and a stabilized structure due to its elastic nature. With the objective of achieving high-performance composites, herein we report a facile hydrothermal process for growing Co3S4 nanotubes (NTs) on graphene (G) sheets. Electrochemical impedance spectroscopy (EIS) verified that graphene dramatically increases the conductivity of the composites to almost twice that of pristine Co3S4. Electrochemical measurements indicated that the as-synthesized Co3S4/G composites exhibit good cyclic stability and a high discharge capacity of 720 mA h g(-1) up to 100 cycles with 99.9% coulombic efficiency. Furthermore, the composites react with dissolved oxygen in the ORR by four- and two-electron mechanisms in both acidic and basic media with an onset potential close to that of commercial Pt/C. The stability of the composites is much higher than that of Pt/C, and exhibit high methanol tolerance. Thus, these properties endorse Co3 S4 /G composites as auspicious candidates for both LIBs and ORR.

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“…4). CoS bulk showed an absorption edge at 347 nm, whereas CoS in mordenite showed an absorption edge at 322 nm [12,13]. Comparison of the absorption edge of bulk CoS samples had a blue shift in the onset of absorption observed at 305 nm.…”

Section: Resultsmentioning

confidence: 93%

Chitosan films as a template for biosynthesis of cobalt sulfide nanoparticals and as sensor material for dibutyl phthalate

Wang

Gao

2015

Polym. Sci. Ser. B

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Crystallization of the semiconductor nanoparticle, cobalt sulfide (CoS), embedded in crossed chitosan was performed by biomimetic method. Structural, morphological, and sensing property studies of the materials were carried out by means of Fourier transform infrared spectroscopy, differential scanning cal orimetry, scanning electron microscopy, and fluorescence analysis. A simple, rapid, and specific array for dibutyl phthalate was further established. The nanocomposite film was found to be a potential sensor material for esters.

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Formation of NiS and CoS semiconductor nanoparticles inside mordenite-type zeolite

Cited by 36 publications

References 17 publications

Polyol synthesis of α-NiS particles and its physico-chemical properties

Polyol synthesis of α-NiS particles and its physico-chemical properties

Multifunctional Co₃S₄/Graphene Composites for Lithium Ion Batteries and Oxygen Reduction Reaction

Chitosan films as a template for biosynthesis of cobalt sulfide nanoparticals and as sensor material for dibutyl phthalate

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Formation of NiS and CoS semiconductor nanoparticles inside mordenite-type zeolite

Cited by 36 publications

References 17 publications

Polyol synthesis of α-NiS particles and its physico-chemical properties

Polyol synthesis of α-NiS particles and its physico-chemical properties

Multifunctional Co3S4/Graphene Composites for Lithium Ion Batteries and Oxygen Reduction Reaction

Chitosan films as a template for biosynthesis of cobalt sulfide nanoparticals and as sensor material for dibutyl phthalate

Contact Info

Product

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Multifunctional Co₃S₄/Graphene Composites for Lithium Ion Batteries and Oxygen Reduction Reaction