Size-controlled synthesis of monodisperse Ag2S nanoparticles by a solventless thermolytic method

Zhang, Chunli; Zhang, Shengmao; Yu, Laigui; Zhang, Zhijun; Zhang, Pingyu; Wu, Zhishen

doi:10.1016/j.matlet.2012.06.112

Cited by 30 publications

(11 citation statements)

References 14 publications

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“…For melt synthesis, the ligands left behind after decomposition of the precursor can in turn be used to stabilize/control the growth of the synthesized nanoparticles 45 . Long chain xanthates have been shown to provide better capping than short chain xanthates 42 . Particles synthesized from complex (2) are thus expected to be more stable than those synthesized from complex (1).…”

Section: Resultsmentioning

confidence: 99%

“…Employing nickel xanthate precursors in the solution based synthesis of nickel sulfide nanoparticles and/or thin films has also resulted in impure phases of nickel sulfide amongst other pure phases 40,41 . Similarly, the use of long chain organic surfactants is known to provide better control over the size and morphology of the synthesized materials 42 . However, the presence of a significant amount of ligand/carbonaceous residue on the surface of the materials originating from the ligands has been shown to diminish materials' end application 43,44 .…”

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confidence: 99%

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Direct solvent free synthesis of bare α-NiS, β-NiS and α-β-NiS composite as excellent electrocatalysts: Effect of self-capping on supercapacitance and overall water splitting activity

Shombe

Khan

Zequine

et al. 2020

Sci Rep

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Nickel sulfide is regarded as a material with tremendous potential for energy storage and conversion applications. However, it exists in a variety of stable compositions and obtaining a pure phase is a challenge. this study demonstrates a potentially scalable, solvent free and phase selective synthesis of uncapped α-niS, β-niS and α-β-niS composites using nickel alkyl (ethyl, octyl) xanthate precursors. Phase transformation and morphology were observed by powder-X-ray diffraction (p-XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The comparative efficiency of the synthesized samples was investigated for energy storage and generation applications, in which superior performance was observed for the niS synthesized from the short chain xanthate complex. A high specific capacitance of 1,940 F/g, 2,150 F/g and 2,250 F/g was observed at 2 mV/s for bare α-niS, β-niS and α-β-NiS composite respectively. At high current density of 1 A/g, α-niS showed the highest capacitance of 1,287 F/g, with 100% of Coulombic efficiency and 79% of capacitance retention. In the case of the oxygen evolution reaction (oeR), β-NiS showed an overpotential of 139 mV at a current density of 10 mA/cm 2 , with a Tafel slope of only 32 mV/dec, showing a fast and efficient process. It was observed that the increase in carbon chain of the synthesized self-capped nickel sulfide nanoparticles decreased the overall efficiency, both for energy storage and energy generation applications. As a step towards the implementation of sustainable energy development strategies, research on the design of high-performance energy storage and conversion systems is gathering renewed momentum 1-3. Sodium ion batteries (SIBs), lithium-ion batteries (LIBs), and supercapacitors (SCs) are examples of the most studied energy storage devices 4,5. Energy conversion systems on the other hand, constitute a series of electrochemical reactions occurring in an electrolytic cell or in a hydrogen-oxygen fuel cell 3. Hydrogen is a clean and sustainable energy carrier, currently regarded as the best alternative fuel of the future 6,7. Its generation via the electrocatalytic splitting of water is a commonly investigated energy conversion technology 8. The performance of both energy storage devices and energy conversion systems is largely influenced by the type of electroactive material employed. Generally, for energy conversion systems the goal is to develop low cost, earth-abundant and efficient electrocatalysts that will replace Pt-, Ir-and Ru-based compounds 9 , while for energy storage devices, the goal is to develop advanced electrode materials that can deliver high energy and power densities 10. Carbon-based materials 11 , conductive polymers 12 , transition metal oxides 13 , nitrides 14 , carbides 14 , phosphides 15 , and sulfides 5 are among the materials investigated for both energy storage and generation applications. Owing to their low cost, high electrochemical activity as well as mechanical and thermal stability, transition

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Direct solvent free synthesis of bare α-NiS, β-NiS and α-β-NiS composite as excellent electrocatalysts: Effect of self-capping on supercapacitance and overall water splitting activity

Shombe

Khan

Zequine

et al. 2020

Sci Rep

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“…The properties of nanoparticle usually lie on the atom on surface, because the atomic bonds on the surface are unsaturated, and the chemical environment and electron cloud density of the surface atom is quite different from the atoms inside. The proportion and the type of atomic bonds of atom on the surface are decided not only by the size but also by the morphology of nanoparticles [33][34][35][36]. For example, Ag nanoparticle has a high catalytic activity, good electrical properties, and photocatalytic bactericidal activity, while flaky triangular Ag nanoparticles have great potential in biosensing and biomedical field.…”

Section: The Effect Of Morphology Ni Nanolubricant On Its Tribologicamentioning

confidence: 99%

“…In recent years, Cu nanoparticles as metal nanoadditives shows good antiwear and dynamic self-repairing performance [2-5, 7-10, [33][34][35][36]. For example, in this group, two alkyl two phosphorothioate (DDP) surface-modified Cu nanoparticles with average diameter of 5 nm was produced through in situ surface modification and liquid phase chemical reduction technology.…”

Section: Tribological Properties Of Cu@ni Nanolubricantsmentioning

confidence: 99%

Preparation of Nickel-Based Nanolubricants and Investigation of their Tribological Behavior

Zhang¹,

Zhang²,

Zhang³

et al. 2016

Advances in Tribology

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In situ surface-modification technique is adopted in present research to fabricate a series of Ni nanoparticles as well as Cu@Ni nanoparticles with different size and morphology. The correlation among the composition, structure, size, and morphology and tribological properties of as-synthesized additives were explored, and the frictionreducing, antiwear, and worn surface self-healing mechanisms of the additives were discussed. It was found that Ni nanoparticles with a smaller size show higher surface activity and can readily deposit on the sliding surface and form a stable and continuous protective layer thereon. Compared with sphere-like and triangular rodlike Ni nanoparticles, triangular plate-like Ni nanoparticles are more liable to form protective layer. Compared to Ni-based nanolubricants, as-synthesized Cu@Ni nanolubricants exhibit better friction-reducing, antiwear, and extreme pressure properties. It is because the highly active Ni nanocores and O-and N-containing organic modifying agents can readily form boundary lubricating film on sliding steel surfaces, while Cu nanocores can easily deposit on sliding steel surface to form a protective layer (self-healing film) thereon. Ni nanoparticles as nanoadditives in solidliquid lubricating system significantly reduce the friction in all lubrication regimes: As a nanolubricant, Ni nanoparticles exhibit popular and effective friction-reducing, antiwear, and extreme pressure properties.

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“…The method is both economic and non-toxic. Monodispersed and size-controlled Ag 2 S nanoparticles were synthesized successfully via a green and simple surfactant-free solventless thermolysis of silver xanthates as single-source precursors [ 60 ]. In the experiment, the diameter of Ag 2 S nanoparticles is from 8.9 ± 1.2 nm to 48.3 ± 3.6 nm (Fig.…”

Section: Reviewmentioning

confidence: 99%

Synthesis and Functions of Ag2S Nanostructures

Cui¹,

Li²,

Liu³

et al. 2015

Nanoscale Res Lett

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The paper presents a review about synthesis and applications of Ag2S nanostructures. As the modern photoelectric and biological materials, Ag2S nanomaterials are potentially useful for both structure and function purposes. Ag2S is a direction narrow band gap semiconductor with special properties. Ag2S nanostructures have been widely researched in chemistry and biochemistry fields because of their unusual optical, electrical, and mechanical properties. It can also be used in many fields, such as photovoltaic cells and infrared detector. In the past few years, Ag2S nanostructures have been synthesized by various methods. The article mainly discusses the four types of preparation methods. Moreover, this article shows a detailed review on the new properties, fabrication, and applications of Ag2S nanocrystals.

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Size-controlled synthesis of monodisperse Ag2S nanoparticles by a solventless thermolytic method

Cited by 30 publications

References 14 publications

Direct solvent free synthesis of bare α-NiS, β-NiS and α-β-NiS composite as excellent electrocatalysts: Effect of self-capping on supercapacitance and overall water splitting activity

Direct solvent free synthesis of bare α-NiS, β-NiS and α-β-NiS composite as excellent electrocatalysts: Effect of self-capping on supercapacitance and overall water splitting activity

Preparation of Nickel-Based Nanolubricants and Investigation of their Tribological Behavior

Synthesis and Functions of Ag2S Nanostructures

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