Dynamics of the nanocrystal structure and composition in growth solutions monitored by<i>in situ</i>lab-scale X-ray diffraction

Fridman, Helena; Volokh, Michael; Mokari, Taleb

doi:10.1039/d1nr05371j

Cited by 3 publications

(4 citation statements)

References 65 publications

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“…To investigate this effect, we prepared small Sb 0 nanospheres (NS; with diameters ca. 15 nm, Figure S7b) and monitored the alloy formation process with in situ XRD, by mixing Sb 0 NSs with Ni(Ac) 2 in TOP using a procedure recently published by our group . After the reactants are mixed, the mixture is heated under a He(g) atmosphere inside a diffractometer oven chamber.…”

Section: Results and Discussionmentioning

confidence: 99%

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Unconventional Synthesis of Metal (Ni, Co, Ag) Antimony Alloy Particles

Shreteh,

Murugesan,

Alkrenawi

et al. 2023

Inorg. Chem.

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Bimetallic alloy materials attract interest owing to their properties and stability compared to pure metals, especially alloys with nanoscale dimensions. Metal antimony (MSb) alloys, specifically NiSb, are widely used for charge storage applications due to their high stability. Most synthetic approaches to form these materials require drastic conditions (e.g., high temperatures, potent reducing agents, and extended reaction times), limiting control over the final morphology. The other viable approach is a galvanic replacement that uses unstable materials as precursors. In this work, we present a new and facile method to prepare several MSb (M = Ni, Co, Ag) alloys with shape control by reacting Sb 2 S 3 particles with a metal(M)-sulfide single source precursor in trioctylphosphine (TOP) under mild conditions. Furthermore, we explore the role of TOP as a reducing agent and demonstrate how both alloy constituents are crucial for mutual stabilization. Electrochemical studies are also performed on these NiSb particles, showing their ambipolar nature and allowing their utilization as the active ingredient in the demonstrated high-energy-density symmetric supercapacitor.

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Section: Results and Discussionmentioning

confidence: 99%

“…The experimental setup follows the procedure published by our group . The reaction mixture was prepared by mixing 150 μL of TOP with 150 mg of Ni(Ac) 2 and 1.0 mL of Sb 0 NS stock solution (after hexane evaporation) for 60 min under N 2 atmosphere.…”

Section: Methodsmentioning

confidence: 99%

Unconventional Synthesis of Metal (Ni, Co, Ag) Antimony Alloy Particles

Shreteh,

Murugesan,

Alkrenawi

et al. 2023

Inorg. Chem.

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“…Lastly, the noninvasive optical methods can be used alongside complementary analytical techniques for additional insight into NC growth, such as in situ X-ray diffraction for the evolution of crystal phases and multimetallic compositions. 61 This journal is © The Royal Society of Chemistry 2022…”

Section: Framework To Characterize Supersaturation During Nc Growthmentioning

confidence: 99%

Theoretical framework and experimental methodology to elucidate the supersaturation dynamics of nanocrystal growth

Chen

Clasky

2022

Nanoscale Horiz.

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“…This method was proven useful for monitoring the dynamic structural changes of nanocrystals. 31 In this work, we have used an ensemble of in situ temperature-resolved techniques, including XRD, simultaneous thermal analysis [thermogravimetry (TGA) and differential scanning calorimetry (DSC)], and thermo-gravimetric infrared spectroscopy (TG-IR) to study the thermal behaviour of polyvinylpyrrolidone (PVP) capped π-SnS nanoparticles.…”

Section: Introductionmentioning

confidence: 99%