Evolution of In2S3 Nanoplates with Time

Gqoba, Siziwe; Airo, Mildred; Ntholeng, Nthabiseng; Machogo, Lerato F.E.; Sithole, Rudo K.; Moloto, Makwena J.; Wyk, Juanita L. van; Moloto, Nosipho

doi:10.1016/j.matpr.2015.08.019

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…New efforts have been demonstrated in recent years for the development of In 2 S 3 two-dimensional (2D) nanostructures, for example, thin films or nanoplatelets (NPLs), using either chemical vapor deposition or colloidal chemical procedures. − It is anticipated that these 2D materials should possess a tunable electronic band structure, high conductivity, and efficient optical transitions. , Moreover, the unique defect cubic and defect spinel structures of the In 2 S 3 compound include voids, which can accommodate functional electrical or magnetic dopants, useful attribute for practical applications. Indeed, recent studies used Cu- or Mn-doped β-In 2 S 3 nanostructures in prototype solar cells and light-emitting diodes. − The structure of shape stability was discussed only in a single case, showing transformation of wrinkled nanostructures into nanodisk shapes .…”

Section: Introductionmentioning

confidence: 99%

Unraveling the Growth Mechanism Forming Stable γ-In₂S₃ and β-In₂S₃ Colloidal Nanoplatelets

Horani

Lifshitz

2019

Chem. Mater.

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Inorganic two-dimensional semiconductor nanostructures intrigue the scientific community because of their tunable and sparse electronic states and their high conductivity. The current work deals with colloidal nanoplatelets (NPLs) based on In2S3 compound, focusing on the growth mechanism that leads to the formation of two different phases, trigonal γ-In2S3 and defect spinel β-In2S3, both stabilized at room temperature and characterized by ordered metal voids. In particular, we substantiate the experimental factors (e.g., temperature, reaction duration, and surface ligands) that control the growth progress. The results indicated the formation of hexagonal NPLs of the γ-phase at an elevated temperature and dodecagon NPLs of the γ-phase at a lower temperature. A long-reaction duration time transformed the hexagons/dodecagons into truncated triangular shapes. Furthermore, the analysis of thermodynamic and kinetic factors indicated a phase transformation from the γ-phase to the β-phase. All phases were produced by a new colloidal procedure based on a single precursor. The structures created were verified by X-ray diffraction, high-resolution transmission electron microscopy analyses, and Raman measurements. Elementary optical properties were identified by absorption and emission measurements. The nanoplatelets discussed offer low toxicity and optical activity in the UV and visible spectral regimes and an option for electrical or magnetic doping, enabled by the existing voids.

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Section: Introductionmentioning

confidence: 99%

Unraveling the Growth Mechanism Forming Stable γ-In₂S₃ and β-In₂S₃ Colloidal Nanoplatelets

Horani

Lifshitz

2019

Chem. Mater.

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“…A reasonable amount of research has been conducted and reported on some layered transition metal chalcogenides such as MoS2, InSe, In2S3, CuSe2 [6][7][8] however, very little information is available on the noble metal chalcogenide gold selenide (AuSe), a layered material in the bulk.…”

Section: Introductionmentioning

confidence: 99%

Elucidating the structural properties of gold selenide nanostructures

et al. 2019

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“…Colloidal synthesis of other 2D nanomaterials is relatively simpler. The Moloto group has fabricated several 2D nanomaterials including InSe, In 2 S 3 , AuSe, MoSe 2 and WS 2 among many others using the colloidal method of synthesis [17–21] . This method also provided the Moloto group an avenue to fabricate hierarchical nanostructures in the form of nanoflowers of MoSe 2, NbSe 2 and WS 2 by varying the reaction parameters.…”

Section: Introductionmentioning

confidence: 99%

Colloidal Synthesis of Zirconium Disulphide Nanostructures and their Stability Against Oxidation

et al. 2022

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The need to exploit the exotic properties of ZrS2 synthesized via colloidal means is imperative. For almost a decade now there has been no literature on the colloidal synthesis of ZrS2 nanomaterials. Meanwhile, several publications are available on other methods of synthesis mostly chemical vapour transport (CVT) and chemical vapour deposition (CVD). The synthesized bulk material from the CVT method is further subjected to exfoliation (mechanical or liquid) to obtain mono or few‐layers of ZrS2. With the colloidal method, there is a possibility of the oxide being formed during the synthesis of ZrS2 and likely destabilization of the nanomaterial after synthesis on exposure to ambient environment. In this study, both the heat up and hot injection methods were employed to fabricate various morphologies of ZrS2 nanomaterials. The metal and sulphur precursors were dissolved in a mixture of octadecene (ODE) and oleic acid (OA); and refluxed at a temperature of 290 °C in the presence of nitrogen gas. ODE served the role of non‐coordinating solvent, while OA served as the capping agent. Nanorods, nanospheres and nanosheets were obtained from the heat up method. Meanwhile, the hot injection approach produced nanosheets and nanospheres with well noticeable hollow centres. Powder X‐ray diffractometer (PXRD) validated the formation of the ZrS2 hexagonal phase with traces of oxides of zirconium, ZrO2. The peak of S2p was conspicuously absent while the Zr3d peak was well noticeable in the XPS spectra. XPS and EDS measurements confirmed the replacement of the sulphur atom by the O atom on the surface of the nanomaterials. Only one exciton peak was observed for the absorption spectra from both the heat up and hot injection methods; and thermal thermogravimetry analysis (TGA) revealed three plateaux of decomposition of the nanomaterials.

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Evolution of In2S3 Nanoplates with Time

Cited by 5 publications

References 32 publications

Unraveling the Growth Mechanism Forming Stable γ-In₂S₃ and β-In₂S₃ Colloidal Nanoplatelets

Unraveling the Growth Mechanism Forming Stable γ-In₂S₃ and β-In₂S₃ Colloidal Nanoplatelets

Elucidating the structural properties of gold selenide nanostructures

Colloidal Synthesis of Zirconium Disulphide Nanostructures and their Stability Against Oxidation

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Evolution of In2S3 Nanoplates with Time

Cited by 5 publications

References 32 publications

Unraveling the Growth Mechanism Forming Stable γ-In2S3 and β-In2S3 Colloidal Nanoplatelets

Unraveling the Growth Mechanism Forming Stable γ-In2S3 and β-In2S3 Colloidal Nanoplatelets

Elucidating the structural properties of gold selenide nanostructures

Colloidal Synthesis of Zirconium Disulphide Nanostructures and their Stability Against Oxidation

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Product

Resources

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Unraveling the Growth Mechanism Forming Stable γ-In₂S₃ and β-In₂S₃ Colloidal Nanoplatelets

Unraveling the Growth Mechanism Forming Stable γ-In₂S₃ and β-In₂S₃ Colloidal Nanoplatelets