The Effects of Temperature on Iron Sulfide Nanocrystals Prepared from Thermal Decomposition of Bis-(N-methylbenzyldithiocarbamato)iron(II) Complex

Ajibade, Peter A.; Paca, Athandwe M.

doi:10.1007/s10904-019-01264-3

Cited by 8 publications

(5 citation statements)

References 34 publications

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“…Thus, while heating [Fe(S 2 CNR 2 ) 2 ], [Fe(S 2 CNR 2 ) 3 ] and cis -[Fe(CO) 2 (S 2 CNR 2 ) 2 ] in OLA all lead to the generation of the same decomposition species, postulated as [Fe(S 2 CNR 2 ) 2 (OLA) n ], the nature of the final products still depends (to some extent) on the SSP used. Two further publications claim to use [Fe(S 2 CNR 2 ) 2 ] for solvothermal decomposition, , but most likely they are the corresponding Fe(III) complexes as reactions were not carried out under an inert atmosphere.…”

Section: Binary Sulfidesmentioning

confidence: 99%

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

2021

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Nanodimensional metal sulfides are a developing class of low-cost materials with potential applications in areas as wide-ranging as energy storage, electrocatalysis, and imaging. An attractive synthetic strategy, which allows careful control over stoichiometry, is the single source precursor (SSP) approach in which well-defined molecular species containing preformed metal–sulfur bonds are heated to decomposition, either in the vapor or solution phase, resulting in facile loss of organics and formation of nanodimensional metal sulfides. By careful control of the precursor, the decomposition environment and addition of surfactants, this approach affords a range of nanocrystalline materials from a library of precursors. Dithiocarbamates (DTCs) are monoanionic chelating ligands that have been known for over a century and find applications in agriculture, medicine, and materials science. They are easily prepared from nontoxic secondary and primary amines and form stable complexes with all elements. Since pioneering work in the late 1980s, the use of DTC complexes as SSPs to a wide range of binary, ternary, and multinary sulfides has been extensively documented. This review maps these developments, from the formation of thin films, often comprised of embedded nanocrystals, to quantum dots coated with organic ligands or shelled by other metal sulfides that show high photoluminescence quantum yields, and a range of other nanomaterials in which both the phase and morphology of the nanocrystals can be engineered, allowing fine-tuning of technologically important physical properties, thus opening up a myriad of potential applications.

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Section: Binary Sulfidesmentioning

confidence: 99%

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

2021

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“…Figure exhibits the UV–vis absorbance spectra of as-synthesized PDTC, Cu[PDTC] 2 , and Co[PDTC] 2 complexes. Here, peaks at 253 nm were attributed to π → π* transitions related to the N–CS group where the absorption band at 286 nm was associated with transitions of the S–CS group present in PDTC (Figure a) . The UV–vis spectra of Cu[PDTC] 2 show an additional peak at 432 nm which is due to the electronic transition from CS π* orbitals to 3d orbitals of Cu(II) (Figure c), whereas the electronic transition from CS π* orbitals to the 3d orbital of Co(II) leads to an absorption band at 394 nm for the Co[PDTC] 2 complex (Figure b).…”

Section: Resultsmentioning

confidence: 97%

Interfacial Engineering of CuCo₂S₄/g-C₃N₄ Hybrid Nanorods for Efficient Oxygen Evolution Reaction

et al. 2021

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Altering the morphology of electrochemically active nanostructured materials could fundamentally influence their subsequent catalytic as well as oxygen evolution reaction (OER) performance. Enhanced OER activity for mixed-metal spinel-type sulfide (CuCo2S4) nanorods is generally done by blending the material that has high conductive supports together with those having a high surface volume ratio, for example, graphitic carbon nitrides (g-C3N4). Here, we report a noble-metal-free CuCo2S4 nanorod-based electrocatalyst appropriate for basic OER and neutral media, through a simple one-step thermal decomposition approach from its molecular precursors pyrrolidine dithiocarbamate-copper(II), Cu[PDTC]2, and pyrrolidine dithiocarbamate-cobalt(II), Co[PDTC]2 complexes. Transmission electron microscopy (TEM) images as well as X-ray diffraction (XRD) patterns suggest that as-synthesized CuCo2S4 nanorods are highly crystalline in nature and are connected on the g-C3N4 support. Attenuated total reflectance–Fourier-transform infrared (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy studies affirm the successful formation of bonds that bridge (Co–N/S–C) at the interface of CuCo2S4 nanorods and g-C3N4. The kinetics of the reaction are expedited, as these bridging bonds function as an electron transport chain, empowering OER electrocatalytically under a low overpotential (242 mV) of a current density at 10 mA cm–2 under basic conditions, resulting in very high durability. Moreover, CuCo2S4/g-C3N4 composite nanorods exhibit a high catalytic activity of OER under a neutral medium at an overpotential of 406 mV and a current density of 10 mA cm–2.

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“…[54] Peaks appeared at 1497, 1438, 1394, and 1289 cm À 1 due to stretching vibration of CÀ N bond of À CÀ NÀ C and À CÀ N À S units. [55,56] Moreover, peaks in the region of 1300-900 cm À 1 were associated with the stretching vibration of C=S and CÀ S bonds of À CSS À group. [56][57][58] Weak peak at 758 cm À 1 can be assigned to À CH 2 rocking mode.…”

Section: Resultsmentioning

confidence: 98%

“…ATR‐FTIR spectrum of DEDTC showed peaks at 2952 and 2850 cm −1 are corresponding to asymmetric and symmetric stretching of −CH 3 group present in DEDTC, respectively (Figure 1b–i) [54] . Peaks appeared at 1497, 1438, 1394, and 1289 cm −1 due to stretching vibration of C−N bond of −C

{-}

{-}

C and −C

{-}

{-}

S units [55,56] . Moreover, peaks in the region of 1300–900 cm −1 were associated with the stretching vibration of C=S and C−S bonds of

{-{CSS}^{-}}

group [56–58] .…”

Section: Resultsmentioning

confidence: 98%

Facile Fabrication of Ni₉S₈/Ag₂S Intertwined Structures for Oxygen and Hydrogen Evolution Reactions

et al. 2023

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Here, we report the fabrication of the unique intertwined Ni9S8/Ag2S composite structure with hexagonal shape from their molecular precursors by one‐pot thermal decomposition. Various spectroscopic and microscopic techniques were utilized to confirm the Ni9S8/Ag2S intertwined structure. Powder X‐ray Powder Diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS) analysis suggest that there is an enrichment of Ni9S8 phase in Ni9S8/Ag2S. The presence of Ag2S in Ni9S8/Ag2S improves the conductivity by reducing the interfacial energy and charge transfer resistance. When Ni9S8/Ag2S is employed as an electrocatalyst for electrochemical oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) activity, it requires a low overpotential of 152 mV for HER and 277 mV for OER to obtain the geometrical current density of 10 mA cm−2, which is definitely superior to that of its components Ni9S8 and Ag2S. This work provides a simple design route to develop an efficient and durable electrocatalyst with outstanding OER and HER performance and the present catalyst (Ni9S8/Ag2S) deserves as a potential candidate in the field of energy conversion systems.

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The Effects of Temperature on Iron Sulfide Nanocrystals Prepared from Thermal Decomposition of Bis-(N-methylbenzyldithiocarbamato)iron(II) Complex

Cited by 8 publications

References 34 publications

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Interfacial Engineering of CuCo₂S₄/g-C₃N₄ Hybrid Nanorods for Efficient Oxygen Evolution Reaction

Facile Fabrication of Ni₉S₈/Ag₂S Intertwined Structures for Oxygen and Hydrogen Evolution Reactions

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The Effects of Temperature on Iron Sulfide Nanocrystals Prepared from Thermal Decomposition of Bis-(N-methylbenzyldithiocarbamato)iron(II) Complex

Cited by 8 publications

References 34 publications

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Interfacial Engineering of CuCo2S4/g-C3N4 Hybrid Nanorods for Efficient Oxygen Evolution Reaction

Facile Fabrication of Ni9S8/Ag2S Intertwined Structures for Oxygen and Hydrogen Evolution Reactions

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Product

Resources

About

Interfacial Engineering of CuCo₂S₄/g-C₃N₄ Hybrid Nanorods for Efficient Oxygen Evolution Reaction

Facile Fabrication of Ni₉S₈/Ag₂S Intertwined Structures for Oxygen and Hydrogen Evolution Reactions