Ferrous sulfate heptahydrate (FeSO4·7H2O, Sigma Aldrich) was used to synthesize the dendritically structured α-Fe by an electric-field-induced and electrochemical reduction method.44 (link) The hierarchically structured dendritic pyrite was obtained via thermal sulfidation of the as-synthesized dendritic α-Fe at 450 °C for 4 hours with a heating and cooling rate of 15 °C per minute under a continuous argon gas flow. Elemental sulfur (99.5–100.5%, Sigma Aldrich) was placed at the edge of the furnace, where it reached about 140 °C and formed a melt. The resulting sulphur vapour was carried by the argon gas flow over the dendritic nanostructured α-Fe.
Elemental sulfur
Manufactured by Merck Group
Elemental sulfur is a naturally occurring chemical element that is widely used in various industrial and agricultural applications. It is a yellow, crystalline solid with the chemical formula S. Elemental sulfur serves as a key raw material in the production of various chemicals, including sulfuric acid, fertilizers, and other sulfur-based compounds.
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Lab products found in correlation
Oleylamine, by Merck Group (2 mentions)
Ferrous sulfate heptahydrate feso4 7h2o, by Merck Group (1 mentions)
Litfsi, by Merck Group (1 mentions)
Lino3, by Merck Group (1 mentions)
Dol dme, by Merck Group (1 mentions)
Li2s6, by Merck Group (1 mentions)
Indium chloride, by Merck Group (1 mentions)
Dodecanthiol, by Merck Group (1 mentions)
1 octadecene, by Thermo Fisher Scientific (1 mentions)
Sodium oleate, by Merck Group (1 mentions)
2 methyltetrahydrofuran, by Merck Group (1 mentions)
Ethanol, by Merck Group (1 mentions)
Oleic acid, by Merck Group (1 mentions)
Tetrahydrofuran, by Merck Group (1 mentions)
1 butanol, by Merck Group (1 mentions)
6 protocols using elemental sulfur
1
Dendritic Pyrite Synthesis via Thermal Sulfidation
2
Sulfur Electrode Fabrication for Lithium-Sulfur Batteries
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To prepare the sulfur electrodes, elemental sulfur (99.5%, Sigma-Aldrich),
Super P carbon, and PVDF binder in NMP (5% weight ratio) were thoroughly
mixed with a weight ratio of 65:30:5 in a dispensing system. The resultant
slurry was cast onto an aluminum foil with a thickness of 100 μm
using a doctor blade method. The thickness of the slurry was about
100 μm. The sulfur electrodes were dried in vacuum at 65 °C
for 10 h and then cut into circular pellets (Ø 10 mm). The typical sulfur loading for each electrode was 1.5 mg·cm–2. The cell was assembled in an argon-filled glovebox
(H2O and O2 concentration <1 ppm) using a
standard CR2032 coin cell. The cell used the sulfur electrode as the
cathode, metallic lithium as the anode (Ø 12
mm), UiO–PP as the separator, and 1.0 M bis(trifluoromethane)sulfonimide
lithium salt (LiTFSI, battery grade, Sigma-Aldrich) in DOL (anhydrous,
Sigma-Aldrich)/DME (anhydrous, Sigma-Aldrich) as the electrolyte (15
μL), respectively. The volume ratio of DOL/DME was 1:1 in the
electrolyte solution to which a small amount of LiNO3 (1%
weight ratio, anhydrous, Sigma-Aldrich) was added.
Super P carbon, and PVDF binder in NMP (5% weight ratio) were thoroughly
mixed with a weight ratio of 65:30:5 in a dispensing system. The resultant
slurry was cast onto an aluminum foil with a thickness of 100 μm
using a doctor blade method. The thickness of the slurry was about
100 μm. The sulfur electrodes were dried in vacuum at 65 °C
for 10 h and then cut into circular pellets (Ø 10 mm). The typical sulfur loading for each electrode was 1.5 mg·cm–2. The cell was assembled in an argon-filled glovebox
(H2O and O2 concentration <1 ppm) using a
standard CR2032 coin cell. The cell used the sulfur electrode as the
cathode, metallic lithium as the anode (Ø 12
mm), UiO–PP as the separator, and 1.0 M bis(trifluoromethane)sulfonimide
lithium salt (LiTFSI, battery grade, Sigma-Aldrich) in DOL (anhydrous,
Sigma-Aldrich)/DME (anhydrous, Sigma-Aldrich) as the electrolyte (15
μL), respectively. The volume ratio of DOL/DME was 1:1 in the
electrolyte solution to which a small amount of LiNO3 (1%
weight ratio, anhydrous, Sigma-Aldrich) was added.
3
CVD Growth of MoS2 on Exfoliated hBN
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We have grown
monolayer MoS2 onto exfoliated hBN flakes using the CVD
growth method.24 (link) hBN flakes were prepared
using the mechanical exfoliation method on a quartz substrate. As
precursors, we used molybdenum trioxide (MoO3, Sigma-Aldrich,
99.5%) and elemental sulfur (Sigma-Aldrich, 99.98%). Sulfur powder
and a quartz substrate with hBN flakes were loaded into a quartz tube
with an inner diameter of 26 mm. MoO3 was placed in a quartz
tube with an inner diameter of 10 mm, and the quartz tube was placed
inside the larger diameter quartz tube to avoid unwanted reactions
between S and MoO3, and then, under an Ar flow of 200 sccm,
we heated the quartz tubes with a three-zone electric furnace at 200,
750, and 1100 °C for S, MoO3, and the substrate, respectively.
The typical growth time is 20 min.
monolayer MoS2 onto exfoliated hBN flakes using the CVD
growth method.24 (link) hBN flakes were prepared
using the mechanical exfoliation method on a quartz substrate. As
precursors, we used molybdenum trioxide (MoO3, Sigma-Aldrich,
99.5%) and elemental sulfur (Sigma-Aldrich, 99.98%). Sulfur powder
and a quartz substrate with hBN flakes were loaded into a quartz tube
with an inner diameter of 26 mm. MoO3 was placed in a quartz
tube with an inner diameter of 10 mm, and the quartz tube was placed
inside the larger diameter quartz tube to avoid unwanted reactions
between S and MoO3, and then, under an Ar flow of 200 sccm,
we heated the quartz tubes with a three-zone electric furnace at 200,
750, and 1100 °C for S, MoO3, and the substrate, respectively.
The typical growth time is 20 min.
4
Synthesis of Li2S6 Solution
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Twenty millimolar of Li2S6 solution was prepared by mixing stoichiometric amounts of elemental sulfur (Sigma-Aldrich) and Li2S (Alfa Aesar) in DOL: DME (Sigma-Aldrich, volume ratio 1:1). A homogenous dark–yellow solution of Li2S6 was obtained after stirring for 24 h at 130 °C.
5
Synthesis and Aging of In2S3 Quantum Dots
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Indium Chloride (99.9%, Sigma Aldrich), Elemental Sulfur (99.9%, Sigma Aldrich) were used as a source material for In3+ and S2− ions respectively. Dodecanthiol (99%, Sigma Aldrich) and Oleylamine (98%, Aldrich) were used for the capping purpose. Acetone (99%, Loba Chemicals) was used for aging study. A 0.001 mol of Indium Chloride was dissolved in 1-Dodecanthiol and stirred under Argon atmosphere at 110 °C for half an hour. Elemental Sulfur was dissolved in Oleylamine and stirred under vacuum at 90 °C for half an hour. After that Elemental Sulfur solution was quickly injected into Indium Chloride solution and mixed under Argon atmosphere for 20 min to grow indium sulfide quantum dots. As obtained quantum dots were purified by means of using equimolar ratio of Hexane (Solvent) and Methanol (Antisolvent) under centrifugation at 5000 rpm for 30 min. As prepared Oleylamine and 1-Dodecanthiol capped blue emitting In2S3 quantum dots were dissolved in Acetone and kept under aging for 1 month.
6
Synthesis and Characterization of Doped Nanoparticles
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Oleylamine (OAm; technical grade, 70%), oleic acid (OA; technical grade, 90%), elemental sulfur (S 8 ; ≥99.5%), sodium oleate (Na(oleate); ≥99%), tetrahydrofuran (THF, ≥99.9%), 2methyltetrahydrofuran (CH 3 THF, >99%), ethanol (CH 3 CH 2 OH, >96%) and 1-butanol (CH 3 (CH 2 ) 3 OH, >99%); were purchased from Sigma-Aldrich. 1-octadecene (ODE; technical grade, 90%) was purchased from Acros Organics. Gadolinium acetylacetonate hydrate (Gd(acac) 3 •xH 2 O; 99.9%) and cerium acetylacetonate hydrate (Ce(acac) 3 •xH 2 O; 99.9%) were purchased from Strem Chemicals. All products were used as received without further purification. 6 inch-diameter p-type (100) Si wafer with a resistivity of 1-10 ohm cm was purchased from Siltronix Silicon Technologies. Fluorine doped-tin oxide thin films on glass substrates were obtained from Solems with a typical coating thickness of 80 nm and a glass thickness of 1.1 mm.
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