Measurement and Correlation of the Solubilities of Sulfur S<sub>8</sub> in 10 Solvents

Wang, Rongjie; Shen, Benxian; Sun, Hui; Zhao, Jigang

doi:10.1021/acs.jced.7b00699

Cited by 21 publications

(19 citation statements)

References 21 publications

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“…To follow the formation kinetics of the nanoparticles, the reaction was stopped at different characteristic points in time by abrupt cooling. Afterward, the received products were washed by repeated centrifugation and redispersion and by washing with HAS, a 2:3 volumetric mixture of chlorobenzene and 1,2-dichlorobenzene to remove excess sulfur [ 22 ]. The experiments were repeated at least three times to ensure reproducibility.…”

Section: Resultsmentioning

confidence: 99%

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Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles

Joschko

Wafo

Malsi

et al. 2021

Beilstein J. Nanotechnol.

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Sb2S3 is a promising nanomaterial for application in solar cells and in the fields of electronics and optoelectronics. Herein, Sb2S3 nanoparticles were prepared via the hot-injection approach. In contrast to earlier work, the reaction temperature was decreased to 150 °C so that the reaction was slowed down and could be stopped at defined reaction stages. Thereby, the formation mechanism of the nanomaterial and the associated kinetics could be revealed. Based on morphological and structural analyses, it is suggested that seed particles (type 0) formed immediately after injecting the antimony precursor into the sulfur precursor. These seeds fused to form amorphous nanoparticles (type I) that contained a lower percentage of sulfur than that corresponding to the expected stoichiometric ratio of Sb2S3. The reason for this possibly lies in the formation of an oxygen- or carbon-containing intermediate during the seeding process. Afterward, the type I nanoparticles aggregated into larger amorphous nanoparticles (type II) in a second hierarchical assembly process and formed superordinate structures (type III). This process was followed by the crystallization of these particles and a layer-like growth of the crystalline particles by an Ostwald ripening process at the expense of the amorphous particles. It was demonstrated that the kinetic control of the reaction allowed tuning of the optical band gap of the amorphous nanoparticles in the range of 2.2–2.0 eV. On the contrary, the optical band gap of the crystalline particles decreased to a value of 1.7 eV and remained constant when the reaction progressed. Based on the proposed formation mechanism, future syntheses for Sb2S3 particles can be developed, allowing tuning of the particle properties in a broad range. In this way, the selective use of this material in a wide range of applications will become possible.

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Section: Resultsmentioning

confidence: 99%

“…The received product was precipitated by adding 30 mL IPA and separated by centrifugation at 50–2500 g for 5–20 min (depending on the reaction time; for details, see Table S1 in Supporting Information File 1 ). The precipitate was redispersed in 20 mL HAS [ 22 ]. Precipitation and centrifugation were repeated twice.…”

Section: Methodsmentioning

confidence: 99%

Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles

Joschko

Wafo

Malsi

et al. 2021

Beilstein J. Nanotechnol.

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“…Literature reports indicate that some organic compounds can facilitate the dissolution of elemental sulfur . As the likely active species in the organic catalyst are sulfur-based species, we decided to study the effect of such compounds on the solubility of elemental sulfur by adding them to the heavy oil phase.…”

Section: Results and Discussionmentioning

confidence: 99%

NO_X and SO_X Flue Gas Treatment System Based on Sulfur-Enriched Organic Oil in Water Emulsion

2021

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Nitrogen (NO X ) and sulfur (SO X ) oxides, the major gaseous pollutants emitted from fossil fuel combustion, have significant health and environmental concerns. Environmental regulations limit these pollutant emissions to tolerable levels. Currently, these pollutants are treated by flue gas desulfurization (SO X removal) and selective catalytic reduction (NO X removal) processes. However, these technologies require large footprints, use expensive catalysts, and operate under high working temperatures. A new catalyst is reported herein, based on sulfur-enriched oil emulsified with water, where the active catalytic species are sulfurbased oxides. The catalyst has been developed using O 2 as the oxidation reagent in a low-temperature wet scrubber rather than H 2 O 2 or O 3 that are presently used. The catalytically oxidized pollutants are converted to produce ammonium fertilizers by NH 4 OH addition. As a result of treatment with this novel catalyst, we observed reductions in emissions of SO X and NO X of >85% and 23%, respectively. The catalyst production and the wet scrubbing process are discussed in detail.

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“…To follow the formation kinetics of the nanoparticles, the reaction was stopped at different characteristic times by abrupt cooling. Afterward, the received products were washed by repeated centrifugation and redispersion and washing with a 2:3 volumetric mixture of chlorobenzene and 1,2dichlorobenzene (HAS) to remove excess sulfur [22]. The experiments were repeated at least three times to ensure reproducibility.…”

Section: Resultsmentioning

confidence: 99%

“…S1 in the Supporting Information). The precipitate was redispersed in 20 mL of a 2:3 mixture (volumetric) of chlorobenzene and 1,2-dichlorobenzene (HAS) [22]. Precipitation and centrifugation were repeated twice.…”

Section: Synthesis Undoped Sb2s3 Nanoparticlesmentioning

confidence: 99%

Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles

Joschko¹,

Wafo²,

Malsi³

et al. 2021

Preprint

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Sb2S3 is a promising nanomaterial for application in solar cells and other fields of electronics and optoelectronics. Sb2S3 nanoparticles were prepared via the hot-injection approach. In contrast to earlier work, the reaction temperature was decreased to 150°C, so that the reaction was slowed down and could be stopped at defined reaction stages. Thereby, the formation mechanism of the nanomaterial and the associated kinetics could be revealed. Based on morphological and structural analysis, it is suggested that seed particles (type 0) form immediately after injecting the antimony precursor into the sulfur precursor. These seeds fuse to form amorphous nanoparticles (type I) that contain a lower percentage of sulfur than that corresponding to the expected stoichiometric ratio of Sb2S3. The reason for this possibly lies in the formation of an oxygen- or carbon-containing intermediate during the seeding process. Afterward, the type I nanoparticles aggregate into larger amorphous nanoparticles (type II) in a second hierarchical assembly process and form superordinated structures (type III). This process is followed by the crystallization of these particles and a layer-like growth of the crystalline particles by an Ostwald ripening process at the expense of the amorphous particles. It was demonstrated that the kinetic control of the reaction allows tuning of the optical bandgap of the amorphous nanoparticles in the range of 2.2 – 2.0 eV. On the contrary, the optical bandgap of the crystalline particles decreases to a value of 1.7 eV and remains constant when the reaction progresses. Based on the proposed formation mechanism, future syntheses for Sb2S3 particles can be developed, allowing tuning the particles' properties in a broad range. In this way, the selective use of this material in a wide range of applications will become possible.

show abstract

Measurement and Correlation of the Solubilities of Sulfur S₈ in 10 Solvents

Cited by 21 publications

References 21 publications

Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles

Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles

NO_X and SO_X Flue Gas Treatment System Based on Sulfur-Enriched Organic Oil in Water Emulsion

Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles

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Measurement and Correlation of the Solubilities of Sulfur S8 in 10 Solvents

Cited by 21 publications

References 21 publications

Revealing the formation mechanism and band gap tuning of Sb2S3 nanoparticles

Revealing the formation mechanism and band gap tuning of Sb2S3 nanoparticles

NOX and SOX Flue Gas Treatment System Based on Sulfur-Enriched Organic Oil in Water Emulsion

Revealing the formation mechanism and band gap tuning of Sb2S3 nanoparticles

Contact Info

Product

Resources

About

Measurement and Correlation of the Solubilities of Sulfur S₈ in 10 Solvents

Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles

Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles

NO_X and SO_X Flue Gas Treatment System Based on Sulfur-Enriched Organic Oil in Water Emulsion

Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles