Solvothermal synthesis of graphene-Sb2S3 composite and the degradation activity under visible light

Tao, Wenguang; Chang, Jiuli; Wu, Dapeng; Gao, Zhiyong; Duan, Xingwu; Xu, Fang; Jiang, Kai

doi:10.1016/j.materresbull.2012.11.053

Cited by 41 publications

(12 citation statements)

References 29 publications

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“…The vibrations at 1632 and 1385 cm −1 are the signature absorption peaks of the stretching vibration of the six-member aromatic carbon containing double bonds, whereas the peaks at 1116 cm −1 are the characteristic peaks of the carbonyl group. 28 An intense peak at 615 cm −1 and the shoulder peak at 997 cm −1 are deformed skeleton peaks of the C−H bond in styrene or mono-substituted benzene rings, indicating the presence of S atoms in the sp 2 carbon matrix (peak at 1373 cm −1 ). 26 Thus, the absence of carboxylic stretching (1700 cm −1 ) and bending (1235 cm −1 ) vibrational peaks and 29 the presence of prominent peaks at 1632, 1116, and 615 cm −1 confirm the restoration of the aromatic sp 2 hybrid carbon skeleton owing to the reduction and monoatomic substitution in the styrene.…”

Section: Resultsmentioning

confidence: 99%

Sb₂S₃ Nanoparticles Anchored or Encapsulated by the Sulfur-Doped Carbon Sheet for High-Performance Supercapacitors

Sahoo

Singh

Yun

et al. 2019

ACS Appl. Mater. Interfaces

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The specific capacitance and energy density of antimony trisulfide (Sb2S3)@carbon supercapacitors (SCs) have been limited and are in need of significant improvement. In this work, Sb2S3 nanoparticles were selectively encapsulated or anchored in a sulfur-doped carbon (S-carbon) sheet depending on the use of microwave-assisted synthesis. The microwave-triggered Sb2S3 nanoparticle growth resulted in core–shell hierarchical spherical particles of uniform diameter assembled with Sb2S3 as the core and an encapsulated S-carbon layer as the shell (Sb2S3-M@S-C). Without the microwave mediation, the other nanostructure was found to comprise fine Sb2S3 nanoparticles widely anchored in the S-carbon sheet (Sb2S3-P@S-C). Structural and morphological analyses confirmed the presence of encapsulated and anchored Sb2S3 nanoparticles in the carbon. These two materials exhibited higher specific capacitance values of 1179 (0 to +1.0 V) and 1380 F·g–1 (−0.8 to 0 V) at a current density of 1 A·g–1, respectively, than those previously reported for Sb2S3 nanomaterials in considerable SCs. Furthermore, both materials exhibited outstanding reversible capacitance and cycle stability when used as SC electrodes while retaining over 98% of the capacitance after 10 000 cycles, which indicates their long-term stability. Furthermore, a hybrid Sb2S3-M@S-C/Sb2S3-P@S-C device was designed, which delivers a remarkable energy density of 49 W·h·kg–1 at a power density of 2.5 kW·kg–1 with long-term cycle stability (94% over 10 000 cycles) and is comparable to SCs in the recent literature. Finally, a light-emitting diode (LED) panel comprising 32 LEDs was powered using three pencil-type hybrid SCs in series.

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Section: Resultsmentioning

confidence: 99%

Sb₂S₃ Nanoparticles Anchored or Encapsulated by the Sulfur-Doped Carbon Sheet for High-Performance Supercapacitors

Sahoo

Singh

Yun

et al. 2019

ACS Appl. Mater. Interfaces

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“…After several hours of reaction, nucleation, and growth, the Sb 2 S 3 nanocrystals were formed while at the same time GO was reduced. Without the use of GO, only Sb 2 S 3 spheres are obtained …”

Section: Resultsmentioning

confidence: 99%

Ternary Organic Solar Cells with Reduced Graphene Oxide–Sb₂S₃ Hybrid Nanosheets as the Cascade Material

et al. 2015

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We demonstrate that the efficiency of ap oly[N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)](PCDTBT):[6,6]-phenyl-C 71 -butyric-acidmethyl-ester( PC 71 BM) bulk heterojunction solar cell can be improved from 5.53 %t o6 .81 %b yi ncorporating reduced graphene oxide-antimony sulfide (rGO-Sb 2 S 3 )h ybrid nanosheets as the third component. By using this hybrid as the cascade material, we combinet he ultra-conductive multi charge transfer paths provided by graphene with the favorable arrangement of the material energy bands due to the presence of Sb 2 S 3 nanocrystals.T he higher lowestu noccupied molecular orbital( LUMO) energy level of rGO-Sb 2 S 3 relative to PC 71 BM results in an increase of the open circuit voltageu pon increasing the rGO-Sb 2 S 3 concentration,w hile the photocurrent and fill factor are enhanced due to the presence of more exciton dissociation interfaces and more efficient charge transport.

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“…RhB molecules are excited to produce electron-hole pairs under visible light irradiation [29]. The conduction band potential of SnO 2 is 0.4 V [8], which is more positive than the work function of graphene (−0.08 V vs SHE) [30]. Therefore, the photoexcited electrons are effectively transferred from RhB * to the CB of SnO 2 via graphene and to produce O 2 to active oxygen species [28].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of polymer/rGO/SnO2 hierarchical structure and its photodegradation of organic pollutants

Liang

2015

Colloid Polym Sci

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Tin dioxide (SnO 2 ) behaves excellent properties, but the high recombination rate of photoexcited electron-hole pairs combined with a large band gap restricts its photocatalytic applications. Comparing with pure SnO 2 nanospheres, the photocatalytic degradation of rhodamine B (RhB) over polymer/reduced graphene oxide (rGO)/SnO 2 composites was enhanced. For the synthesis, graphene oxide (GO) nanosheets were wrapped on the surface of polymer microspheres to form a polymer/GO core-shell structure. Then, SnO 2 nanospheres were decorated on polymer/GO microspheres under a hydrothermal condition, meanwhile GO was reduced to rGO. Therefore, polymer/rGO/SnO 2 hierarchical structure was obtained. As graphene promote separation of the photoexcited electron-hole pairs and the conduction band potential of SnO 2 is more positive than the work function of graphene, electrons can be quickly transferred to the conduction band of SnO 2 via graphene leaving over more holes on the surface of catalyst for the de-ethylation of RhB.

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Solvothermal synthesis of graphene-Sb2S3 composite and the degradation activity under visible light

Cited by 41 publications

References 29 publications

Sb₂S₃ Nanoparticles Anchored or Encapsulated by the Sulfur-Doped Carbon Sheet for High-Performance Supercapacitors

Sb₂S₃ Nanoparticles Anchored or Encapsulated by the Sulfur-Doped Carbon Sheet for High-Performance Supercapacitors

Ternary Organic Solar Cells with Reduced Graphene Oxide–Sb₂S₃ Hybrid Nanosheets as the Cascade Material

Synthesis of polymer/rGO/SnO2 hierarchical structure and its photodegradation of organic pollutants

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Solvothermal synthesis of graphene-Sb2S3 composite and the degradation activity under visible light

Cited by 41 publications

References 29 publications

Sb2S3 Nanoparticles Anchored or Encapsulated by the Sulfur-Doped Carbon Sheet for High-Performance Supercapacitors

Sb2S3 Nanoparticles Anchored or Encapsulated by the Sulfur-Doped Carbon Sheet for High-Performance Supercapacitors

Ternary Organic Solar Cells with Reduced Graphene Oxide–Sb2S3 Hybrid Nanosheets as the Cascade Material

Synthesis of polymer/rGO/SnO2 hierarchical structure and its photodegradation of organic pollutants

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Product

Resources

About

Sb₂S₃ Nanoparticles Anchored or Encapsulated by the Sulfur-Doped Carbon Sheet for High-Performance Supercapacitors

Sb₂S₃ Nanoparticles Anchored or Encapsulated by the Sulfur-Doped Carbon Sheet for High-Performance Supercapacitors

Ternary Organic Solar Cells with Reduced Graphene Oxide–Sb₂S₃ Hybrid Nanosheets as the Cascade Material