Influences of synthetic conditions on the photocatalytic performance of ZnS/graphene composites

Jin, Xuekun; Chen, Fengjuan; Jia, Dianzeng; Cao, Yali; Duan, Haiming; Long, Mengqiu; Yang, Linyu

doi:10.1016/j.jallcom.2018.11.271

Cited by 35 publications

(9 citation statements)

References 43 publications

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“…In addition, comparing the pure MoS 2 , a distinct red shift was shown, indicating that the g-C 3 N 4 /MoS 2 photocatalysts were more efficient in light harvesting under visible light irradiation. In addition, the separation of photoinduced carriers of the composites was clarified by the transient photocurrent response measurement [39]. To confirm superior photoinduced carriers in the composites of the g-C 3 N 4 /MoS 2 photocatalyst, the photocurrent response was evaluated in Na 2 SO 4 electrolyte [40].…”

Section: Analysis Of Photoluminescence Emission Spectra and Electrochemicalmentioning

confidence: 99%

Improvement of Photocatalytic Performance for the g-C₃N₄/MoS₂ Composite Used for Hypophosphite Oxidation

Guan

et al. 2020

Journal of Nanomaterials

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The synthesized g-C3N4/MoS2 composite was a high-efficiency photocatalytic for hypophosphite oxidation. In this work, a stable and cheap g-C3N4 worked as the chelating agent and combined with the MoS2 materials. The structures of the fabricated g-C3N4/MoS2 photocatalyst were characterized by some methods including X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectra (XPS). Moreover, the photocatalytic performances of various photocatalysts were measured by analyzing the oxidation efficiency of hypophosphite under visible light irradiation and the oxidation efficiency of hypophosphite using the g-C3N4/MoS2 photocatalyst which was 93.45%. According to the results, the g-C3N4/MoS2 composite showed a promising photocatalytic performance for hypophosphite oxidation. The improved photocatalytic performance for hypophosphite oxidation was due to the effective charge separation analyzed by the photoluminescence (PL) emission spectra. The transient photocurrent response measurement indicated that the g-C3N4/MoS2 composites (2.5 μA cm–2) were 10 times improved photocurrent intensity and 2 times improved photocurrent intensity comparing with the pure g-C3N4 (0.25 μA cm–2) and MoS2 (1.25 μA cm–2), respectively. The photocatalytic mechanism of hypophosphite oxidation was analyzed by adding some scavengers, and the recycle experiments indicated that the g-C3N4/MoS2 composite had a good stability.

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Section: Analysis Of Photoluminescence Emission Spectra and Electrochemicalmentioning

confidence: 99%

Improvement of Photocatalytic Performance for the g-C₃N₄/MoS₂ Composite Used for Hypophosphite Oxidation

Guan

et al. 2020

Journal of Nanomaterials

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“…At present, our group has synthesized a series of nanomaterials with excellent photoelectric properties by using the low-temperature solid-phase chemical method. [27][28][29][30] However, through consulting numerous studies, it has been found that the synthesis of noble metals/suldes composites using this method have not been reported so far.…”

Section: Introductionmentioning

confidence: 99%

Facile strategy for the fabrication of noble metal/ZnS composites with enhanced photocatalytic activities

et al. 2020

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“…Metal sulfide photocatalysts compared to the metal oxide photocatalysts have a advantageous band structure for photocatalytic hydrogen evolution under visible light [1][2][3][4][5][6]. Among the various metal sulfide photocatalysts, the ternary metal chalcogenide ZnIn 2 S 4 may be superior to other sulfides due to low toxicity, good absorption of visible light and stability during photocatalysis [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Efficient photocatalytic hydrogen production by Zn(1−2x)CuxIn2S(4−1.5x) co-doped with Cu and excess in under visible light irradiation

Tateishi¹,

Furukawa

Katsumata

et al. 2020

SN Appl. Sci.

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Herein, in order to achieve visible light responsive ability and efficient photogenerated electron-hole pairs separation Zn (1−2x) Cu x In 2 S (4−1.5x) photocatalysts were fabricated through a simple one-step solvothermal method. The effects of the Cu/Zn molar ratios on the crystal structure, morphology, optical property, as well as photocatalytic activity have been investigated in detail. In addition, the stability of the photocatalysts and apparent quantum yield were measured. The band gap became wider due to the decrease in Cu doping and Zn. The band gap of Zn (1−2x) Cu x In 2 S (4−1.5x) (x = 0 ~ 0.20) decreased from 2.67 to 1.76 eV with the increase in x value. When Pt was used as a co-catalyst, H 2 evolution rates up to 2400 μmol g −1 h −1 were achieved over Zn 0.74 Cu 0.13 In 2 S 3.805 . Furthermore, when PdS was used as a co-catalyst, the hydrogen generation rates were improved with up to 3600 μmol g −1 h −1 by optimizing the Zn (1−2x) Cu x In 2 S (4−1.5x) . The apparent quantum yield achieved 16% at 420 nm, 9.4% at 500 nm and 9.1% at 600 nm when x = 0.20. The improved visible light photocatalytic performance is considered to be due to the manipulation of the band structure and efficient photogenerated charge separation due to the effects of Cu doping and composition ratio.

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Influences of synthetic conditions on the photocatalytic performance of ZnS/graphene composites

Cited by 35 publications

References 43 publications

Improvement of Photocatalytic Performance for the g-C₃N₄/MoS₂ Composite Used for Hypophosphite Oxidation

Improvement of Photocatalytic Performance for the g-C₃N₄/MoS₂ Composite Used for Hypophosphite Oxidation

Facile strategy for the fabrication of noble metal/ZnS composites with enhanced photocatalytic activities

Efficient photocatalytic hydrogen production by Zn(1−2x)CuxIn2S(4−1.5x) co-doped with Cu and excess in under visible light irradiation

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Influences of synthetic conditions on the photocatalytic performance of ZnS/graphene composites

Cited by 35 publications

References 43 publications

Improvement of Photocatalytic Performance for the g-C3N4/MoS2 Composite Used for Hypophosphite Oxidation

Improvement of Photocatalytic Performance for the g-C3N4/MoS2 Composite Used for Hypophosphite Oxidation

Facile strategy for the fabrication of noble metal/ZnS composites with enhanced photocatalytic activities

Efficient photocatalytic hydrogen production by Zn(1−2x)CuxIn2S(4−1.5x) co-doped with Cu and excess in under visible light irradiation

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Improvement of Photocatalytic Performance for the g-C₃N₄/MoS₂ Composite Used for Hypophosphite Oxidation

Improvement of Photocatalytic Performance for the g-C₃N₄/MoS₂ Composite Used for Hypophosphite Oxidation