A novel I-type 0D/0D ZnS@Cu3P heterojunction for photocatalytic hydrogen evolution

Cai, Wei‐Qin; Zhang, Fengjun; Wang, Yingrui; Li, Dongcai

doi:10.1016/j.inoche.2021.109046

Cited by 16 publications

(4 citation statements)

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“…The remarkable enhancement of the hydrogen production rate exhibits that the nanoheterojunction can improve the photocatalytic HER, which further demonstrates the requirement of this study. As shown in Table 1 [29][30][31][32][33], the composite catalyst MoS2/Co3O4 exhibits an excellent photocatalytic degradation and hydrogen evolution activity compared with other catalysts. 6a displays the absorbance signal peak intensity of 562 nm with an increasing light irradiation time.…”

Section: Photocatalytic Hydrogen Evolution and Stabilitymentioning

confidence: 95%

S-Scheme System of MoS2/Co3O4 Nanocomposites for Enhanced Photocatalytic Hydrogen Evolution and Methyl Violet Dye Removal under Visible Light Irradiation

Tien

Chen

2023

Coatings

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Photocatalytic hydrogen production joined with simultaneous organic compound removal is a potential but challenging approach for both environmental modification and reusable energy generation. In this study, we designed a nanocomposite method for the fabrication of MoS2/Co3O4 heterojunction with an extremely productive photocatalytic capability. The as-fabricated MoS2/Co3O4 nanocomposites displayed greatly enhanced the hydrogen production (3825 μmol/g/h) and methyl violet dye (MV) contaminant removal (apparent kinetic constant of 0.038 min−1) activity. The nanocomposites’ structures had a better specific surface area, numerous active sites, and enhanced the transport ability of charge carriers to promote the photocatalytic activity. The increase in Co3O4 improved the visible-light absorption efficiency and narrowed energy bandgap and served as a highway for charge carriers to facilitate the transfer and separation and inhibit the combination of photoinduced charge carriers. The migration route of the photoexcited charges, the formation pathway, and the function of various reactive oxygen species (such as O2− and .OH) are discussed. The optimized energy band structure and high electron transfer rate of the S-scheme heterojunction nanocomposite promotes the evolution of H2 and the removal of pollutants, which shows an excellent potential in a stable and efficient photocatalytic hydrogen evolution and environment remediation.

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Section: Photocatalytic Hydrogen Evolution and Stabilitymentioning

confidence: 95%

S-Scheme System of MoS2/Co3O4 Nanocomposites for Enhanced Photocatalytic Hydrogen Evolution and Methyl Violet Dye Removal under Visible Light Irradiation

Tien

Chen

2023

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“…36 Li et al prepared a direct Z-scheme ZnO/CdS hierarchical photocatalyst for enhanced photocatalytic H 2 production activity. 37 38 As a bimetallic sulfide, MnCo 2 S 4 has high electrical conductivity and a narrow band gap. Co has a higher oxidation potential, and Mn can provide multiple electrons, which can enrich the redox active centers on the catalyst surface and be widely used as electrode materials in electrocatalysis and supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al prepared a direct Z-scheme ZnO/CdS hierarchical photocatalyst for enhanced photocatalytic H 2 production activity . Li et al prepared ZnCo 2 S 4 /Zn 0.2 Cd 0.8 S nanocomposites by loading ZnCo 2 S 4 nanoparticles on Zn 0.2 Cd 0.8 S nanorods, and the formed Z-type structure effectively transferred the photogenerated holes and the efficiency of hydrogen production was improved …”

Section: Introductionmentioning

confidence: 99%

Reverse-Type-I MnCo₂S₄/CdS Heterojunction Nanorods for Highly Efficient Photocatalytic Hydrogen Production under Visible Light Irradiation

Cheng,

Dou,

Yao

et al. 2023

ACS Appl. Nano Mater.

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Photocatalytic hydrogen production has great potential as a way to obtain green and sustainable energy. In this work, MnCo2S4/CdS type-I nanorod heterojunctions were successfully constructed, and the stability of the structure and photocatalytic performance of the composites were significantly improved by the timely transfer of photogenerated holes on the valence band and photogenerated electrons on the conduction band of CdS through the discontinuous MnCo2S4 grown outside the nanorods. The photocatalytic hydrogen production of 5% loaded MnCo2S4/CdS under visible light (λ ≥ 420 nm) can reach 12 mmol·g–1·h–1, which is 42 times more efficient than the hydrogen production of pure CdS nanorods in the presence of Na2S and Na2SO3 as hole scavengers. In addition, the apparent quantum efficiency of the composite catalyst with the best hydrogen evolution activity can reach 11.73%. The construction of type-I semiconductor heterojunctions in this study offers valuable guidance for the preparation of CdS photocatalysts that exhibit superior stability and photocatalytic efficiency.

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“…Optimal heterostructures can prevent recombination of photogenerated carriers and decouple oxidation and reduction. However, typical heterojunctions (i.e., type I , and II , heterojunctions) possess charge transfer defects, limiting their redox ability . Z-scheme heterojunctions can simulate natural photosynthesis; the valence band (VB) of the reduction photocatalyst (RP) is more likely to transfer electrons to the conduction band (CB) of the oxidation photocatalyst (OP) because of the large redox potential difference.…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of Bi₂Sn₂O₇/β-Bi₂O₃ S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

et al. 2023

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Fabrication of S-scheme heterojunctions with enhanced redox capability offers an effective approach to address environmental remediation. In this study, high-performance Bi 2 Sn 2 O 7 /β-Bi 2 O 3 S-scheme heterojunction photocatalysts were fabricated via the in situ growth of Bi 2 Sn 2 O 7 on β-Bi 2 O 3 microspheres. The optimized Bi 2 Sn 2 O 7 /β-Bi 2 O 3 (BSO/BO-0.4) degradation efficiency for tetracycline hydrochloride was 95.5%, which was 2.68-fold higher than that of β-Bi 2 O 3 . This improvement originated from higher photoelectron−hole pair separation efficiency, more exposed active sites, excellent redox capacity, and efficient generation of • O 2 − and • OH. Additionally, Bi 2 Sn 2 O 7 / β-Bi 2 O 3 exhibited good stability against photocatalytic degradation, and the degradation efficiency remained >89.7% after five cycles. The photocatalytic mechanism of Bi 2 Sn 2 O 7 /β-Bi 2 O 3 S-scheme heterojunctions was elucidated. In this study, we design and fabricate high-performance heterojunction photocatalysts for environmental remediation using S-scheme photocatalysts.

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A novel I-type 0D/0D ZnS@Cu3P heterojunction for photocatalytic hydrogen evolution

Cited by 16 publications

References 50 publications

S-Scheme System of MoS2/Co3O4 Nanocomposites for Enhanced Photocatalytic Hydrogen Evolution and Methyl Violet Dye Removal under Visible Light Irradiation

S-Scheme System of MoS2/Co3O4 Nanocomposites for Enhanced Photocatalytic Hydrogen Evolution and Methyl Violet Dye Removal under Visible Light Irradiation

Reverse-Type-I MnCo₂S₄/CdS Heterojunction Nanorods for Highly Efficient Photocatalytic Hydrogen Production under Visible Light Irradiation

Self-Assembly of Bi₂Sn₂O₇/β-Bi₂O₃ S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

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A novel I-type 0D/0D ZnS@Cu3P heterojunction for photocatalytic hydrogen evolution

Cited by 16 publications

References 50 publications

S-Scheme System of MoS2/Co3O4 Nanocomposites for Enhanced Photocatalytic Hydrogen Evolution and Methyl Violet Dye Removal under Visible Light Irradiation

S-Scheme System of MoS2/Co3O4 Nanocomposites for Enhanced Photocatalytic Hydrogen Evolution and Methyl Violet Dye Removal under Visible Light Irradiation

Reverse-Type-I MnCo2S4/CdS Heterojunction Nanorods for Highly Efficient Photocatalytic Hydrogen Production under Visible Light Irradiation

Self-Assembly of Bi2Sn2O7/β-Bi2O3 S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

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Reverse-Type-I MnCo₂S₄/CdS Heterojunction Nanorods for Highly Efficient Photocatalytic Hydrogen Production under Visible Light Irradiation

Self-Assembly of Bi₂Sn₂O₇/β-Bi₂O₃ S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline