Integrating 2D/2D CdS/α-Fe2O3 ultrathin bilayer Z-scheme heterojunction with metallic β-NiS nanosheet-based ohmic-junction for efficient photocatalytic H2 evolution

Shen, Rongchen; Zhang, Liping; Chen, Xingzhu; Jaroniec, Mietek; Li, Neng; Li, Xin

doi:10.1016/j.apcatb.2020.118619

Cited by 224 publications

(131 citation statements)

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“…Subsequently, various noble-metal or non-noble-metal cocatalysts, such as Pt-PdS [173], MoS 2 [166], NiS [174], Ni(OH) 2 [175] and Ni 3 C [176], have been applied in photocatalytic H 2 evolution over CdSbased photocatalysts. Additionally, various CdS-based composite photocatalysts, such as ZnO/CdS [177], CdS/ WO 3 [178], CdS/α-Fe 2 O 3 Z-scheme heterojunction [179], CdS-cluster/graphene [180] and two-dimensional (2D) layered hybrid CdS nanosheets/MoS 2 heterojunctions [66], have also been reported for enhanced photocatalytic H 2 evolution. Despite the significant development, there are only a handful of reviews on CdS-based semiconductor photocatalysts [17,181].…”

Section: Science China Materialsmentioning

confidence: 99%

“…The enhanced activity of the CdS micro-/nanoleaves was partly due to the unique 2D micro-/NS and the exposure of high surface energy facets (0001) [284]. Additionally, constructing a 2D/2D NS coupled with layered composite photocatalysts could further boost charge separation between the CdS nanosheets and the other 2D cocatalysts owing to strongly coupled contact interfaces [179,285,286]. For example, Ma et al [66] successfully synthesized 2D/2D layered hybrid CdS/MoS 2 nanocomposites via a one-step hydrothermal method.…”

Section: Construction Of 2d Nanostructuresmentioning

confidence: 99%

“…They found that the formation of Z-scheme heterostructures between ZnO and CdS could effectively prolong the lifetime of photogenerated e − , reaching a 14-fold improvement in H 2 evolution performance compared with that of pure CdS. Since then, numerous direct Z-scheme CdS-based photocatalysts have been applied in photo-catalytic H 2 generation applications [334], including CdS/ WO 3−x [222], FeC 2 O 4 •2H 2 O/CdS [335], CdS/WO 3 [165,301], CdS/MoO 3−x [336], CdS/g-C 3 N 4 [337,338], CoWO 4 /CdS [44], CdS/Fe 2 O 3 [179], CdS/BiVO 4 [339], TiO 2 /CdS [329,340,341], CdS/CdWO 4 [219,342], ZnO/ CdS [306] and CdS/PI [217]. In our previous study, we reported the fabrication of 2D/2D CdS/g-C 3 N 4 direct Zscheme heterojunction nanocomposites through the insitu growth of 2D CdS NSs on 2D g-C 3 N 4 NSs [338].…”

Section: Direct Z-scheme Heterojunctionmentioning

confidence: 99%

“…Shen et al [179] reported 2D/2D Z-scheme nanocomposites fabricated via the in-situ growth of CdS NSs on α-Fe 2 O 3 NSs (Fig. 19a).…”

Section: Direct Z-scheme Heterojunctionmentioning

confidence: 99%

“…Notably, coupling semiconductors at their active facets are apparently more promising for efficient photogenerated e − transfer. It is expected that CdS-based composites with 2D/2D layered Z-scheme heterojunctions coupled with their active facets can be rationally fabricated for photocatalytic H 2 evolution [179,338].…”

Section: Direct Z-scheme Heterojunctionmentioning

confidence: 99%

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Nanostructured CdS for efficient photocatalytic H2 evolution: A review

et al. 2020

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Cadmium sulfide (CdS)-based photocatalysts have attracted extensive attention owing to their strong visible light absorption, suitable band energy levels, and excellent electronic charge transportation properties. This review focuses on the recent progress related to the design, modification, and construction of CdS-based photocatalysts with excellent photocatalytic H 2 evolution performances. First, the basic concepts and mechanisms of photocatalytic H 2 evolution are briefly introduced. Thereafter, the fundamental properties, important advancements, and bottlenecks of CdS in photocatalytic H 2 generation are presented in detail to provide an overview of the potential of this material. Subsequently, various modification strategies adopted for CdS-based photocatalysts to yield solar H 2 are discussed, among which the effective approaches aim at generating more charge carriers, promoting efficient charge separation, boosting interfacial charge transfer, accelerating charge utilization, and suppressing charge-induced self-photocorrosion. The critical factors governing the performance of the photocatalyst and the feasibility of each modification strategy toward shaping future research directions are comprehensively discussed with examples. Finally, the prospects and challenges encountered in developing nanostructured CdS and CdS-based nanocomposites in photocatalytic H 2 evolution are presented.

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Section: Science China Materialsmentioning

confidence: 99%

Section: Construction Of 2d Nanostructuresmentioning

confidence: 99%

Section: Direct Z-scheme Heterojunctionmentioning

confidence: 99%

“…Shen et al [179] reported 2D/2D Z-scheme nanocomposites fabricated via the in-situ growth of CdS NSs on α-Fe 2 O 3 NSs (Fig. 19a).…”

Section: Direct Z-scheme Heterojunctionmentioning

confidence: 99%

Section: Direct Z-scheme Heterojunctionmentioning

confidence: 99%

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Nanostructured CdS for efficient photocatalytic H2 evolution: A review

et al. 2020

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Photocatalytic Hydrogen Production

Li¹,

Hu²,

Xu³

et al. 2022

Photo‐ and Electro‐Catalytic Processes

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Strained Zero‐Valent Iron for Highly Efficient Heavy Metal Removal

Wei

Liu

et al. 2022

Adv Funct Materials

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Microscale zero-valent iron is one of the most important multifunctional environmental remediation materials, yet its passivated iron oxide shell hampers the transportation of inherent electrons. Herein, the authors exert tensile strain onto mZVI by interstitial boron doping that destabilizes lattice FeFe interactions, thereby liberating the electrons trapped in the iron reservoir. Tensile strain also upshifts the equilibrated Fermi level at the iron/iron oxide Ohmic heterojunction, thus populating the oxide shell with abundant electrons for robust heavy metal sequestration. Strained-mZVI exhibits a 62 times faster Cr(VI) removal rate than its unstrained counterpart and can successfully treat industrial wastewater such as landfill leachate, electroplating, and chromium effluents. The excellent property and exceedingly low cost ($2000 ton −1 ) of strained-mZVI results in its great potential to remediate heavy metal-contaminated water and soil.

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Integrating 2D/2D CdS/α-Fe2O3 ultrathin bilayer Z-scheme heterojunction with metallic β-NiS nanosheet-based ohmic-junction for efficient photocatalytic H2 evolution

Cited by 224 publications

References 69 publications

Nanostructured CdS for efficient photocatalytic H2 evolution: A review

Nanostructured CdS for efficient photocatalytic H2 evolution: A review

Photocatalytic Hydrogen Production

Strained Zero‐Valent Iron for Highly Efficient Heavy Metal Removal

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