Polar semiconductor photocatalysts with intrinsic electric fields for selective organic transformation

Huang, Mianli; Yu, Maoqing; Si, Ruiru; Xu, Wentao; Xu, Miaoqiong; Xiao, Chunmei; Chen, Wenjie; Sun, Lidan; Weng, Bo; Pan, Xiaoyang

doi:10.1039/d2nj04889b

Cited by 4 publications

(1 citation statement)

References 154 publications

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“…Researchers are greatly interested in CdS photocatalysts for H 2 generation due to their narrower bandgap (approximately 2.4 eV), which enables visible light response and sufficiently negative potential of the conduction band edge for proton reduction [3]. However, CdS photocatalysts often exhibit unsatisfactory photocatalytic performance due to faster charge recombination and photocorrosion [4].…”

Section: Introductionmentioning

confidence: 99%

Tailoring Morphology in Hydrothermally Synthesized CdS/ZnS Nanocomposites for Extraordinary Photocatalytic H2 Generation via Type-II Heterojunction

Huang

et al. 2023

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CdS@ZnS core shell nanocomposites were prepared by a one-pot hydrothermal route. The morphology of the composite was tuned by simply changing the Zn2+ precursor concentration. To characterize the samples prepared, various techniques were employed, including XRD, FESEM, TEM, XPS and UV-vis DRS. The band gaps of CdS and ZnS were measured to be 2.26 and 3.32 eV, respectively. Compared with pure CdS, the CdS@ZnS samples exhibited a slight blue shift, which indicated an increased band gap of 2.29 eV. The CdS@ZnS core shell composites exhibited efficient photocatalytic performance for H2 generation under simulated sunlight illumination in contrast to pure CdS and ZnS. Additionally, an optimized H2 generation rate (14.44 mmol·h−1·g−1cat) was acquired at CdS@ZnS-2, which was approximately 4.6 times greater than that of pure CdS (3.12 mmol·h−1·g−1cat). Moreover, CdS@ZnS heterojunction also showed good photocatalytic stability. The process of charge separation over the photocatalysts was investigated using photoelectrochemical analysis. The findings indicate that the CdS@ZnS nanocomposite has efficient charge separation efficiency. The higher H2 generation activity and stability for CdS@ZnS photocatalysts can be attributed to the intimate interface in the CdS@ZnS core–shell structure, which promoted the light absorption intensity and photoinduced charge separation efficiency. It is expected that this study will offer valuable insights into the development of efficient core shell composite photocatalysts.

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Section: Introductionmentioning

confidence: 99%

Tailoring Morphology in Hydrothermally Synthesized CdS/ZnS Nanocomposites for Extraordinary Photocatalytic H2 Generation via Type-II Heterojunction

Huang

et al. 2023

Catalysts

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Mixed cation ordering scaffold polar 2D halide perovskite semiconductor for self-powered polarization-sensitive photodetection

Wang,

Li,

Zhang

et al. 2024

Chinese Chemical Letters

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Hydrogen production coupled with benzyl alcohol oxidation promoted by PtO-CdS hollow microsphere photocatalysts

Wang,

Huang,

et al. 2024

Materials Letters

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Polar semiconductor photocatalysts with intrinsic electric fields for selective organic transformation

Abstract: Semiconductor photocatalysts have been widely investigated in the field of selective organic transformation. However, the practical application of photocatalysts is greatly limited due to the low charge separation efficiency. Recently,...

Cited by 4 publications

References 154 publications

Tailoring Morphology in Hydrothermally Synthesized CdS/ZnS Nanocomposites for Extraordinary Photocatalytic H2 Generation via Type-II Heterojunction

Tailoring Morphology in Hydrothermally Synthesized CdS/ZnS Nanocomposites for Extraordinary Photocatalytic H2 Generation via Type-II Heterojunction

Mixed cation ordering scaffold polar 2D halide perovskite semiconductor for self-powered polarization-sensitive photodetection

Hydrogen production coupled with benzyl alcohol oxidation promoted by PtO-CdS hollow microsphere photocatalysts

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