Gemstone nanoflower-shaped ZnIn2S4/CuS heterojunction with ultralong lifetime of photoinduced carriers for photocatalytic hydrogen evolution

Yu, Ziqi; Luan, Xue; Xiao, Han; Yang, Yupeng; Luo, Di; Zi, Jiangzhi; Lian, Zichao

doi:10.1016/j.apcatb.2024.123702

Applied Catalysis B: Environment and Energy

2024

DOI: 10.1016/j.apcatb.2024.123702

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Gemstone nanoflower-shaped ZnIn2S4/CuS heterojunction with ultralong lifetime of photoinduced carriers for photocatalytic hydrogen evolution

Ziqi Yu,

Xue Luan,

Han Xiao

et al.

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Cited by 8 publications

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Direct Observation of Z‐Scheme Route in Cu₃₁S₁₆/Zn_xCd_1‐xS Heteronanoplates for Highly Efficient Photocatalytic Hydrogen Evolution

Lian,

Qu,

Xiao

et al. 2024

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Although photocatalytic hydrogen production from water holds great potential as a renewable and sustainable energy alternative, the practical application of the technology demands cost‐effective, simple photocatalytic systems with high efficiency in hydrogen evolution reaction (HER). Herein, the synthesis and characterization of Cu31S16/ZnxCd1‐xS heterostructured nanoplates (Cu31S16/ZnCdS HNPs) as a high photocatalytic system are reported. The cost‐effective, hierarchical structures are easily prepared using the Cu31S16 NPs as the seed by the epitaxial growth of the ZnCdS nanocrystals (NCs). The Cu31S16/ZnCdS without the noble metal cocatalyst exhibits a high HER rate of 61.7 mmol g−1 h−1, which is 8,014 and 17 times higher than that of Cu31S16 and ZnCdS, respectively, under visible light irradiation. The apparent quantum yield (AQY) of Cu31S16/ZnCdS reaches 67.9% at 400 nm with the highest value so far in the reported ZnCdS‐based photocatalysts. The excellent activity and stability of the Cu31S16/ZnCdS are attributed to the formation of a strong internal electric field (IEF) and the Z‐scheme pathway. The comprehensive experiments and theoretical calculations provide the direct evidences of the Z‐scheme route. This work may offer a way for the design and development of efficient photocatalysts to achieve solar‐to‐chemical energy conversion at a practically useful level.

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Direct Observation of Z‐Scheme Route in Cu₃₁S₁₆/Zn_xCd_1‐xS Heteronanoplates for Highly Efficient Photocatalytic Hydrogen Evolution

Lian,

Qu,

Xiao

et al. 2024

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Defect Engineering in CuS_1‐_x Nanoflowers Enables Low‐Overpotential and Long‐Cycle‐Life of Lithium‐Oxygen Batteries

Feng,

Abbas,

Zhao

et al. 2024

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The defect engineering is essential for the development of efficient cathode catalysts for lithium‐oxygen batteries. Herein, CuS1‐x nanoflowers are fabricated by microwave hydrothermal method. Through theoretical and experimental analysis, the S vacancies are observed, which result in augmented charge around Cu, improved adsorption of LiO2, and reduced overpotential. On the one hand, the generated electronic defects cause the Fermi level to shift toward the conduction band, which enhances the electronic conductivity and ion transfer. On the other hand, the increased S vacancies provide a large number of Cu active sites, which increase the charge transfer from Cu to LiO2, which improves the stability of the intermediate adsorption. Interactively, CuS1‐x catalyst obtains a capacity of 23,227 mAh g−1 and a cycle life of 225 at 500 mA g−1. This work will be helpful for obtaining an efficient cathode catalyst by providing a deep understanding of vacancy modulation in advanced catalysts.

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Efficient photocatalytic H2 evolution over CuCo2S4 decorated ZnIn2S4 with S-scheme charge separation way

Xiao,

Tian,

Miao

et al. 2024

International Journal of Hydrogen Energy

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Gemstone nanoflower-shaped ZnIn2S4/CuS heterojunction with ultralong lifetime of photoinduced carriers for photocatalytic hydrogen evolution

Cited by 8 publications

References 55 publications

Direct Observation of Z‐Scheme Route in Cu₃₁S₁₆/Zn_xCd_1‐xS Heteronanoplates for Highly Efficient Photocatalytic Hydrogen Evolution

Direct Observation of Z‐Scheme Route in Cu₃₁S₁₆/Zn_xCd_1‐xS Heteronanoplates for Highly Efficient Photocatalytic Hydrogen Evolution

Defect Engineering in CuS_1‐_x Nanoflowers Enables Low‐Overpotential and Long‐Cycle‐Life of Lithium‐Oxygen Batteries

Efficient photocatalytic H2 evolution over CuCo2S4 decorated ZnIn2S4 with S-scheme charge separation way

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Gemstone nanoflower-shaped ZnIn2S4/CuS heterojunction with ultralong lifetime of photoinduced carriers for photocatalytic hydrogen evolution

Cited by 8 publications

References 55 publications

Direct Observation of Z‐Scheme Route in Cu31S16/ZnxCd1‐xS Heteronanoplates for Highly Efficient Photocatalytic Hydrogen Evolution

Direct Observation of Z‐Scheme Route in Cu31S16/ZnxCd1‐xS Heteronanoplates for Highly Efficient Photocatalytic Hydrogen Evolution

Defect Engineering in CuS1‐x Nanoflowers Enables Low‐Overpotential and Long‐Cycle‐Life of Lithium‐Oxygen Batteries

Efficient photocatalytic H2 evolution over CuCo2S4 decorated ZnIn2S4 with S-scheme charge separation way

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Product

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About

Direct Observation of Z‐Scheme Route in Cu₃₁S₁₆/Zn_xCd_1‐xS Heteronanoplates for Highly Efficient Photocatalytic Hydrogen Evolution

Direct Observation of Z‐Scheme Route in Cu₃₁S₁₆/Zn_xCd_1‐xS Heteronanoplates for Highly Efficient Photocatalytic Hydrogen Evolution

Defect Engineering in CuS_1‐_x Nanoflowers Enables Low‐Overpotential and Long‐Cycle‐Life of Lithium‐Oxygen Batteries