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Simultaneously Effi...
Simultaneously Efficient Solar Light Harvesting and Charge Transfer of Hollow Octahedral Cu2S/CdS p–n Heterostructures for Remarkable Photocatalytic Hydrogen Generation
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Zhang, Y. (author)
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Ran, L. (author)
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Li, Z. (author)
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Zhai, P. (author)
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Zhang, B. (author)
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Fan, Z. (author)
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Wang, C. (author)
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Zhang, X. (author)
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Hou, J. (author)
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- Sun, Licheng, 1962- (author)
- KTH,Organisk kemi,Center of Artificial Photosynthesis for Solar Fuels, School of Science, Westlake University, Hangzhou, 310024, China
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(creator_code:org_t)
- 2021-05-21
- 2021
- English.
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In: Transactions of Tianjin University. - : Springer Nature. - 1006-4982 .- 1995-8196. ; 27:4, s. 348-357
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Abstract
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- Solar-driven water splitting is a promising alternative to industrial hydrogen production. This study reports an elaborate design and synthesis of the integration of cadmium sulfide (CdS) quantum dots and cuprous sulfide (Cu2S) nanosheets as three-dimensional (3D) hollow octahedral Cu2S/CdS p–n heterostructured architectures by a versatile template and one-pot sulfidation strategy. 3D hierarchical hollow nanostructures can strengthen multiple reflections of solar light and provide a large specific surface area and abundant reaction sites for photocatalytic water splitting. Owing to the construction of the p–n heterostructure as an ideal catalytic model with highly matched band alignment at Cu2S/CdS interfaces, the emerging internal electric field can facilitate the space separation and transfer of photoexcited charges between CdS and Cu2S and also enhance charge dynamics and prolong charge lifetimes. Notably, the unique hollow Cu2S/CdS architectures deliver a largely enhanced visible-light-driven hydrogen generation rate of 4.76 mmol/(g·h), which is nearly 8.5 and 476 times larger than that of pristine CdS and Cu2S catalysts, respectively. This work not only paves the way for the rational design and fabrication of hollow photocatalysts but also clarifies the crucial role of unique heterostructure in photocatalysis for solar energy conversion.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Charge separation
- Hollow octahedrons
- Photocatalytic water splitting
- P–n heterostructure
- Cadmium sulfide
- Charge transfer
- Copper compounds
- Electric fields
- Energy conversion
- Hydrogen production
- II-VI semiconductors
- Light
- Semiconductor quantum dots
- Solar energy
- Surface reactions
- Hollow nanostructures
- Hydrogen generations
- Internal electric fields
- Large specific surface areas
- Photocatalytic hydrogen
- Threedimensional (3-d)
- Visible-light-driven
- Sulfur compounds
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Zhang, Y.
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Ran, L.
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Li, Z.
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Zhai, P.
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Zhang, B.
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Fan, Z.
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show more...
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Wang, C.
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Zhang, X.
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Hou, J.
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Sun, Licheng, 19 ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Transactions of ...
- By the university
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Royal Institute of Technology