论文成果
Interfacial chemical bond and internal electric field modulated Z-scheme S-v-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution
- 发布时间：2024-01-19
- 点击次数：
- 关键字：ZNIN2S4 MONOLAYER; HETEROJUNCTION; VACANCIES
- 摘要：Construction of Z-scheme heterostructure is of great significance for realizing efficient photocatalytic water splitting. However, the conscious modulation of Z-scheme charge transfer is still a great challenge. Herein, interfacial Mo-S bond and internal electric field modulated Z-scheme heterostructure composed by sulfur vacancies-rich ZnIn2S4 and MoSe2 was rationally fabricated for efficient photocatalytic hydrogen evolution. Systematic investigations reveal that Mo-S bond and internal electric field induce the Z-scheme charge transfer mechanism as confirmed by the surface photovoltage spectra, DMPO spin-trapping electron paramagnetic resonance spectra and density functional theory calculations. Under the intense synergy among the Mo-S bond, internal electric field and S-vacancies, the optimized photocatalyst exhibits high hydrogen evolution rate of 63.21mmol.g(-1)h(-1) with an apparent quantum yield of 76.48% at 420nm monochromatic light, which is about 18.8-fold of the pristine ZIS. This work affords a useful inspiration on consciously modulating Z-scheme charge transfer by atomic-level interface control and internal electric field to signally promote the photocatalytic performance. The construction of Z-scheme heterostructures is of great significance for realizing efficient photocatalytic water splitting. Here, the authors report an interfacial chemical bond and internal electric field modulated Z-Scheme S-v-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution.
- 卷号：12
- 期号：1
- 是否译文：否
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