Boosting photocatalytic hydrogen evolution: Orbital redistribution of ultrathin ZnIn2S4 nanosheets via atomic defects

Luan, Qingjie; Xue, Xiangdong; Li, Rongjie; Gu, Lin; Dong, Wenjun; Zhou, Dongxue; Wang, Xing; Li, Baozhen; Wang, Ge; Hou, Changmin

doi:10.1016/j.apcatb.2021.121007

Cited by 78 publications

(37 citation statements)

References 52 publications

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“…[ 17 ] In terms of the ZnIn 2 S 4 , the asymmetrical layered structure of [S–In]–[S–In–S]–[Zn–S] unit cell can also offer the opportunity for maneuvering charge kinetics. [ 18 ] However, no efforts have been focused on the polarization‐induced B‐IEF effect in the crystal structure of ZnIn 2 S 4 . Given this situation, it is expected that the engineering of the ZnIn 2 S 4 material by strengthening the polarity intensity in microscopic units can provide a strong driving force to promote the bulk charge separation.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the Polarization Photocatalysis of ZnIn₂S₄ Material toward Hydrogen Evolution by Integrating Cascade Electric Fields with Hole Transfer Vehicle

Wan

Liu

et al. 2022

Adv Funct Materials

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Sluggish charge kinetics in photocatalysts and slow hole transfer in oxidation half-reaction severely limit the photocatalytic activity of hydrogen evolution. ZnIn 2 S 4 with an asymmetrical layered structure of [S-In]-[S-In-S]-[Zn-S] unit cell is a promising material offering asymmetrical crystal polarization to overcome the limitation; however, the polarization-induced internal electric field by this material remains largely unexplored. Herein, the polarization-induced internal electric field of ZnIn 2 S 4 by engineering the polarity intensity in microscopic units is demonstrated for the first time. Specifically, ultrathin ZnIn 2 S 4 nanosheets are employed to establish a Ni 12 P 5 /ZnIn 2 S 4 -O (NP/ZIS-O) system with powerful bulk and interface cascade electric field by the oxygen doping and ohmic junction. Enabled by such a design, the photogenerated electrons can rapidly migrate to NP active sites, suppressing the photogenerated electron-hole pair recombination on ZIS-O. To further overcome the inefficient hole transfer in oxidation half-reaction, the preferential dehydrogenation of the α-CH bond in benzyl alcohol is utilized as a vehicle to facilitate hole transfer.As a result, a remarkably enhanced H 2 generation of 15.79 mmol g -1 h -1 is achieved on NP/ZIS-O, which is 8.16-fold higher than that of pristine ZnIn 2 S 4 . Meanwhile, as a value-added oxidation product, benzaldehyde can be produced at the rate of 17.63 mmol g -1 h -1 . This work presents a collaborative strategy for engineering charge behavior in photocatalysts with polarization features, and provides insights into materials design toward photocatalytic hydrogen production and organic synthesis from the angle of charge kinetics.

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Section: Introductionmentioning

confidence: 99%

“…[17] In terms of the ZnIn 2 S 4 , the asymmetrical layered structure of [S-In]-[S-In-S]-[Zn-S] unit cell can also offer the opportunity for maneuvering charge kinetics. [18] However, no efforts have been focused on the polarization-induced…”

Section: Introductionmentioning

confidence: 99%

Exploring the Polarization Photocatalysis of ZnIn₂S₄ Material toward Hydrogen Evolution by Integrating Cascade Electric Fields with Hole Transfer Vehicle

Wan

Liu

et al. 2022

Adv Funct Materials

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“…For pristine ZIS, the binding energies located at 1044.85 and 1021.75 eV correspond to Zn 2p 1/2 and Zn 2p 3/2 , respectively. 40,41 After coupling with MoC@NG, the binding energies of Zn 2p in MoC@NG-15@ZIS increase to 1044.96 and 1021.84 eV. According to Fig.…”

Section: Resultsmentioning

confidence: 86%

The Mott–Schottky heterojunction MoC@NG@ZIS with enhanced kinetic response for promoting photocatalytic hydrogen production

Tan

Luan

et al. 2022

J. Mater. Chem. A

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“…Zn or S defects promote the directional migration of photogenerated electrons but have little effect on hole regulation. Luan et al, (2022 ) successfully prepared ultra-thin ZnIn 2 S 4 nanosheets with an abundant [InS] 6 intermediate layer and perfect [InS] 4 and [ZnS] 4 surface layer by controlling the crystal growth of ZnIn 2 S 4 with the rapid heating and hydrothermal method. The in vacancy induces the redistribution of orbitals near the maximum value of the valence band, separates the oxidation and reduction sites on both sides of the ultra-thin ZnIn 2 S 4 nanosheet with in vacancy, and increases the density of states between the valence band and the conduction band.…”

Section: Optimization Of Photocatalytic Hydrogen Evolution Performanc...mentioning

confidence: 99%

The Potential Strategies of ZnIn2S4-Based Photocatalysts for the Enhanced Hydrogen Evolution Reaction

et al. 2022

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Photocatalysis is a potential strategy to solve energy and environmental problems. The development of new sustainable photocatalysts is a current topic in the field of photocatalysis. ZnIn2S4, a visible light-responsive photocatalyst, has attracted extensive research interest in recent years. Due to its suitable band gap, strong chemical stability, durability, and easy synthesis, it is expected to become a new hot spot in the field of photocatalysis in the near future. This mini-review presents a comprehensive summary of the modulation strategies to effectively improve the photocatalytic activity of ZnIn2S4 such as morphology and structural engineering, defects engineering, doping engineering, and heterojunction engineering. This review aims to provide reference to the proof-of-concept design of highly active ZnIn2S4-based photocatalysts for the enhanced hydrogen evolution reaction.

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Boosting photocatalytic hydrogen evolution: Orbital redistribution of ultrathin ZnIn2S4 nanosheets via atomic defects

Cited by 78 publications

References 52 publications

Exploring the Polarization Photocatalysis of ZnIn₂S₄ Material toward Hydrogen Evolution by Integrating Cascade Electric Fields with Hole Transfer Vehicle

Exploring the Polarization Photocatalysis of ZnIn₂S₄ Material toward Hydrogen Evolution by Integrating Cascade Electric Fields with Hole Transfer Vehicle

The Mott–Schottky heterojunction MoC@NG@ZIS with enhanced kinetic response for promoting photocatalytic hydrogen production

The Potential Strategies of ZnIn2S4-Based Photocatalysts for the Enhanced Hydrogen Evolution Reaction

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Boosting photocatalytic hydrogen evolution: Orbital redistribution of ultrathin ZnIn2S4 nanosheets via atomic defects

Cited by 78 publications

References 52 publications

Exploring the Polarization Photocatalysis of ZnIn2S4 Material toward Hydrogen Evolution by Integrating Cascade Electric Fields with Hole Transfer Vehicle

Exploring the Polarization Photocatalysis of ZnIn2S4 Material toward Hydrogen Evolution by Integrating Cascade Electric Fields with Hole Transfer Vehicle

The Mott–Schottky heterojunction MoC@NG@ZIS with enhanced kinetic response for promoting photocatalytic hydrogen production

The Potential Strategies of ZnIn2S4-Based Photocatalysts for the Enhanced Hydrogen Evolution Reaction

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Exploring the Polarization Photocatalysis of ZnIn₂S₄ Material toward Hydrogen Evolution by Integrating Cascade Electric Fields with Hole Transfer Vehicle

Exploring the Polarization Photocatalysis of ZnIn₂S₄ Material toward Hydrogen Evolution by Integrating Cascade Electric Fields with Hole Transfer Vehicle