In-situ hydrogenation engineering of ZnIn2S4 for promoted visible-light water splitting

Zhu, Yi; Wang, Longlu; Liu, Yutang; Shao, Lang; Xia, Xinnian

doi:10.1016/j.apcatb.2018.09.062

Cited by 120 publications

(47 citation statements)

References 48 publications

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“…However, the Raman bands in M 0.2 ‐ZIS assigned to LO 1 , TO 2 , LO 2 , and A 1g shift to 261, 303, 347, and 387 cm −1 , and all the peaks are comparatively weaker, indicating a decreasing crystalline symmetry compared with that of pristine ZIS [21g]. While for M 3 ‐ZIS the peaks at 257 cm −1 disappear, and the peaks at 304, 350, and 387 cm −1 can hardly be observed, which may be due to the doping effect and poor crystallinity …”

Section: Resultsmentioning

confidence: 94%

“…Figure S7, Supporting Information, shows Raman spectra of ZIS and M x ‐ZIS. For ZIS, four Raman peaks around 257, 305, 343, and 379 cm −1 are attributed to the longitudinal optical mode (LO 1 ), transverse optical mode (TO 2 ), longitudinal optical mode (LO 2 ), and A 1g mode of crystalline ZIS, respectively . However, the Raman bands in M 0.2 ‐ZIS assigned to LO 1 , TO 2 , LO 2 , and A 1g shift to 261, 303, 347, and 387 cm −1 , and all the peaks are comparatively weaker, indicating a decreasing crystalline symmetry compared with that of pristine ZIS [21g].…”

Section: Resultsmentioning

confidence: 96%

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Mo‐Doped ZnIn₂S₄ Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution

2019

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Designing robust visible light‐driven photocatalysts in terms of the structure and component is an important way for achieving efficient solar hydrogen production. Herein, Mo‐doped ZnIn2S4 (M‐ZIS) flower‐like hollow microspheres assembled by ultrathin nanosheets are reported. The as‐prepared M‐ZIS samples achieve an enhanced H2 generation rate of 4.62 mmol g−1 h−1 under visible light, ten times higher than that of pristine ZIS. The 3D hollow microspheres structure assembled by nanosheets ensures sufficient light harvesting and exposure of more active sites. Meanwhile, the doping of Mo is propitious to regulate the chemical characteristic and electronic structure of ZIS in the merit of ameliorated hydrophilicity, extended light adsorption, accelerated transfer‐separation efficiency of charge carriers, as well as the reduced overpotential of H2 evolution. This model is put forward to obtain an in‐depth understanding of the role that both the 3D hollow hierarchical structure and doping atoms play in photocatalytic water splitting.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 96%

Mo‐Doped ZnIn₂S₄ Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution

2019

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“…The defects could be introduced into the semiconductors by plasma etching as a promising strategy . For example, as‐synthesized In 2 O 3− x /In 2 S 3 layers with OVs were fabricated by plasma treatment (Figure ).…”

Section: Strategies For Defects Generationmentioning

confidence: 99%

“…Oxygen‐ vacancies‐confined in TiO 2 crystals were produced through Ar plasma etching strategy, enhancing charge separation and promoting PC performance of water splitting . Moreover, the defects could also be introduced into the nanomaterials through a liquid‐ammonia‐assisted lithiation strategy . For example, sulfur‐vacancies‐confined in ZnIn 2 S 4 (V s ‐ZnIn 2 S 4 ) nanosheets were fabricated through a lithiation‐chemistry approach (Figure ), manipulating the electronic structure and the PC performance of defective ZnIn 2 S 4 nanosheets.…”

Section: Strategies For Defects Generationmentioning

confidence: 99%

“…To promote the charge separation of ZnIn 2 S 4 , the high PC hydrogen generation rates, 6.884 and 11.9 mmol g −1 h −1 , were achieved using as‐synthesized hybrids of MoS 2 quantum dots/V s ‐ZnIn 2 S 4 and Z‐scheme NiS/WO 3 /V s ‐ZnIn 2 S 4 heterostructures due to the introduction of the defect and the construction of the heterostructure . Meanwhile, hydrogenated ZnIn 2 S 4 with the defects using UV irradiation presented the wide spectrum responsive photocatalysis . Surface OVs on TiO 2 photoelectrodes using atomic layer deposition promoted the performance of PEC N 2 fixation to ammonia .…”

Section: Strategies For Defects Generationmentioning

confidence: 99%

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Defect Engineering of Photocatalysts for Solar Energy Conversion

et al. 2020

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Solar energy conversion is one of the most versatile approaches for sustainable energy demands. The fundamental limitations for photocatalysis remain light absorption, charge separation, and photocatalytic (PC) performance of the catalysts. For the past few decades, defect engineering has been proven to be a promising solution for converting solar energy to chemical energy. In this regard, the recent progress of defect engineering toward solar energy conversion is summarized. Beginning with defects classification, the definition of various defects, synthesized strategies, and characterization techniques of controllable material defects are presented. The role of defect engineering on solar energy conversion is developed, extending light absorption, promoting charge separation, and facilitating stable PC reaction. The achievement of the defective photocatalysts is discussed toward versatile applications such as solar water splitting, CO2 reduction, nitrogen fixation, molecular activation, pollutants degradation, and solar cells. Finally, this Review, with regards to defect engineering, ends with the future opportunities and challenges for this exciting and emerging area for solar energy conversion.

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Thin‐Layered Photocatalysts

Sun

Huang

Zhao

et al. 2020

Adv Funct Materials

141

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Semiconductor photocatalysis, a green and sustainable technology, is of great significance for solving environmental pollution and energy shortages. However, the common problems of inefficient light harvesting, rapid recombination of electron-hole pairs, and low surface reactive reaction sites for photocatalysts urgently need to be solved. In this regard, thin-layered photocatalysts are considered to be one of the most promising candidates for addressing these issues, due to their unique surface and electronic properties. In this review, the various strategies for constructing thin-layered photocatalysts are summarized, and emphasis is given to approaches for optimizing the photocatalytic performance of the thin-layered materials, which can be classified into surface engineering and junction construction. In addition, the photocatalytic applications of thin-layered materials, i.e., water splitting, CO 2 reduction, nitrogen fixation, and molecule oxygen activation, are summarized. Finally, based on current achievements in thin-layered photocatalysts, their future development and challenges are discussed.

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In-situ hydrogenation engineering of ZnIn2S4 for promoted visible-light water splitting

Cited by 120 publications

References 48 publications

Mo‐Doped ZnIn₂S₄ Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution

Mo‐Doped ZnIn₂S₄ Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution

Defect Engineering of Photocatalysts for Solar Energy Conversion

Thin‐Layered Photocatalysts

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In-situ hydrogenation engineering of ZnIn2S4 for promoted visible-light water splitting

Cited by 120 publications

References 48 publications

Mo‐Doped ZnIn2S4 Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution

Mo‐Doped ZnIn2S4 Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution

Defect Engineering of Photocatalysts for Solar Energy Conversion

Thin‐Layered Photocatalysts

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Product

Resources

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Mo‐Doped ZnIn₂S₄ Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution

Mo‐Doped ZnIn₂S₄ Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution