MoS2/Ti3C2 heterostructure for efficient visible-light photocatalytic hydrogen generation

Zhang, Juhui; Xing, Chao; Shi, Feng

doi:10.1016/j.ijhydene.2019.12.109

Cited by 70 publications

(27 citation statements)

References 40 publications

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“…[92,111,126,127] MXenes can serve as an electron reservoir to promote the separation of charge carriers in many semiconductors, such as CdS, g-C 3 N 4 , Mo 2 S, TiO 2 , Zn 2 In 2 S 5 , ZnIn 2 S 4 , BiOBr, and Ag 3 PO 4 (Table 3). [85,87,90,94,105,115,128] The DFT calculation on a typical TiO 2 photocatalyst shows that the jΔG H Ã j of intermediated state H* is 0.00283 eV when using O-terminated Ti 3 C 2 MXene as the cocatalysts, much lower than that of those frequently used cocatalysts in water splitting reactions, such as Pt (0.09 eV), MoS 2 (0.08 eV), and WS 2 (0.22 eV). [98] Therefore, MXenes could be better cocatalysts from an energy point of view.…”

Section: Photocatalytic Water Splittingmentioning

confidence: 97%

Advances and Promises of 2D MXenes as Cocatalysts for Artificial Photosynthesis

et al. 2021

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Section: Photocatalytic Water Splittingmentioning

confidence: 97%

Advances and Promises of 2D MXenes as Cocatalysts for Artificial Photosynthesis

et al. 2021

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“…The decrease in H 2 rate with excessive Ti 3 C 2 loading of above 25% may be due to developing charge recombination centers, thus the photocatalytic activity decreased. Previously, a MoS 2 /Ti 3 C 2 composite was investigated and 30% Ti 3 C 2 was observed to be as the optimized loading amount to increase H 2 yield, which is 2.3 times higher than what was produced over pure MoS 2 . In another development, 1D CdS nanorods coupled with 2D Ti 3 C 2 MXene nanosheets were obtained to provide an accelerated separation of charge carriers .…”

Section: Resultsmentioning

confidence: 99%

“…Previously, a MoS 2 /Ti 3 C 2 composite was investigated and 30% Ti 3 C 2 was observed to be as the optimized loading amount to increase H 2 yield, which is 2.3 times higher than what was produced over pure MoS 2 . 51 In another development, 1D CdS nanorods coupled with 3 C 2 MXene nanosheets were obtained to provide an accelerated separation of charge carriers. 44 All these findings confirm Ti 3 C 2 to be a promising cocatalyst that can be attached TiO 2 to the hydrogen rate.…”

Section: Resultsmentioning

confidence: 99%

Binary Ni₂P/Ti₃C₂ Multilayer Cocatalyst Anchored TiO₂ Nanocomposite with Etchant/Oxidation Grown TiO₂ NPs for Enhancing Photocatalytic H₂ Production

Tahir

2021

Energy Fuels

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Ternary nickel phosphide (Ni2P) and titanium carbide (Ti2C2) MXene supported titanium dioxide nanoparticles (TiO2 NPs) to construct a Ni2P/TiO2 NPs/Ti3C2 MXene hybrid composite for stimulating photocatalytic hydrogen production has been investigated. The performance comparison of two-dimensional (2D) Ti3C2 MXene multilayers with in situ grown TiO2 NPs synthesized through etching and atmospheric calcination methods was conducted and promising separation of charge carriers was observed. TiO2 NPs embedded over 2D Ti3C2, synthesized through both methods, were found to have promise in promoting photoactivity, whereas 2.89 times more H2 yield was attained with TiO2 NPs embedded through the oxidation (ox) approach. Using the Ni2P/TiO2/Ti3C2-ox heterostructure, a rate of 9425 ppm g–1 h–1 of H2 was reached, 2.77, 4.81, and 8.28 times more than those using Ni2P/TiO2, TiO2/Ti3C2 and TiO2 samples, respectively. This obviously augmented H2 production rate can be ascribed to a binary cocatalyst with efficient charge carrier separation, higher light absorption, and more attachment of water molecules. Among different alcohols, glycerol was a promising reagent to yield more hydrogen in addition to having higher photostability in consecutive cycles. This study provides a new approach to construct a ternary nanocomposite with proficient charge carrier separation and would be beneficial for other energy applications.

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“…Zhang et al 50 prepared MoS 2 /Ti 3 C 2 catalysts with unique spherical/flake structure by hydrothermal method. The maximum hydrogen production of 30% Ti 3 C 2 loaded MoS 2 /Ti 3 C 2 heterostructure was 6144.7 mmol g -1 h -1 , which was 2.3 times that of pure MoS 2 .…”

Section: Application Of Mxenes Materials In Photocatalysis 1 Photocatalytic Hydrogen Production By Mxenes Materialsmentioning

confidence: 99%

Progress in photocatalysis of new two-dimensional layered materials Mxenes

Kai¹,

ZHANG²,

KONG³

et al. 2021

Rev.Roum.Chim.

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As an extremely promising new class of materials, MXenes (two-dimensional layered materials) have attracted much interest and become a research hotspot in many fields. Owing to the typical layered structure, excellent electronic performance, it can be used as co-catalysts to recombine other photocatalytic materials to enhance the separation of photo-generated charges, inhibit the rapid recombination of charges, and finally convert solar energy into chemical energy. MXenes, which exhibit extraordinary catalytic activity in photocatalytic reactions, are increasingly being widely used as co-catalysts. This article summarizes and discusses two photocatalytic reactions with MXenes as co-catalysts, the dehydrogenation reaction (HER) and the CO2 reduction reaction (CO2RR), as well as their physical and chemical properties, preparation and synthesis methods, and the latest research progress. Summarized related applications and photocatalysis principles. Finally, the prospects and expectations of MXenes in photocatalytic applications are presented.

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MoS2/Ti3C2 heterostructure for efficient visible-light photocatalytic hydrogen generation

Cited by 70 publications

References 40 publications

Advances and Promises of 2D MXenes as Cocatalysts for Artificial Photosynthesis

Advances and Promises of 2D MXenes as Cocatalysts for Artificial Photosynthesis

Binary Ni₂P/Ti₃C₂ Multilayer Cocatalyst Anchored TiO₂ Nanocomposite with Etchant/Oxidation Grown TiO₂ NPs for Enhancing Photocatalytic H₂ Production

Progress in photocatalysis of new two-dimensional layered materials Mxenes

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MoS2/Ti3C2 heterostructure for efficient visible-light photocatalytic hydrogen generation

Cited by 70 publications

References 40 publications

Advances and Promises of 2D MXenes as Cocatalysts for Artificial Photosynthesis

Advances and Promises of 2D MXenes as Cocatalysts for Artificial Photosynthesis

Binary Ni2P/Ti3C2 Multilayer Cocatalyst Anchored TiO2 Nanocomposite with Etchant/Oxidation Grown TiO2 NPs for Enhancing Photocatalytic H2 Production

Progress in photocatalysis of new two-dimensional layered materials Mxenes

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Binary Ni₂P/Ti₃C₂ Multilayer Cocatalyst Anchored TiO₂ Nanocomposite with Etchant/Oxidation Grown TiO₂ NPs for Enhancing Photocatalytic H₂ Production