Recent development on MoS2-based photocatalysis: A review

Li, Zizhen; Meng, Xiangchao

doi:10.1016/j.jphotochemrev.2017.12.002

Cited by 471 publications

(195 citation statements)

References 143 publications

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“…These pioneering works indicated that photocatalysis would be used in many fields in the future, and enormous research attention has been given to similar reactions using TiO 2 as a photocatalyst in the last two decades. In addition to TiO 2 , various new semiconductor materials, such as SrTiO 3 , BiVO 4 , Ag 3 PO 4 , TaON, Ta 3 N 5 , g‐C 3 N 4 , CdS, MoS 2 , and their nanoparticles, have been applied to directly exploit solar energy for various photocatalytic reactions . Due to the rapid increase of heterogeneous photocatalysis use, the literature describing this field has been summarized in numerous reviews, which not only review the development of photocatalysts and the characterization of photocatalytic processes but also point to the challenges and opportunities confronting heterogeneous photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Fundamentals of TiO₂ Photocatalysis: Concepts, Mechanisms, and Challenges

et al. 2019

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Photocatalysis has been widely applied in various areas, such as solar cells, water splitting, and pollutant degradation. Therefore, the photochemical mechanisms and basic principles of photocatalysis, especially TiO2 photocatalysis, have been extensively investigated by various surface science methods in the last decade, aiming to provide important information for TiO2 photocatalysis under real environmental conditions. Recent progress that provides fundamental insights into TiO2 photocatalysis at a molecular level is highlighted. Insights into the structures of TiO2 and the basic principles of TiO2 photocatalysis are discussed first, which provides the basic concepts of TiO2 photocatalysis. Following this, details of the photochemistry of three important molecules (oxygen, water, methanol) on the model TiO2 surfaces are presented, in an attempt to unravel the relationship between charge/energy transfer and bond breaking/forming in TiO2 photocatalysis. Lastly, challenges and opportunities of the mechanistic studies of TiO2 photocatalysis at the molecular level are discussed briefly, as well as possible photocatalysis models.

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Section: Introductionmentioning

confidence: 99%

Fundamentals of TiO₂ Photocatalysis: Concepts, Mechanisms, and Challenges

et al. 2019

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“…10 The proposed theoretical calculations represent the molecular mechanism for these stacking layers that may matter in deciding the net catalytic performance of materials such as graphene and related 2D materials such as MoS 2 , functionalized silicene and germanane, various MXenes (like Zr 2 CO 2 and Hf 2 CO 2 ), single layer group-III monochalcogenides and group-IVB nitride halides, SnS 2 with a tuned photocatalyst under acidic pH conditions, black phosphorene (Pn) with pseudo Jahn-Teller (PJT) effects buckled in a stapler-clip symmetry, black Pn under strain and heterostructures of h-BN/graphene. [11][12][13][14][15][16][17][18][19][20][21][22] The crystal structure of molybdenum disulfide (MoS 2 ) takes the form of a hexagonal plane of S atoms on either side of a hexagonal plane of Mo atoms. These triple planes stack on top of each other, with strong covalent bonds between the Mo and S atoms, but weak van der Waals forces holding the layers together.…”

Section: Introductionmentioning

confidence: 99%

Impact of edge structures on interfacial interactions and efficient visible-light photocatalytic activity of metal–semiconductor hybrid 2D materials

Singh

Panda

Khossossi

et al. 2020

Catal. Sci. Technol.

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The present work systematically investigates the structural, electronic, and optical properties of a MoS 2 / Si 2 BN heterostructure based on first-principles calculations. Firstly, the charge transport and optoelectronic properties of MoS 2 and Si 2 BN heterostructures are computed in detail. We observed that the positions of the valence and conduction band edges of MoS 2 and Si 2 BN change with the Fermi level and form a Schottky contact heterostructure with superior optical absorption spectra. Furthermore, the charge density difference profile and Bader charge analysis indicated that the internal electric field would facilitate the separation of electron-hole (e − /h + ) pairs at the MoS 2 /Si 2 BN interface and restrain the carrier recombination.This work provides an insightful understanding about the physical mechanism for the better photocatalytic performance of this new material system and offers adequate instructions for fabricating superior Si 2 BNbased heterostructure photocatalysts.

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“…1,2 2D transition metal dichalcogenides, in contrast with the pristine form of graphene, 3 possess a direct bandgap 4 which is benecial for application in photodetectors, photovoltaics and photocatalysis. [5][6][7] Among others, molybdenum disulde (MoS 2 ) has attracted intense attention due to its direct bandgap around 1.8-1.9 eV in the visible (VIS) light range. 4 On the other hand, the low light absorption cross section of MoS 2 due to its atomic thickness makes improving the photoluminescence (PL) emission efficiency a great challenge.…”

Section: Introductionmentioning

confidence: 99%