Three-dimensional MoS 2 /reduced graphene oxide aerogel as a macroscopic visible-light photocatalyst

Zhang, Ruiyang; Wan, Wenchao; Li, Dawei; Dong, Fan; Zhou, Ying

doi:10.1016/s1872-2067(16)62568-8

Cited by 76 publications

(27 citation statements)

References 41 publications

(46 reference statements)

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“…Moreover, MoS 2 is also considered as an alternative cocatalyst to Pt because of its low cost and negative CB position (−0.1 eV) that allows transferring of electrons from the conjoined semiconductor to MoS 2 and therefore enhances the electrical conductivity. [ 184,185 ] For example, Huang et al [ 186 ] combined MoS 2 (M) with GO (G) to form a 3D hierarchical hydrogel architecture, which served as a fruitful cocatalyst coupled with the multinary metal sulfide CuInZnS (CIZS) ( Figure 32 a,b). When CIZS coupled with 1 wt% MG (the content ratio of M/G is 90% in the 1 wt% MG), the CIZS/M90G10 composite showed a highest photocatalytic HER activity of 827 µmol h −1 g −1 , which is about 1.9 and 29 times higher than that of the M90G10 and pure CIZS (Figure 32c), respectively.…”

Section: D Graphene‐based Composites For Photocatalytic Hermentioning

confidence: 99%

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Kuang

Sayed

Fan

et al. 2020

Advanced Energy Materials

238

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Hydrogen (H2) has been deemed as the most promising and valuable alternative to nonrenewable fossil fuels. Photocatalytic and electrocatalytic water splitting are considered to be the most efficient and environmentally friendly approaches for the sustainable H2 evolution reaction (HER). Graphene with a 3D framework has been utilized for the HER due to its unique structure and properties, including its hierarchical network, large specific surface area, diverse pore distribution, outstanding light absorption ability, and excellent electrical conductivity. The large specific surface area and hierarchically porous structure of 3D graphene can not only maximize the exposure of active sites but also promote electron transfer and gas product diffusion. In addition, the free‐standing 3D graphene monolith is easily recycled compared with powder phase support, which can prevent the loss of active catalysts. By making full use of the aforementioned merits, 3D graphene‐based composite materials show great promise as high‐performance catalysts toward photocatalytic and electrocatalytic HER. In this review, recent advances in fabricating 3D graphene‐based composite materials and their applications in both photocatalytic and electrocatalytic HER are summarized and discussed. Furthermore, the current challenges and future vision associated with the design, fabrication, and integration of 3D graphene‐based composite materials toward HER are put forward.

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Section: D Graphene‐based Composites For Photocatalytic Hermentioning

confidence: 99%

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Kuang

Sayed

Fan

et al. 2020

Advanced Energy Materials

238

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“…Physical properties of materials are pivotal to their practical application. As shown in Figure 1B , the monolithic g-C 3 N 4 /MS has an ultra-low density (11.5 mg cm −3 ), which can stay on dog tail grass and remarkably lighter than that of reported BiOBr/reduced GOA (50 mg cm −3 ) (Liu W. J. et al, 2015 ), TiO 2 /graphene aerogel (19 mg cm −3 ) (Qiu et al, 2014 ), and MoS 2 /reduced GOA (56.1 mg cm −3 ) (Zhang R. Y. et al, 2017 ). Moreover, SSA of g-C 3 N 4 /MS (7.6 m 2 g −1 ) is much more larger than that of the pristine g-C 3 N 4 (0.9 m 2 g −1 ), which not only offer more active sites but also have larger absorption capacity than its powdery counterpart.…”

Section: Resultsmentioning

confidence: 89%

Compressible and Recyclable Monolithic g-C3N4/Melamine Sponge: A Facile Ultrasonic-Coating Approach and Enhanced Visible-Light Photocatalytic Activity

Yang

Zhang

et al. 2018

Front. Chem.

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Powdery photocatalysts seriously restrict their practical application due to the difficult recycle and low photocatalytic activity. In this work, a monolithic g-C3N4/melamine sponge (g-C3N4/MS) was successfully fabricated by a cost-effective ultrasonic-coating route, which is easy to achieve the uniform dispersion and firm loading of g-C3N4 on MS skeleton. The monolithic g-C3N4/MS entirely inherits the porous structure of MS and results in a larger specific surface area (SSA) than its powdery counterpart. Benefit from this monolithic structure, g-C3N4/MS gains more exposed active sites, enhanced visible-light absorption and separation of photogenerated carriers, thus achieving noticeable photocatalytic activity on nitric oxide (NO) removal and CO2 reduction. Specifically, NO removal ratio is as high as 78.6% which is 4.5 times higher than that of the powdery g-C3N4, and yield rate of CO and CH4 attains 7.48 and 3.93 μmol g−1 h−1. Importantly, the features of low-density, high porosity, good elasticity, and firmness, not only endow g-C3N4/MS with flexibility in various environmental applications, but also make it easy to recycle and stable for long-time application. Our work provides a feasible approach to fabricate novel monolithic photocatalysts with large-scale production and application.

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“… Catalysts Light source Light intensity (mW/cm 2 ) Catalyst concentration (g/L) Stirring Decolourization rate k (min -1 ) Recycling times Refs. C fiber@MoSe 2 NPCSC 5 W LED lamp 36 1 no 34.7% in 120 min 0.0034 3 [1] C quantum dots decorated MoSe 2 300 W Xe lamp λ ≥ 400 nm 741 1 yes 99% in 180 min 0.026 3 [9] Hexagonal 2H-MoSe 2 nanoparticles 300 W Xe lamp λ ≥ 400 nm 741 1 yes 94% in 180 min 0.027 3 [10] MoSe 2 nanosheets/TiO 2 nanoparticles composite 400 W metal halogen lamp λ ≥ 400 nm – 1 yes 91% in 120 min 0.0141 – [11] MoSe 2 nanoparticles 400 W metal halogen lamp λ ≥ 400 nm – 1 yes 95% in 250 min – 5 [12] 3D MoS 2 /r-GO aerogel 300 W Xe lamp 545 0.67 yes 92% in 120 min – – [13] 2D MoS 2 nanosheet coated Bi 2 S 3 discoids 300 W Xe lamp λ ≥ 400 nm 700 0.25 yes 97% in 30 min – 3 [14] …”

Section: Datamentioning

confidence: 99%

Data on novel C fibers@MoSe2 nanoplates core–shell composite for highly efficient solar-driven photocatalytically degrading environmental pollutants

et al. 2018

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The data presented in this article are related to a research article entitled ‘Highly efficient solar-driven photocatalytic degradation on environmental pollutants over a novel C fibers@MoSe2 nanoplates core–shell composite’ (Wang et al., 2018) [1]. In this article, we report original data on the synthesis processes optimization of the proposed composite together with its formation mechanism. The report includes the composition, microstructure and morphology of the corresponding samples, and the photocatalytic activity and stability of the optimal composite. Compared with commercially available MoSe2 powder, the reaction rate constant of the optimal composite catalyst for the degradation of methylene blue (MB) and rhodamine B (RhB) under simulated sunlight irradiation (SSI) could be increased in a factor of about 14 and 8, respectively. The data are presented in this format to allow the comparison with those from other researchers in this field, and understanding the synthesis and photocatalysis mechanism of similar catalysts.

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Three-dimensional MoS 2 /reduced graphene oxide aerogel as a macroscopic visible-light photocatalyst

Cited by 76 publications

References 41 publications

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Compressible and Recyclable Monolithic g-C3N4/Melamine Sponge: A Facile Ultrasonic-Coating Approach and Enhanced Visible-Light Photocatalytic Activity

Data on novel C fibers@MoSe2 nanoplates core–shell composite for highly efficient solar-driven photocatalytically degrading environmental pollutants

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Three-dimensional MoS 2 /reduced graphene oxide aerogel as a macroscopic visible-light photocatalyst

Cited by 76 publications

References 41 publications

3D Graphene‐Based H2‐Production Photocatalyst and Electrocatalyst

3D Graphene‐Based H2‐Production Photocatalyst and Electrocatalyst

Compressible and Recyclable Monolithic g-C3N4/Melamine Sponge: A Facile Ultrasonic-Coating Approach and Enhanced Visible-Light Photocatalytic Activity

Data on novel C fibers@MoSe2 nanoplates core–shell composite for highly efficient solar-driven photocatalytically degrading environmental pollutants

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Product

Resources

About

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst