The 2D Porous g-C<sub>3</sub>N<sub>4</sub>/CdS Heterostructural Nanocomposites with Enhanced Visible-Light-Driven Photocatalytic Activity

Zhao, Yanfei; Sun, Yuping; Yin, Xiu; Chen, Ran; Yin, Guangchao; Sun, Meiling; Jia, Fuchao; Liu, Bo

doi:10.1166/jnn.2020.16984

Cited by 12 publications

(5 citation statements)

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“…Due to the electric field and the bending of the band edge, the electrons in the CS-D conduction band and the holes in the PCN valence band recombine with each other, and the electrons in the conduction band of PCN and the holes in the CS-D will be effectively separated [61][62][63]. The S-scheme heterojunction mechanism will enable the 2D/2D PCN/CS-D nanocomposite to have extremely high redox capabilities and provide a strong driving force for the photocatalytic water-splitting reaction [64][65][66].…”

Section: Resultsmentioning

confidence: 99%

Microwave-assisted synthesis of organic–inorganic hybrid porous g-C₃N₄/CdS–diethylenetriamine S-scheme heterojunctions with enhanced visible light hydrogen production

Chen¹,

Li²,

Dai³

et al. 2022

J. Phys. D: Appl. Phys.

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The activity of photocatalysts depends, to a large extent, on the separation of internal charge carriers, thereby enhancing the redox ability. S-scheme photocatalysts have shown good hydrogen production performance, not only with good performance, but also with high reproducibility. In particular, 2D/2D S-scheme heterojunction materials have attracted great attention because of the rapid charge separation and transfer rate between the interfaces. In this work, porous g-C3N4/CdS-diethylenetriamine (PCN/CS-D) S-scheme heterojunction is designed and fabricated by a facile microwave method. The designed PCN/CS-D photocatalyst has a hydrogen evolution rate of 12547 μmolg-1h-1, which is 15.6 and 2.4 times as high as that of PCN(806 μmolg-1h-1) and CS-D (5209 μmolg-1h-1), respectively. The combination of PCN and CS-D improves the separation of electron-hole pairs and the rate of charge transfer.

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Section: Resultsmentioning

confidence: 99%

Microwave-assisted synthesis of organic–inorganic hybrid porous g-C₃N₄/CdS–diethylenetriamine S-scheme heterojunctions with enhanced visible light hydrogen production

Chen¹,

Li²,

Dai³

et al. 2022

J. Phys. D: Appl. Phys.

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“…The FTIR spectra of the g-C 3 N 4 , gU-3, gUS-1, and CdS are presented in Figure 2 b. The g-C 3 N 4 spectrum exhibits peaks at 811 and 1235 cm −1 that are ascribed to the bending vibration of triazine units and stretching modes of C–N–C groups [ 25 ]. The CdS also generated peaks between 1200 and 1800 cm −1 that are attributed to Cd-S bonds [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

Preparation of a g-C3N4/UiO-66-NH2/CdS Photocatalyst with Enhanced Visible Light Photocatalytic Activity for Tetracycline Degradation

Zhang

et al. 2020

Nanomaterials

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A combination of calcination and hydrothermal processing was used to prepare a g-C3N4/UiO-66-NH2/CdS photocatalyst, and the degradation of tetracycline (TC) over this material was assessed. The photocatalytic performance of this nanocomposite was approximately 4.4 and 2.3 times those of CdS and g-C3N4, respectively, and was found to be affected by the CdS loading amount, the pH of the reaction solution and the initial TC concentration. This catalyst also exhibited stable performance over four consecutive reaction cycles. The highly enhanced photoactivity of the g-C3N4/UiO-66-NH2/CdS is attributed to the introduction of CdS, which widens the range over which the material absorbs visible light and inhibits the recombination of electron–hole pairs. The results of this study suggest further applications for this material in the treatment of contaminated wastewater powered by solar energy.

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“…If CdS and g-C 3 N 4 combine to form a heterojunction, there will inevitably be a photocatalytic performance of 1 plus 1 is greater than 2. Therefore, nanocomposites of g-C 3 N 4 and CdS have been widely reported and studied [22,26,27]. The combination of excellent single-layer g-C 3 N 4 and CdS will form a fast electron transport channel, and the separation efficiency of photogenerated electrons and holes can be greatly improved, thus showing an excellent rate of photohydrogen production.…”

Section: Introductionmentioning

confidence: 99%

CdS Deposited In Situ on g-C3N4 via a Modified Chemical Bath Deposition Method to Improve Photocatalytic Hydrogen Production

Ma,

Jiang,

Lin

et al. 2023

Molecules

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Ultra-thin two-dimensional materials are attracting widespread interest due to their excellent properties, and they are becoming ideal candidates for a variety of energy and environmental photocatalytic applications. Herein, CdS nanorods are successfully grown in situ between a monolayer of g-C3N4 using a chemical water bath method. Continuous ultrasound is introduced during the preparation process, which effectively prevents the accumulation of a g-C3N4 layer. The g-C3N4@CdS nanocomposite exhibits significantly enhanced photocatalytic activity for hydrogen production under visible-light irradiation, which is attributed to a well-matched band structure and an intimate van der Waals heterojunction interface. The mechanism of photocatalytic hydrogen production is discussed in detail. Moreover, our work can serve as a basis for the construction of other highly catalytically active two-dimensional heterostructures.

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The 2D Porous g-C₃N₄/CdS Heterostructural Nanocomposites with Enhanced Visible-Light-Driven Photocatalytic Activity

Cited by 12 publications

References 0 publications

Microwave-assisted synthesis of organic–inorganic hybrid porous g-C₃N₄/CdS–diethylenetriamine S-scheme heterojunctions with enhanced visible light hydrogen production

Microwave-assisted synthesis of organic–inorganic hybrid porous g-C₃N₄/CdS–diethylenetriamine S-scheme heterojunctions with enhanced visible light hydrogen production

Preparation of a g-C3N4/UiO-66-NH2/CdS Photocatalyst with Enhanced Visible Light Photocatalytic Activity for Tetracycline Degradation

CdS Deposited In Situ on g-C3N4 via a Modified Chemical Bath Deposition Method to Improve Photocatalytic Hydrogen Production

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The 2D Porous g-C3N4/CdS Heterostructural Nanocomposites with Enhanced Visible-Light-Driven Photocatalytic Activity

Cited by 12 publications

References 0 publications

Microwave-assisted synthesis of organic–inorganic hybrid porous g-C3N4/CdS–diethylenetriamine S-scheme heterojunctions with enhanced visible light hydrogen production

Microwave-assisted synthesis of organic–inorganic hybrid porous g-C3N4/CdS–diethylenetriamine S-scheme heterojunctions with enhanced visible light hydrogen production

Preparation of a g-C3N4/UiO-66-NH2/CdS Photocatalyst with Enhanced Visible Light Photocatalytic Activity for Tetracycline Degradation

CdS Deposited In Situ on g-C3N4 via a Modified Chemical Bath Deposition Method to Improve Photocatalytic Hydrogen Production

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The 2D Porous g-C₃N₄/CdS Heterostructural Nanocomposites with Enhanced Visible-Light-Driven Photocatalytic Activity

Microwave-assisted synthesis of organic–inorganic hybrid porous g-C₃N₄/CdS–diethylenetriamine S-scheme heterojunctions with enhanced visible light hydrogen production

Microwave-assisted synthesis of organic–inorganic hybrid porous g-C₃N₄/CdS–diethylenetriamine S-scheme heterojunctions with enhanced visible light hydrogen production