Carbon nitride based Schottky junction with a Ni–Mo synergistic interaction for highly efficient photocatalytic hydrogen production

Ding, Lei; Wang, Lijing; Liu, Ru-Yi; Li, Yanfei; Sun, Haizhu

doi:10.1039/d2cy00792d

Cited by 7 publications

(5 citation statements)

References 69 publications

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“…Figure 3b is the C 1s core-level spectra of MCA, which can be deconvoluted into four peaks at 289.58, 287.97, 286.28, and 284.79 eV corresponding to the existence of ─C─C═O, ─N─C═O, ─C─O and graphic C. The N 1s spectra of MCA is shown in Figure 3c that are fitted into three peaks at 400.78, 399.25, and 398.51 eV contributed by ─NH x , C─N═C and C─N─C, respectively. [37,38] The above results of XPS for MCA are consistent with the molecular schematic diagram in Figure 2o, and match well with the results of XRD simultaneously. Which evidence the successful fabrication of MCA supermolecule polymer precursor afresh.…”

Section: Structure and Morphological Characterization Of The Materialssupporting

confidence: 87%

“…It can be detected that the absorption peak positions of different samples are almost the same, for example, the peaks at the wavenumber of 810-890 cm −1 corresponding to the vibration absorption of triazine ring including the bending vibrations of C─H and N─H, the stretching vibration absorption of C─N in triazine structure (1200-1310 cm −1 and 1419-1457 cm −1 ), the shear vibration absorption of N─H at the wavenumber of 1567-1635 cm −1 and the wide peak corresponding to stretching vibration of ─NH x at the wavenumber range of 3000-3400 cm −1 . [20,38] And only the absorption peak intensity decreases as the heating time protracts, which result from the volatilization of end chain amino groups in the form of ammonia during the calcination and the reduction of triazine ring repeat units within the layer. The SSA and porosity of different materials were achieved by a nitrogen adsorption and desorption testing system.…”

Section: Structure and Morphological Characterization Of The Materialsmentioning

confidence: 99%

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Supermolecule Polymer Derived Porous Carbon Nitride Microspheres with Controllable Energy Band Structure for Photocatalytic Hydrogen Evolution Reaction

Xie,

Gao,

Hussain

et al. 2023

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Porous graphitic carbon nitride microsphere with large specific surface area and controllable energy band structure is synthesized via a simple method with the supermolecule polymer of melamine‐cyanuric acid (MCA) as the intermediates. The energy band structure and morphology of carbon nitride are closely correlative to the calcination time. And the CN‐20 catalyst fabricated by calcination for 20 h exhibit superior photocatalytic activity of hydrogen evolution reaction (HER) under visible‐light (λ ≥ 420 nm) irradiation. The photocatalytic and photoelectrochemical test results indicate that Pt is the optimum cocatalyst candidate compared with Pd, Ru, and Ag. Meanwhile, the time‐dependent process of the intermediate pyrolysis to carbon nitride and the internal mechanism of photogenerated charge transfer between semiconductors and cocatalyst is investigated and supplemented by theoretical calculations. This work provides a novel and energy band structure controllable manufacture strategy for porous carbon nitride semiconductor with satisfying visible‐light photocatalytic reduction performance.

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Section: Structure and Morphological Characterization Of The Materialssupporting

confidence: 87%

Section: Structure and Morphological Characterization Of The Materialsmentioning

confidence: 99%

Supermolecule Polymer Derived Porous Carbon Nitride Microspheres with Controllable Energy Band Structure for Photocatalytic Hydrogen Evolution Reaction

Xie,

Gao,

Hussain

et al. 2023

Small

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“…Ding et al fabricated 0D/2D g-C 3 N 4 /3NiMoP 2 for highly efficient photocatalytic hydrogen production. Due to the synergy between Ni and Mo, and superior charge separation, the best photocatalyst produced 783 µmol g −1 h −1 under visible light [55].…”

Section: Construction Of Heterojunctional Photocatalysts 2d/2d and 1d/2dmentioning

confidence: 99%

Activating two-dimensional semiconductors for photocatalysis: a cross-dimensional strategy

Botella,

Cao,

Celis

et al. 2024

J. Phys.: Condens. Matter

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The emerging 2D semiconductors substantially extend materials bases for versatile applications such as semiconductor photocatalysis demanding semiconductive matrices and large surface areas. The dimensionality, while endowing 2D semiconductors the unique properties to host photocatalytic functionality of pollutant removal and hydrogen evolution, hurdles the activation paths to form heterogenous photocatalysts where the photochemical processes are normally superior over these on the mono-compositional counterparts. In this perspective, we present a cross-dimensional strategy to employ the nD (n=0-2) clusters or nanomaterials as activation partners to boost the photocatalytic activities of the 2D semiconductors. The formation principles of heterogenous photocatalysts are illustrated specifically for the 2D matrices, followed by selection criteria of them among the vast 2D database. The computer investigations are illustrated in the density functional theory route and machine learning benefitted from the vast samples in the 2D library. Synthetic realizations and characterizations of the 2D heterogenous systems are introduced with an emphasis on chemical methods and advanced techniques to understand materials and mechanistic studies. The perspective outlooks cross-dimensional activation strategies of the 2D materials for other applications such as CO2 removal, and materials matrices in other dimensions which may inspire incoming research within these fields.

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“…Although photocatalysis has been considered as an effective mechanism for removing pollutants, there are still some limitations that prohibit its further applications, such as wide bandgap energies, low light absorption capacity and fast recombination rates of the photo-induced electrons and holes. On the basis of that fact, researchers proposed the photocatalytic–photothermal effect, which can achieve the more efficient use of sunlight as well as overcome the bottlenecks of photocatalysis [87]. Recently, some studies have focused on the synergistic effect of photocatalytic and photothermal processes using the solar light irradiation [88,89].…”

Section: Pollutants Removal Mechanismsmentioning

confidence: 99%

The use of bimetallic metal–organic frameworks as restoration materials for pollutants removal from water environment

Yuan,

Li,

Zhu

2024

R. Soc. Open Sci.

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Bimetallic metal–organic frameworks (BMOFs) are a class of functional porous materials constructed by coordination between nodes containing two different metal ions and organic ligands. Studies have shown that the catalytic activity of BMOFs is greatly improved owing to the adjustment of charge distribution and the increase of active sites as well as the synergistic effect between the bimetals, and the advantages of their large specific surface area, high porosity, unique structure and dispersed active centres make them available as important organic materials applied in the field of wastewater treatment. In this review, the preparation and construction methods for BMOFs in recent years are summarized, and we focus on their removal of different types of pollutants in the aqueous environment, including ions, dyes, pharmaceuticals or personal care products, phenolic compounds and microorganisms, as well as their corresponding removal mechanisms. In addition, we provide an outlook on their future opportunities and challenges in wastewater treatment.

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Carbon nitride based Schottky junction with a Ni–Mo synergistic interaction for highly efficient photocatalytic hydrogen production

Abstract: It remains a great challenge to develop low cost cocatalysts with comparable performance to noble metals for photocatalytic hydrogen evolution. Herein, in-situ growth of nanosized bimetallic phosphides NiMoP2 on graphite...

Cited by 7 publications

References 69 publications

Supermolecule Polymer Derived Porous Carbon Nitride Microspheres with Controllable Energy Band Structure for Photocatalytic Hydrogen Evolution Reaction

Supermolecule Polymer Derived Porous Carbon Nitride Microspheres with Controllable Energy Band Structure for Photocatalytic Hydrogen Evolution Reaction

Activating two-dimensional semiconductors for photocatalysis: a cross-dimensional strategy

The use of bimetallic metal–organic frameworks as restoration materials for pollutants removal from water environment

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