Photocatalytic hydrogen generation from a methanol–water mixture in the presence of g-C3N4 and graphene/g-C3N4

Touati, Wassila; Karmaoui, Mohamed; Bekka, Ahmed; Edelmannová, Miroslava; Furgeaud, Clarisse; Chakib, Alaoui; Allah, Imene Kadi; figueiredo, Bruno; Labrincha, J.A.; Arenal, Raúl; Koci, Kamila; Tobaldi, David Maria

doi:10.1039/d2nj04275d

New J. Chem.

2022

DOI: 10.1039/d2nj04275d

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Photocatalytic hydrogen generation from a methanol–water mixture in the presence of g-C₃N₄ and graphene/g-C₃N₄

Wassila Touati

Mohamed Karmaoui

Ahmed Bekka

et al.

Abstract: Graphitic carbon nitride (g-C3N4) possessing high thermal and chemical stability, non-toxicity, facile synthesis, and low band gap energy is a promising candidate for photocatalytic applications. In this study, bulk and...

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Microtubular Nanoporous g-C₃N₄@Ag as an Efficient Photocarrier Transfer Agent and Visible Light-Harvesting for Photodegradation of Methylene Blue

Sirusy,

Ashrafi,

Akhond

2023

ACS Appl. Nano Mater.

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Microtubular nanoporous graphitic carbon nitride@silver (MN-g-C3N4@Ag) was synthesized in order to investigate the efficiency of a photocarrier transfer agent and visible light-harvesting to improve the applicability of photocatalytic reactions in solving the environmental pollution problem. The content of AgNPs was optimized, and MN-g-C3N4 with 5% of Ag shows the best performance. The results indicated that Ag nanoparticles were homogeneously distributed onto the MN-g-C3N4 surface, which leads to the absorption and harvesting of more visible light on the catalyst. The statistical analysis of the experimental data showed that the kinetic model and the adsorption isotherms for the surface adsorption process are consistent with the Langmuir isotherm [Q max = 272.0 (mg g–1)] and the pseudo-second-order kinetics [Q e.cal = 280.0 (mg g–1)]. Also, the kinetic rate constant of photocatalytic degradation for the MN-g-C3N4@Ag photocatalyst is 7.5 times higher than that of MN-g-C3N4 and 59.0 times higher than that of bulk g-C3N4. Also, the mechanism of photocatalytic degradation showed that holes and •O2 – are the main species for photocatalytic degradation of MB through surface adsorption. As a result, the MN-g-C3N4@Ag nanocomposite can use silver metal as both a Schottky barrier and plasmonic effects generator and MN-g-C3N4 itself as a porous photocatalyst with unique charge transfers in the axial direction. Which can synergistically be prolonged lifetime and photocarrier diffusion length, proving that MN-g-C3N4@Ag can efficiently be operated in environmental pollutant remediation.

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Microtubular Nanoporous g-C₃N₄@Ag as an Efficient Photocarrier Transfer Agent and Visible Light-Harvesting for Photodegradation of Methylene Blue

Sirusy,

Ashrafi,

Akhond

2023

ACS Appl. Nano Mater.

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Photocatalytic hydrogen generation from a methanol–water mixture in the presence of g-C₃N₄ and graphene/g-C₃N₄

Abstract: Graphitic carbon nitride (g-C3N4) possessing high thermal and chemical stability, non-toxicity, facile synthesis, and low band gap energy is a promising candidate for photocatalytic applications. In this study, bulk and...

Cited by 1 publication

References 81 publications

Microtubular Nanoporous g-C₃N₄@Ag as an Efficient Photocarrier Transfer Agent and Visible Light-Harvesting for Photodegradation of Methylene Blue

Microtubular Nanoporous g-C₃N₄@Ag as an Efficient Photocarrier Transfer Agent and Visible Light-Harvesting for Photodegradation of Methylene Blue

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Photocatalytic hydrogen generation from a methanol–water mixture in the presence of g-C3N4 and graphene/g-C3N4

Abstract: Graphitic carbon nitride (g-C3N4) possessing high thermal and chemical stability, non-toxicity, facile synthesis, and low band gap energy is a promising candidate for photocatalytic applications. In this study, bulk and...

Cited by 1 publication

References 81 publications

Microtubular Nanoporous g-C3N4@Ag as an Efficient Photocarrier Transfer Agent and Visible Light-Harvesting for Photodegradation of Methylene Blue

Microtubular Nanoporous g-C3N4@Ag as an Efficient Photocarrier Transfer Agent and Visible Light-Harvesting for Photodegradation of Methylene Blue

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Product

Resources

About

Photocatalytic hydrogen generation from a methanol–water mixture in the presence of g-C₃N₄ and graphene/g-C₃N₄

Microtubular Nanoporous g-C₃N₄@Ag as an Efficient Photocarrier Transfer Agent and Visible Light-Harvesting for Photodegradation of Methylene Blue

Microtubular Nanoporous g-C₃N₄@Ag as an Efficient Photocarrier Transfer Agent and Visible Light-Harvesting for Photodegradation of Methylene Blue