g-C3N4 quantum dot decorated MoS2/Fe3O4 as a novel recoverable catalyst for photodegradation of organic pollutant under visible light

Zarei, Mohammad; Mohammadzadeh, Iman; Saidi, Kazem; Sheibani, Hassan

doi:10.1007/s10854-021-06790-w

Cited by 11 publications

(7 citation statements)

References 47 publications

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“…The g–C 3 N 4 powder was synthesized by polymerization of melamine. 26 In brief, 10.0 g of melamine powder in a ceramic crucible was placed in a muffle furnace at 550 °C for 4 h. The product was then transferred to a desiccator for about 2 h.…”

Section: Methodsmentioning

confidence: 99%

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Synthesis of Ag–Cu–Ni Nanoparticles Stabilized on Functionalized g–C₃N₄ and Investigation of Its Catalytic Activity in the A³-Coupling Reaction

et al. 2023

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In the present research, using ethylenediamine and hydrazine hydrate as the capping and reducing agents in this investigation, respectively, Ag–Cu–Ni NPs were immobilized on the functionalized g–C3N4 surface. This nanocatalyst was studied in terms of its catalytic activities for the A3-coupling reaction to synthesize propargylamine derivatives. According to the results, in the presence of 1 mL of toluene as the solvent and 20 mg of the g–C3N4–TCT–2AEDSEA–Ag–Cu–Ni nanocatalyst, the maximum efficiency of the nanocatalyst occurred at a temperature of 80 °C. Products were purified using thin-layer chromatography plates (silica gel) by employing n-hexane/ethyl acetate with a 90:10 ratio. In addition, the prominent benefits of the synthesized nanocatalyst include its high yields of the product, cost-effectiveness, recyclability, and easy separation. The novelty of the catalyst is due to the presence of Ag–Cu–Ni nanoparticles at the same time in the structure of the functionalized g–C3N4 substrate. So, Ag–Cu–Ni can be strongly connected to the substrate. The structure of the synthesized nanocatalyst was characterized using Fourier transformed infrared spectroscopy, X-ray powder diffraction, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, vibrating-sample magnetometry, and transmission electron microscopy.

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Section: Methodsmentioning

confidence: 99%

“…This project's purpose is to prepare propargylamine derivatives using a reasonable, straightforward, and economically suitable method. 26 In brief, 10.0 g of melamine powder in a ceramic crucible was placed in a muffle furnace at 550 °C for 4 h. The product was then transferred to a desiccator for about 2 h.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ag–Cu–Ni Nanoparticles Stabilized on Functionalized g–C₃N₄ and Investigation of Its Catalytic Activity in the A³-Coupling Reaction

et al. 2023

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“…The following supporting information can be downloaded at: https:// www.mdpi.com/article/10.3390/nano14010103/s1, Figure S1 S1: Normalized reaction rate (k) values for the MO photodegradation reaction in the presence of photocatalytic samples exfoliated at 550 • C and 600 • C; Table S2: Performance of C 3 N 4 -based samples for degradation of MO under visible light irradiation in recently published literature. References [131][132][133][134][135][136][137][138][139][140][141] are cited in the Supplementary Materials.…”

Section: Supplementary Materialsmentioning

confidence: 99%

Exploring the Remarkably High Photocatalytic Efficiency of Ultra-Thin Porous Graphitic Carbon Nitride Nanosheets

Kalantari Bolaghi,

Rodriguez-Seco,

Yurtsever

et al. 2024

Nanomaterials

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Graphitic carbon nitride (g-C3N4) is a metal-free photocatalyst used for visible-driven hydrogen production, CO2 reduction, and organic pollutant degradation. In addition to the most attractive feature of visible photoactivity, its other benefits include thermal and photochemical stability, cost-effectiveness, and simple and easy-scale-up synthesis. However, its performance is still limited due to its low absorption at longer wavelengths in the visible range, and high charge recombination. In addition, the exfoliated nanosheets easily aggregate, causing the reduction in specific surface area, and thus its photoactivity. Herein, we propose the use of ultra-thin porous g-C3N4 nanosheets to overcome these limitations and improve its photocatalytic performance. Through the optimization of a novel multi-step synthetic protocol, based on an initial thermal treatment, the use of nitric acid (HNO3), and an ultrasonication step, we were able to obtain very thin and well-tuned material that yielded exceptional photodegradation performance of methyl orange (MO) under visible light irradiation, without the need for any co-catalyst. About 96% of MO was degraded in as short as 30 min, achieving a normalized apparent reaction rate constant (k) of 1.1 × 10−2 min−1mg−1. This represents the highest k value ever reported using C3N4-based photocatalysts for MO degradation, based on our thorough literature search. Ultrasonication in acid not only prevents agglomeration of g-C3N4 nanosheets but also tunes pore size distribution and plays a key role in this achievement. We also studied their performance in a photocatalytic hydrogen evolution reaction (HER), achieving a production of 1842 µmol h−1 g−1. Through a profound analysis of all the samples’ structure, morphology, and optical properties, we provide physical insight into the improved performance of our optimized porous g-C3N4 sample for both photocatalytic reactions. This research may serve as a guide for improving the photocatalytic activity of porous two-dimensional (2D) semiconductors under visible light irradiation.

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“…Other inorganic semiconductors have been used as hybridizing agents with g‐C 3 N 4 QDs to produce either binary or ternary photocatalysts such as MoS 2 , Fe 3 O 4 , BiPO 4 , InVO 4 , BiVO 4 , Bi 2 WO 6 , Bi 2 Ti 2 O 7 , Bi 2 MoO 6 , and so on [68,72,77,177–179] . For instance, the study conducted by Zarei et al [177] .…”

Section: Applications Of G‐c3n4 Qdsmentioning

confidence: 99%

Graphitic Carbon Nitride Quantum Dots (g‐C₃N₄ QDs): From Chemistry to Applications

Majdoub,

Sengottuvelu,

Nouranian

et al. 2024

ChemSusChem

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Since their emergence in 2014, graphitic carbon nitride quantum dots (g‐C3N4 QDs) have attracted much interest from the scientific community due to their distinctive physicochemical features, including structural, morphological, electrochemical, and optoelectronic properties. Owing to their desirable characteristics, such as non‐zero band gap, ability to be chemically functionalized or doped, possessing tunable properties, outstanding dispersibility in different media, and biocompatibility, g‐C3N4 QDs have shown promise for photocatalysis, energy devices, sensing, bioimaging, solar cells, optoelectronics, among other applications. As these fields are rapidly evolving, it is very strenuous to pinpoint the emerging challenges of the g‐C3N4 QDs development and application during the last decade, mainly due to the lack of critical reviews of the innovations in the g‐C3N4 QDs synthesis pathways and domains of application. Herein, an extensive survey is conducted on the g‐C3N4 QD synthesis, characterization, and applications. Scenarios for the future development of g‐C3N4 QDs and their potential applications are highlighted and discussed in detail. The provided critical section suggests a myriad of opportunities for g‐C3N4 QDs, especially for their synthesis and functionalization, where a combination of eco‐friendly/single step synthesis and chemical modification may be used to prepare g‐C3N4 QDs with, for example, enhanced photoluminescence and production yields.

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g-C3N4 quantum dot decorated MoS2/Fe3O4 as a novel recoverable catalyst for photodegradation of organic pollutant under visible light

Cited by 11 publications

References 47 publications

Synthesis of Ag–Cu–Ni Nanoparticles Stabilized on Functionalized g–C₃N₄ and Investigation of Its Catalytic Activity in the A³-Coupling Reaction

Synthesis of Ag–Cu–Ni Nanoparticles Stabilized on Functionalized g–C₃N₄ and Investigation of Its Catalytic Activity in the A³-Coupling Reaction

Exploring the Remarkably High Photocatalytic Efficiency of Ultra-Thin Porous Graphitic Carbon Nitride Nanosheets

Graphitic Carbon Nitride Quantum Dots (g‐C₃N₄ QDs): From Chemistry to Applications

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g-C3N4 quantum dot decorated MoS2/Fe3O4 as a novel recoverable catalyst for photodegradation of organic pollutant under visible light

Cited by 11 publications

References 47 publications

Synthesis of Ag–Cu–Ni Nanoparticles Stabilized on Functionalized g–C3N4 and Investigation of Its Catalytic Activity in the A3-Coupling Reaction

Synthesis of Ag–Cu–Ni Nanoparticles Stabilized on Functionalized g–C3N4 and Investigation of Its Catalytic Activity in the A3-Coupling Reaction

Exploring the Remarkably High Photocatalytic Efficiency of Ultra-Thin Porous Graphitic Carbon Nitride Nanosheets

Graphitic Carbon Nitride Quantum Dots (g‐C3N4 QDs): From Chemistry to Applications

Contact Info

Product

Resources

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Synthesis of Ag–Cu–Ni Nanoparticles Stabilized on Functionalized g–C₃N₄ and Investigation of Its Catalytic Activity in the A³-Coupling Reaction

Synthesis of Ag–Cu–Ni Nanoparticles Stabilized on Functionalized g–C₃N₄ and Investigation of Its Catalytic Activity in the A³-Coupling Reaction

Graphitic Carbon Nitride Quantum Dots (g‐C₃N₄ QDs): From Chemistry to Applications