Two-dimensional Cu nanostructures for efficient photo-catalytic degradation of methylene blue

Chandan, Mohammed Rehaan; Kumar, Kodi Rajesh; Shaik, Aabid Hussain

doi:10.1039/d2va00144f

Cited by 4 publications

(2 citation statements)

References 48 publications

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“…The probable charge carrier transfer mechanism for the degradation of MB using Cu@PET-g-PAA composite membrane is demonstrated shown in Figure 11c. As previously suggested [67], Cu nanoclusters supported on PET-g-PAA membrane absorb the photon energy, which is equal to its energy band gap and generates electrons and holes, thereby promoting the transfer of electrons from the valence band to the conduction band, leaving holes in the valence band. These electrons and holes in the conduction band and valence band react with the available acceptor and donor species absorbed on the surface of the photocatalyst to produce superoxide and hydroxyl radicals [67,68].…”

Section: Mechanism Of Mb Decomposition In the Presence Of Composite Temsmentioning

confidence: 62%

“…As previously suggested [67], Cu nanoclusters supported on PET-g-PAA membrane absorb the photon energy, which is equal to its energy band gap and generates electrons and holes, thereby promoting the transfer of electrons from the valence band to the conduction band, leaving holes in the valence band. These electrons and holes in the conduction band and valence band react with the available acceptor and donor species absorbed on the surface of the photocatalyst to produce superoxide and hydroxyl radicals [67,68]. Since Cu@PET-g-PAA is a porous composite with a high surface area, it provides more active sites for electrons and holes to react with acceptor and donor species and helps to form more superoxide and hydroxyl radicals [69].…”

Section: Mechanism Of Mb Decomposition In the Presence Of Composite Temsmentioning

confidence: 62%

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e-Beam and γ-rays Induced Synthesis and Catalytic Properties of Copper Nanoclusters-Deposited Composite Track-Etched Membranes

et al. 2023

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Effective removal of toxic inorganic and organic pollutants is one of the current leading challenges of wastewater treatment. In this study, the decomposition of methylene blue (MB) under UV light irradiation was investigated in the presence of copper nanoclusters (NCs)-deposited polyethylene terephthalate (PET) track-etched hybrid membranes. PET track-etched membranes (TeMs) with an average pore size of ~400 nm were grafted by functional acrylic acid (AA) monomer under electron beam irradiation after oxidation with H2O2/UV system. The radiation dose varied between 46 and 200 kGy. For the deposition of copper NCs, poly(acrylic acid) (PAA)-grafted membranes saturated with Cu(II) ions were irradiated either by electron beam or γ-rays to obtain copper-based NCs for the catalytic degradation of MB. Irradiation to 100 kGy with accelerated electrons resulted in the formation of small and uniform copper hydroxide (Cu(OH)2) nanoparticles homogeneously distributed over the entire volume of the template. On the other hand, irradiation under γ-rays yielded composites with copper NCs with a high degree of crystallinity. However, the size of the deposited NCs obtained by γ-irradiation was not uniform. Nanoparticles with the highest uniformity were obtained at 150 kGy dose. Detailed analysis by X-ray diffraction (XRD) and scanning electron microscopy (SEM) confirmed the loading of copper nanoparticles with an average size of 100 nm on the inner walls of nanochannels and on the surface of PET TeMs. Under UV light irradiation, composite membranes loaded with NCs exhibited high photocatalytic activity. It was determined that the highest catalytic activity was observed in the presence of Cu(OH)2@PET-g-PAA membrane obtained at 250 kGy. More than 91.9% of the initial dye was degraded when this hybrid membrane was employed for 180 min, while only 83.9% of MB was degraded under UV light using Cu@PET-g-PAA membrane. Cu(OH)2@PET-g-PAA membranes obtained under electron beam irradiation demonstrated a higher photocatalytic activity compared to Cu@PET-g-PAA membranes attained by γ-rays.

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Section: Mechanism Of Mb Decomposition In the Presence Of Composite Temsmentioning

confidence: 62%

Section: Mechanism Of Mb Decomposition In the Presence Of Composite Temsmentioning

confidence: 62%

e-Beam and γ-rays Induced Synthesis and Catalytic Properties of Copper Nanoclusters-Deposited Composite Track-Etched Membranes

et al. 2023

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Prompt photocatalytic purification of dye wastewater using zinc doped nickel oxide nanostructures and Artima salina model for acute toxicity screening

JessieRaj,

Pavithra

2025

Next Nanotechnology

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Composite Track-Etched Membranes: Synthesis and Multifaced Applications

Mashentseva,

Sutekin,

Rakisheva

et al. 2024

Polymers

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Composite track-etched membranes (CTeMs) emerged as a versatile and high-performance class of materials, combining the precise pore structures of traditional track-etched membranes (TeMs) with the enhanced functionalities of integrated nanomaterials. This review provides a comprehensive overview of the synthesis, functionalization, and applications of CTeMs. By incorporating functional phases such as metal nanoparticles and conductive nanostructures, CTeMs exhibit improved performance in various domains. In environmental remediation, CTeMs effectively capture and decompose pollutants, offering both separation and detoxification. In sensor technology, they have the potential to provide high sensitivity and selectivity, essential for accurate detection in medical and environmental applications. For energy storage, CTeMs may be promising in enhancing ion transport, flexibility, and mechanical stability, addressing key issues in battery and supercapacitor performance. Biomedical applications may benefit from the versality of CTeMs, potentially supporting advanced drug delivery systems and tissue engineering scaffolds. Despite their numerous advantages, challenges remain in the fabrication and scalability of CTeMs, requiring sophisticated techniques and meticulous optimization. Future research directions include the development of cost-effective production methods and the exploration of new materials to further enhance the capabilities of CTeMs. This review underscores the transformative potential of CTeMs across various applications and highlights the need for continued innovation to fully realize their benefits.

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Two-dimensional Cu nanostructures for efficient photo-catalytic degradation of methylene blue

Abstract: This work reports the synthesis of stable oxidation-resistant two-dimensional copper (Cu) nanostructures using non-toxic reducing agents and a rapid simple chemical reduction technique by replacing conventional solvothermal methods. The formation...

Cited by 4 publications

References 48 publications

e-Beam and γ-rays Induced Synthesis and Catalytic Properties of Copper Nanoclusters-Deposited Composite Track-Etched Membranes

e-Beam and γ-rays Induced Synthesis and Catalytic Properties of Copper Nanoclusters-Deposited Composite Track-Etched Membranes

Prompt photocatalytic purification of dye wastewater using zinc doped nickel oxide nanostructures and Artima salina model for acute toxicity screening

Composite Track-Etched Membranes: Synthesis and Multifaced Applications

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