Green synthesis of a CuO/rGO nanocomposite using a <i>Terminalia arjuna</i> bark extract and its catalytic activity for the purification of water

Kumari, Vanita; Singh, Prit Pal; Kaushal, Sandeep

doi:10.1039/d1ma00993a

Cited by 38 publications

(11 citation statements)

References 73 publications

(72 reference statements)

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“…44 The peak at around 159 eV was unchanged, implying that there is no signicant change in the oxygen content. 44 For the NiCu/rGO nanocomposite, a similar trend as that of the NiCu/GO nanocomposite was observed. However, there are some differences in some peaks.…”

Section: Resultsmentioning

confidence: 96%

“…The peak at around 284 eV was shifted to higher binding energy, indicating that more oxygen atoms were present on the surface. 44 The peak at around 172 eV also was shifted slightly, suggesting that more carbon atoms were attached to the GO layer. 44 The peak at around 159 eV was unchanged, implying that there is no significant change in the oxygen content.…”

Section: Resultsmentioning

confidence: 99%

“…44 The peak at around 172 eV also was shifted slightly, suggesting that more carbon atoms were attached to the GO layer. 44 The peak at around 159 eV was unchanged, implying that there is no significant change in the oxygen content. 44 For the NiCu/rGO nanocomposite, a similar trend as that of the NiCu/GO nanocomposite was observed.…”

Section: Resultsmentioning

confidence: 99%

“…The XPS spectra that were previously reported for NiCu, NiCu/GO, and NiCu/rGO nanocomposites reveal the surface elements and groups, their binding energy, and the electronic structure of the catalysts. [43][44][45] For the NiCu nanocomposite, a peak at around 284 eV was attributed to the Ni 2+ ions and the peak around 172 eV was due to the Cu 2+ ions. 43 The peak at around 159 eV was related to the oxygen atoms, whereas the peak at around 137 eV was assigned to the carbon atoms.…”

Section: Resultsmentioning

confidence: 99%

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Fabrication and characterization of NiCu/GO and NiCu/rGO nanocomposites for fuel cell application

Mohamed,

Shaban,

Kordy

et al. 2024

RSC Adv.

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show abstract

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Fabrication and characterization of NiCu/GO and NiCu/rGO nanocomposites for fuel cell application

Mohamed,

Shaban,

Kordy

et al. 2024

RSC Adv.

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“…1) This hybrid material has shown outstanding adsorption capabilities for heavy metal ions removal, speci cally Bi 3+ (98%) and Cd 2+ (91%) ions. The photocatalytic action of this dazzling nanocomposite for the breakdown of anionic dyes such as Eriochrome black T and methyl orange in water bodies is another aspect of this dazzling nanocomposite (Kumari et al, 2022).…”

Section: Green Synthesis Of Nanocompositesmentioning

confidence: 99%

Environmental remediation through wastewater management via hybrid nanocomposite matrix – A organized review

Pal

Chakroborty²,

Panda

et al. 2022

Preprint

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Pollution of water is currently a significant worry for scientific communities all over the world, and it is imperative that this problem be solved as quickly as possible. It is today recognized to be one of the most important foci of research worldwide. The present dilemma of clean, fresh waste is being addressed by the subsequent ejection of impurities from polluted water following recycling. There are several effective solutions that have been promoted as a solution to this problem. Even if the present procedures for wastewater treatment degrade a wide variety of effluents efficiently, these protocols still have some kind of restrictions. The most cutting-edge research in this area is being done on the subject of nanotechnology, which has an astounding number of potential uses, one of which is the treatment of wastewater. One of the value-added alternatives utilized for water purification by eliminating the many types of pollutants found in wastewater is the green synthesis of nanocomposites in adsorbents, magnetic separation, photocatalysts and other similar processes. Within the scope of this study, the most significant discoveries of nanocomposites to date that have been made towards the remediation of wastewater are highlighted.

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Elucidating the structural, catalytic, and antibacterial traits of Ficus carica and Azadirachta indica leaf extract‐mediated synthesis of the Ag/CuO/rGO nanocomposite

Fayyaz,

Farrukh,

Ul‐Hamid

et al. 2024

Microscopy Res & Technique

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The present exploration demonstrates the efficient, sustainable, cost‐effective, and environment‐friendly green approach for the synthesis of silver (Ag)‐doped copper oxide (CuO) embedded with reduced graphene oxide (rGO) nanocomposite using the green one‐pot method and the green deposition method. Leaf extracts of Ficus carica and Azadirachta indica were used for both methods as reducing and capping agents. The effect of methodology and plant extract was analyzed through different characterization techniques such as UV‐visible spectroscopy, Fourier transform infrared (FT‐IR) spectroscopy, thermogravimetric analysis (TGA), x‐ray diffraction (XRD) analysis, scanning electron microscopy (SEM), high‐resolution transmission electron microscopy (HRTEM). The lowest band gap of 3.0 eV was observed for the Ag/CuO/rGO prepared by the green one‐pot method using F. carica. The reduction of graphene oxide (GO) and the formation of metal oxide was confirmed through functional group detection using FT‐IR. Calculation of thermodynamic parameters showed that all reactions involved were nonspontaneous and endothermic which shows the stability of nanocomposites. XRD studies revealed the crystallinity, phase purity and small average crystallite size of 32.67 nm. SEM images disclosed that the morphology of the nanocomposites was spherical with agglomeration and rough texture. The particle size of the nanocomposites calculated through HRTEM was found in agreement with the XRD results. The numerous properties of the synthesized nanocomposites enhanced their potential against the degradation of methylene blue, rhodamine B, and ciprofloxacin. The highest percentage degradation of Ag/CuO/rGO was found to be 97%, synthesized using the green one‐pot method with F. carica against ciprofloxacin, which might be due to the lowest band gap, delayed electron–hole pair recombination, and large surface area available. The nanocomposites were also tested against the Gram‐positive and Gram‐negative bacteria.Research Highlights Facile synthesis of Ag/CuO/rGO nanocomposite using a green one‐pot method and the green deposition method. The lowest band gap of 3.0 eV was observed for nanocomposite prepared by a green one‐pot method using Ficus carica. Least average crystallite size of 32.67 nm was found for nanocomposite prepared by a green one‐pot method using F. carica. Highest antibacterial and catalytic activity (97%) was obtained against ciprofloxacin with nanocomposite prepared through green one‐pot method using F. carica. A mechanism of green synthesis is proposed.

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Green synthesis of a CuO/rGO nanocomposite using a Terminalia arjuna bark extract and its catalytic activity for the purification of water

Abstract: Biogenic synthesis of CuO/rGO nanocomposites was carried out successfully using Terminalia Arjuna bark extract. Various analytical methods such as UV-visible (UV-Vis), Fourier transform infrared (FTIR), X-ray diffraction (XRD) analysis, Field...

Cited by 38 publications

References 73 publications

Fabrication and characterization of NiCu/GO and NiCu/rGO nanocomposites for fuel cell application

Fabrication and characterization of NiCu/GO and NiCu/rGO nanocomposites for fuel cell application

Environmental remediation through wastewater management via hybrid nanocomposite matrix – A organized review

Elucidating the structural, catalytic, and antibacterial traits of Ficus carica and Azadirachta indica leaf extract‐mediated synthesis of the Ag/CuO/rGO nanocomposite

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