Synthesis and evaluation of the structural, optical, and antibacterial properties of copper oxide nanoparticles

Sagadevan, Suresh; Vennila, Selvaraj; Marlinda, Ab Rahman; Al‐Douri, Y.; Johan, Mohd Rafie; Lett, J. Anita

doi:10.1007/s00339-019-2785-4

Cited by 64 publications

(9 citation statements)

References 41 publications

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“…To reduce the likelihood of infection, many different antibiotics are administered to patients at high doses, which may cause bacterial mutations and increase their drug resistance [ 8 , 9 ]. Many compounds and materials with antibacterial properties have been developed to prevent bacterial infections, including quaternary ammonium compounds [ 10 ], carbon nanotubes [ 11 ], metal ions [ 12 ], metal oxide molecules [ 13 ], and precious metal-based materials [ 14 ]. However, these antibacterial agents have disadvantages including environmental pollution, complexity, and the high cost of the production process or substrates [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermally Assisted Fabrication of TiO2-Fe3O4 Composite Materials and Their Antibacterial Activity

et al. 2020

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The TiO2-Fe3O4 composite materials were fabricated via the hydrothermal-assisted technique. It was determined how the molar ratio of TiO2 to Fe3O4 influences the crystalline structure and morphology of the synthesized composite materials. The effect of the molar ratio of components on the antibacterial activity was also analyzed. On the basis of XRD patterns for the obtained titanium(IV) oxide-iron(II, III) oxide composites, the two separate crystalline forms—anatase and magnetite —were observed. Transmission electron microscopy revealed particles of cubic and tetragonal shape for TiO2 and spherical for Fe3O4. The results of low-temperature nitrogen sorption analysis indicated that an increase in the iron(II, III) oxide content leads to a decrease in the BET surface area. Moreover, the superparamagnetic properties of titanium(IV) oxide-iron(II, III) oxide composites should be noted. An important aim of the work was to determine the antibacterial activity of selected TiO2-Fe3O4 materials. For this purpose, two representative strains of bacteria, the Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus, were used. The titanium(IV) oxide-iron(II, III) oxide composites demonstrated a large zone of growth inhibition for both Gram-positive and Gram-negative bacteria. Moreover, it was found that the analyzed materials can be reused as antibacterial agents in three consecutive cycles with good results.

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Section: Introductionmentioning

confidence: 99%

Hydrothermally Assisted Fabrication of TiO2-Fe3O4 Composite Materials and Their Antibacterial Activity

et al. 2020

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“…Absorption peaks in the range of 1035–1119 cm −1 are attributed to C—O stretching of primary and secondary alcohol [48] . The band at 617–651 cm −1 is assigned to Cu–O stretching vibration [49] .…”

Section: Resultsmentioning

confidence: 99%

Cu2O nanoparticles synthesized by green and chemical routes, and evaluation of their antibacterial and antifungal effect on functionalized textiles

Asmat-Campos

Oca-Vásquez²,

Rojas‐Jaimes

et al. 2023

Biotechnology Reports

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“…Dielectric constants for all of the complexes have been calculated from the plots of capacitance vs frequency ( Figure S27 ). Capacitance was measured by varying the frequency between 1 and 10 kHz, under a constant bias of 1 V. By using the conventional equation, 44 relative dielectric constants for complexes 1 , 2 , and 3 were measured and found 6.23, 2.27, and 4.13, respectively. The relatively lower dielectric constant of complex 2 is an indication of its potential use as an optoelectronic device to reduce power loss.…”

Section: Resultsmentioning

confidence: 99%

Crystallographic Aspects, Photophysical Properties, and Theoretical Survey of Tetrachlorometallates of Group 12 Metals [Zn(II), Cd(II), and Hg(II)] with a Triply Protonated 2,4,6-Tris(2-pyridyl)-1,3,5-triazine Ligand

Pramanik

Jana

Das³

et al. 2023

Inorg. Chem.

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Zn(II) (complex 1), Cd(II) (complex 2), and Hg(II) (complex 3) complexes have been synthesized using a triply protonated tptz (H 3 tptz 3+ ) ligand and characterized mainly by single-crystal X-ray analysis. The general formula of all of the complexes is (H 3 tptz) 3+ •Cl − •[MCl 4 ] 2− •nH 2 O (where n = 1, 1.5, and 1.5 for complexes 1, 2, and 3, respectively). The crystallographic analysis reveals that the anion•••π, anion•••π + , and several hydrogen bonding interactions play a fundamental role in the stabilization of the self-assembled architectures that in turn help to enhance the dimensionality of all of the complexes. In addition, Hirshfeld surfaces and fingerprint plots have been deployed here to visualize the similarities and differences in hydrogen bonding interactions in 1−3, which are very important in forming supramolecular architectures. A density functional theory (DFT) study has been used to analyze and rationalize the supramolecular interactions by using molecular electrostatic potential (MEP) surfaces and combined QTAIM/NCI plots. Then, the device parameters for the complexes (1−3) have been thoroughly investigated by fabricating a Schottky barrier diode (SBD) on an indium tin oxide (ITO) substrate. It has been observed that the device made from complex 2 is superior to those from complexes 1 and 3, which has been explained in terms of band gaps, differences in the electronegativities of the central metal atoms, and the better supramolecular interactions involved. Finally, theoretical calculations have also been performed to analyze the experimental differences in band gaps as well as electrical conductivities observed for all of the complexes. Henceforth, the present work combined supramolecular, photophysical, and theoretical studies regarding group 12 metals in a single frame.

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Synthesis and evaluation of the structural, optical, and antibacterial properties of copper oxide nanoparticles

Cited by 64 publications

References 41 publications

Hydrothermally Assisted Fabrication of TiO2-Fe3O4 Composite Materials and Their Antibacterial Activity

Hydrothermally Assisted Fabrication of TiO2-Fe3O4 Composite Materials and Their Antibacterial Activity

Cu2O nanoparticles synthesized by green and chemical routes, and evaluation of their antibacterial and antifungal effect on functionalized textiles

Crystallographic Aspects, Photophysical Properties, and Theoretical Survey of Tetrachlorometallates of Group 12 Metals [Zn(II), Cd(II), and Hg(II)] with a Triply Protonated 2,4,6-Tris(2-pyridyl)-1,3,5-triazine Ligand

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