Synthesis and characterization of ZnO–CuO nanocomposites powder by modified perfume spray pyrolysis method and its antimicrobial investigation

Saravanakkumar, D.; Sivaranjani, S.; Kaviyarasu, K.; Ayeshamariam, A.; Ravikumar, B.; Pandiarajan, S.; Veeralakshmi, C.; Jayachandran, M.; Maaza, M.

doi:10.1088/1674-4926/39/3/033001

Cited by 155 publications

(40 citation statements)

References 47 publications

(45 reference statements)

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“…According to Pasquet, the antibacterial activity is significantly influenced by the concentration of Zn 2+ ions because a similar level of antibacterial activity against Pseudomonas aeruginosa was achieved using a ten‐times higher concentration of those ions than against Staphylococcus aureus . In other works it was mentioned that antibacterial properties are also shown by nanoparticles released from materials obtained by the “Green synthesis” method …”

Section: Resultsmentioning

confidence: 99%

The studies of cytotoxicity and antibacterial activity of composites with ZnO‐doped bioglass

Ciołek

Biernat

Jaegermann

et al. 2018

Int J Applied Ceramic Tech

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The paper presents results of the studies on porous composites obtained using lyophilization method based on the solutions of the following polymers: chitosan, sodium alginate and polylactide, as well as ZnO-doped CaO-SiO 2 -P 2 O 5 bioglass.The researchers took the advantage of zinc ions demonstrating the bactericidal, immune-stimulating, and tissue-regenerating functions in the organism. The cytotoxicity of the composites was tested on L929 cells by means of the direct and the indirect contact method. The antibacterial properties were determined against the gram-negative bacteria Pseudomonas aeruginosa and the gram-positive bacteria Staphylococcus aureus at 24, 48 hours, and 7 days. The study demonstrated that changes due to cytotoxicity effect of the composites depend on the type of polymer and on the duration of contact with cells. The composite with polylactide was found to be the least toxic for L929 cells. ZnO added to the chemical composition of bioglass ensured bactericidal effects. The antibacterial properties of the composites depended on the ZnO content, bioglass grain size, polymer type, and composite microstructure. The composites presented in this paper are innovative as biomaterials for filling bone cavities because they can be a matrix for cells and have an antibacterial effect while supporting the regeneration of damaged tissue. K E Y W O R D Santibacterial activity, bioglass, composite, cytotoxicity

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Section: Resultsmentioning

confidence: 99%

The studies of cytotoxicity and antibacterial activity of composites with ZnO‐doped bioglass

Ciołek

Biernat

Jaegermann

et al. 2018

Int J Applied Ceramic Tech

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“…The very weak peak at 2320 cm −1 corresponded to the symmetric C−H bond vibrations, which may have been present due to the environmental conditions. Stretching modes of C-O appeared at 1110 cm −1 , because of the acetate group improper decomposition [33]. The bands of 3000-3650 cm −1 were attributed to reversible dissociative absorption of hydrogen on Zn and O [34].…”

Section: Ftir Spectral Studymentioning

confidence: 98%

Synthesis of CuO/ZnO Nanocomposites and Their Application in Photodegradation of Toxic Textile Dye

et al. 2019

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CuO/ZnO composites are synthesized using a simple mechanochemical combustion method. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and Fourier transform infrared (FTIR) are used to characterize the prepared oxides. X-ray diffraction reveals that the prepared CuO/ZnO exhibit a wurtzite ZnO crystal structure and the composites are composed of CuO and ZnO. The strong peaks of the Cu, Zn, and O elements are exhibited in the EDX spectrum. The FTIR spectra appear at around 3385 cm −1 and 1637 cm −1 , caused by O-H stretching, and 400 cm −1 to 590 cm −1 , ascribable to Zn-O stretching. The photocatalytic performances of CuO/ZnO nanocomposites are investigated for the degradation of methylene blue (MB) aqueous solution in direct solar irradiation. The degradation value of MB with 5 wt % CuO/ZnO is measured to be 98%, after 2 h of solar irradiation. The reactive • O 2 − and • OH radicals play important roles in the photodegradation of MB. Mineralization of MB is around 91% under sunlight irradiation within 7 h. The photodegradation treatment for the textile wastewater using sunlight is an easy technique-simply handled, and economical. Therefore, the solar photodegradation technique may be a very effective method for the treatment of wastewater instead of photodegradation with the artificial and expensive Hg-Xe lamp.methyl orange. Kuriakose et al. [14] prepared CuO/ZnO nanocomposites using the carbothermal evaporation method and evaluated the photocatalytic degradation of methylene blue and methyl orange dyes under sunlight irradiation. Wang el al. [15] prepared MnO@MnOx microspheres through the solvothermal process and reported the degradation of levofloxacin under simulated sunlight irradiation. Nanocomposite photocatalytic technology can be considered a green technology and provides the advantages of abundance, including postpone electron-hole recombination, higher photocatalytic activity, and the ability to convert solar energy to chemical energy, which eventually realizes the solution of energy and environmental issues [16][17][18][19][20][21].ZnO is an n-type semiconductor, having a conductivity of about 10 −7 -10 −3 S/cm. It has a relatively large binding energy of 60 meV. However, the main disadvantages of ZnO are its fast electron-hole recombination rate and inefficient utilization of sunlight that lead to a reduction in photodegradation efficiency. The photodegradation performance of ZnO can be increased by modifying ZnO with transition metals [22]. Among the various transition metals, Cu-doped ZnO nanomaterials are of special interest due to the photocatalytic efficiency enhancement that creates defects in the lattice and reduces the recombination of photogenerated charge carriers [23]. Cu also provides plenty of advantages, such as low cost, more electronegativity than zinc, and a similar atomic size to that of zinc, and leads to better doping efficiency [24]. CuO is a natural p-type semiconductor with a narrow band gap, having a conductivity of 10 −4 ...

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“…These pores were created during the synthesis due to the escaping of gases at higher temperatures. The pores were uniformly formed and looks like a honeycomb like structures [31][32][33]. Figure 9 shows the TEM images, HR-TEM.images and SAED pattern of synthesized Ag-ZnO porous nanomaterials using Azardichta indica gum as a fuel by combustion method.…”

Section: Sem Studiesmentioning

confidence: 99%

Highly porous, honeycomb like Ag–ZnO nanomaterials for enhanced photocatalytic and photoluminescence studies: green synthesis using Azadirachta indica gum

Basavalingiah

Harishkumar

Udayabhanu³

et al. 2019

SN Appl. Sci.

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The preparation of zinc oxide and silver doped zinc oxide nanoparticles using zinc nitrates and silver nitrates as oxidizers and Azadirachta indica gum as a fuel via solution combustion method at 500 °C. The synthesized nanoparticles were characterized by XRD, FTIR, UV-DRS, SEM and TEM studies; these materials were tested for photoluminescence and photocatalytic activity studies. The PXRD data indicated that the synthesized nanoparticles confirmed as hexagonal phase with average crystallite size of 13.33 and 13.34 nm for ZnO and Ag-ZnO respectively. The SEM data revealed that, the material obtained is highly porous and honeycomb like structure. In the photocatalytic degradation of methylene blue, Ag-ZnO nanoparticles have shown the good photocatalytic activity than undoped ZnO nanoparticles. This is due to the presence of Ag on the surface of ZnO catalyst makes the catalyst more sensitive to light and reduce the electron hole recombination. Furthermore, we have also examined the photoluminescence studies for the synthesized materials and it has given the green emission by excitation at 380 nm. In this study, the green synthesis method will produces large quantity of nanomaterials with less time and low cost.

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Synthesis and characterization of ZnO–CuO nanocomposites powder by modified perfume spray pyrolysis method and its antimicrobial investigation

Cited by 155 publications

References 47 publications

The studies of cytotoxicity and antibacterial activity of composites with ZnO‐doped bioglass

The studies of cytotoxicity and antibacterial activity of composites with ZnO‐doped bioglass

Synthesis of CuO/ZnO Nanocomposites and Their Application in Photodegradation of Toxic Textile Dye

Highly porous, honeycomb like Ag–ZnO nanomaterials for enhanced photocatalytic and photoluminescence studies: green synthesis using Azadirachta indica gum

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