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Copper oxide–ferric oxide nanocomposite: Synthesis, characterization, and antibacterial and antifungal properties

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08 nov 2024

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Figure 1

XRD pattern of the prepared nanoparticles; CuO, Fe2O3, and the NC CuO/Fe2O3.
XRD pattern of the prepared nanoparticles; CuO, Fe2O3, and the NC CuO/Fe2O3.

Figure 2

FTIR spectrum of the prepared NC (CuO/Fe2O3).
FTIR spectrum of the prepared NC (CuO/Fe2O3).

Figure 3

EDX analysis of the obtained NC (CuO/Fe2O3).
EDX analysis of the obtained NC (CuO/Fe2O3).

Figure 4

TEM micrograph of the obtained NC (CuO/Fe2O3).
TEM micrograph of the obtained NC (CuO/Fe2O3).

Hyphal growth response of the fungal isolates to series concentrations of CuO/Fe2O3-NCcompared to copper formate after 7 days of incubation_

Concentrations (µg/mL) Growth response (diameter [mm] ± SD1; inhibition [%])
Fusarium oxysporum Botrytis cinerea Rhizoctonia solani
(OR116510) (OR116494) (OR116531)
25 29.3 ± 0.58b 67.4 53.7 ± 4.04b 40.4 19.7 ± 0.58b 78.2
50 28.0 ± 1.73b,c 68.9 50.0 ± 0.00b,c 44.4 18.0 ± 0.00c 80.0
75 26.3 ± 1.53c,d 70.7 46.3 ± 1.15c,d 48.5 18.0 ± 0.00c 80.0
100 26.0 ± 0.00d 71.1 45.0 ± 3.00d 50.0 17.0 ± 0.00d 81.1
−ve control2 90.0 ± 0.00a 0.00 90.0 ± 0.00a 0.00 90.0 ± 0.00a 0.00
+ ve control3 25.7 ± 1.15d 71.5 46.7 ± 0.58 cd 48.5 16.0 ± 1.00e 82.2

Calculated crystal sizes of the obtained quantum dot_

Peak 2Ɵ Plane FWHM Size (nm)
1 35.61 −111 (CuO) 1.235 7
2 43.37 400 (CuO/Fe2O3) 0.7399 12
3 44.73 −112 (CuO) 0.842 10.6
4 31.25 110 (CuO) 0.963 9

Inhibition zone of the bacterial isolates to series concentrations of CuO/Fe2O3-NC compared to gentamicin_

Concentrations (µg/mL) Inhibition zone (diameter [mm] ± SD1)
P. carotovorum S. scabies P. atrosepticum R. solanacearum
10 11.0 ± 0.00b 9.00 ± 0.00b 9.00 ± 0.00c 10.7 ± 0.58d
20 11.0 ± 0.00b 9.00 ± 0.00b 9.00 ± 0.00c 11.0 ± 0.00d
30 11.7 ± 0.58b 9.00 ± 0.00b 9.00 ± 0.00c 11.0 ± 0.00d
40 11.7 ± 0.58b 9.00 ± 0.00b 9.33 ± 0.58c 12.0 ± 0.00c
50 12.3 ± 1.15b 9.00 ± 0.00b 10.7 ± 0.58b 14.7 ± 0.58b
−ve control2 0.00 ± 0.00c 0.00 ± 0.00c 0.00 ± 0.00d 0.00 ± 0.00e
+ ve control3 19.0 ± 1.73a 41.7 ± 2.89a 16.00 ± 1.73a 25.0 ± 0.00a