<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>In this work, NiO–ZnOnanocomposite (NC)was prepared through a facile, low-temperature,sol–gel route. Zinc acetate dihydrate, nickel chloride hexahydrate, cetyltrimethyl ammonium bromide (CTAB), and citric acid were used in the synthesis of the material. Then, the sample was kept in the muffle furnace at a temperature of 600°C for 2 h. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), UV–Visible spectroscopy, and photocatalytic and antifungal investigations were used to characterize the synthesized nanocrystallites. The XRD data showedthe polycrystalline hexagonal ZnO nanoparticles and cubic NiO crystallites. FTIR studies confirmed the presence of Zn-O and Ni-O bonds in the sample. The FESEM analysis showed the morphology of nanocrystallitescharacterized by their homogeneous shape and size. The absorbance curves from the UV–Visible spectroscopy investigation revealed the bandgap of 3.17 eV. The research findings demonstrate that the NiO–ZnO NC possesses the significant level of selected microbial pathogens. Industrial dyesmake water unhealthy for drinking. Among these dyes, methylene blue (MB) is toxic, carcinogenic, and non-biodegradable, and causes a severe threat to human health and environmental safety. Hence, it is necessary to develop efficient and environmentally friendly technology to remove MB from wastewater. The ZnO–NiO NC degraded the MB dye pollutant under visible irradiation (125 W), according to photocatalytic tests. After 120 min of exposure, the photocatalytic investigations demonstrated 75% degradation efficiency.</p>
</abstract>

In this work, NiO–ZnOnanocomposite (NC)was prepared through a facile, low-temperature,sol–gel route. Zinc acetate dihydrate, nickel chloride hexahydrate, cetyltrimethyl ammonium bromide (CTAB), and citric acid were used in the synthesis of the material. Then, the sample was kept in the muffle furnace at a temperature of 600°C for 2 h. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), UV–Visible spectroscopy, and photocatalytic and antifungal investigations were used to characterize the synthesized nanocrystallites. The XRD data showedthe polycrystalline hexagonal ZnO nanoparticles and cubic NiO crystallites. FTIR studies confirmed the presence of Zn-O and Ni-O bonds in the sample. The FESEM analysis showed the morphology of nanocrystallitescharacterized by their homogeneous shape and size. The absorbance curves from the UV–Visible spectroscopy investigation revealed the bandgap of 3.17 eV. The research findings demonstrate that the NiO–ZnO NC possesses the significant level of selected microbial pathogens. Industrial dyesmake water unhealthy for drinking. Among these dyes, methylene blue (MB) is toxic, carcinogenic, and non-biodegradable, and causes a severe threat to human health and environmental safety. Hence, it is necessary to develop efficient and environmentally friendly technology to remove MB from wastewater. The ZnO–NiO NC degraded the MB dye pollutant under visible irradiation (125 W), according to photocatalytic tests. After 120 min of exposure, the photocatalytic investigations demonstrated 75% degradation efficiency.

Microstructural, antifungal and photocatalytic activity of NiO–ZnO nanocomposite

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

In this work, NiO–ZnOnanocomposite (NC)was prepared through a facile, low-temperature,sol–gel route. Zinc acetate dihydrate, nickel chloride hexahydrate,...

S.No	Test organism/Fungai	Zone of inhibition (mm)
S.No	Test organism/Fungai	Standard	250 μg	500 μg	750 μg	1,000 μg
1	A. niger(E)	10 ± 1.00	12 ± 1.10	14 ± 1.20	15.5 ± 1.20	17 ± 1.30
2	A. flavus(D)	10 ± 0.8	12.4 ± 1.0	15 ± 1.10	16.0 ± 1.2	18 ± 1.2
3	A.fumigatus(C)	8 ± 0.6	10.0 ± 0.8	11.5 ± 1.0	13 ± 1.1	14 ± 1.2
4	C. albicans (B)	10 ± 0.9	12 ± 1.0	14 ± 1.1	15.5 ± 1.2	17 ± 1.2
5	Mucor sp.(A)	10 ± 0.8	12.5 ± 1.0	14.5 ± 1.2	16 ± 1.3	17 ± 1.4

Microstructural, antifungal and photocatalytic activity of NiO–ZnO nanocomposite

Publié en ligne: 31 mai 2024

Pages: 107 - 115

Reçu: 28 déc. 2023

Accepté: 11 avr. 2024

DOI: https://doi.org/10.2478/msp-2024-0006

Mots clés
antifungal, microstructure, NiO–ZnO-nanocomposite, optical properties, pathogens, photocatalytic

© 2024 Yixuan Wang et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Shows that MIC of flucanazole and NiO–ZnO NC

Microstructural, antifungal and photocatalytic activity of NiO–ZnO nanocomposite

Publié en ligne: 31 mai 2024

Pages: 107 - 115

Reçu: 28 déc. 2023

Accepté: 11 avr. 2024

DOI: https://doi.org/10.2478/msp-2024-0006

Mots clésantifungal, microstructure, NiO–ZnO-nanocomposite, optical properties, pathogens, photocatalytic

© 2024 Yixuan Wang et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Shows that MIC of flucanazole and NiO–ZnO NC

Mots clés
antifungal, microstructure, NiO–ZnO-nanocomposite, optical properties, pathogens, photocatalytic