Radiation-induced synthesis of copper sulfide nanotubes with improved catalytic and antibacterial activities
In the current paper, copper sulfide nanotubes have been successfully synthesized via the green, simple, and effective gamma-radiolysis method without adding any capping or reducing agents. The structural and morphological characteristics of the as-prepared CuS nanotubes were investigated by X-ray d...
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Veröffentlicht in: | Environmental science and pollution research international 2021-08, Vol.28 (32), p.44467-44478 |
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Sprache: | eng |
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Zusammenfassung: | In the current paper, copper sulfide nanotubes have been successfully synthesized via the green, simple, and effective gamma-radiolysis method without adding any capping or reducing agents. The structural and morphological characteristics of the as-prepared CuS nanotubes were investigated by X-ray diffraction (XRD), N
2
adsorption-desorption measurements at 77 K, transmission electron microscopy (TEM), and ultraviolet-visible (UV-vis) spectroscopy, which all demonstrated the formation of pure CuS covellite phase with tubular morphology. The synthesized CuS nanotubes possessed not only high activity towards the reduction of both cationic (methylene blue) and anionic (Congo red) dyes in the presence of NaBH
4
but also exhibited excellent reusability. In addition, the pseudo-first-order kinetic model represented the reduction of MB very well, and the value of the normalized rate constant (2.4 × 10
−2
s
−1
mg
−1
) was higher than those of other solid catalysts reported in the literature. Ultimately, CuS nanotubes were found to have a broad-spectrum microbicidal action against the common microbiota, such as Gram-positive (exemplified by
Bacillus subtilis
and
Staphylococcus aureus
), Gram-negative bacteria (exemplified by
Pseudomonas aeruginosa
and
Escherichia coli
), yeast (exemplified by
Candida albicans
), and plant pathogenic fungi (exemplified by
Aspergillus niger
). |
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ISSN: | 0944-1344 1614-7499 |
DOI: | 10.1007/s11356-021-13482-9 |