Nanoceramics and novel functionalized silicate-based magnetic nanocomposites as substitutional disinfectants for water and wastewater purification
Herein, we successfully synthesized nano-porous Co 2 O 3 /Cu 2 O 3 : Al 2 O 3 : SiO 2 ((0, 5, 7, 9) Co-CAS) using the acidic sol-gel approach and calcined at 800 °C for 4 h. The crystallization behavior and spectroscopic properties were investigated using X-ray diffraction, field emission-scanning e...
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Published in | Environmental science and pollution research international Vol. 27; no. 21; pp. 26668 - 26680 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer Berlin Heidelberg
01.07.2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Herein, we successfully synthesized nano-porous Co
2
O
3
/Cu
2
O
3
: Al
2
O
3
: SiO
2
((0, 5, 7, 9) Co-CAS) using the acidic sol-gel approach and calcined at 800 °C for 4 h. The crystallization behavior and spectroscopic properties were investigated using X-ray diffraction, field emission-scanning electron microscopy, and Fourier-transform infrared absorption spectra analysis. The antibiotic properties of the nano-porous CAS, 5Co-CAS, and 9Co-CAS magnetic nanocomposites was studied against some potentially pathogenic bacteria in water and wastewater samples. The bacteria tested included
Escherichia coli
,
Salmonella enterica
,
Pseudomonas aeruginosa
,
Listeria monocytogenes
,
Staphylococcus aureus
,
Enterococcus faecalis
, and
Bacillus subtilis
. Incorporating Co
2
O
3
resulted in the identification of three peaks at 2θ = 10.2°, 13.4°, and 15°. The introduction of cobalt nanoparticles created a ferromagnetic behavior in the CAS nanoceramic, with the magnetic moment and saturation values increasing with increased Co
2
O
3
doping. 9Co-CAS was most potent against all the tested pathogens with minimum inhibitory concentrations of 25 mg/L within 40 min for
E. coli
and
P. aeruginosa
and 50 mg/L within 10 min for
S. enterica
; the lowest antibacterial activity was observed with the unmodified CAS. The findings revealed that the manufactured nanocomposite materials were potent disinfectants with a promising application for water and wastewater treatment. |
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ISSN: | 0944-1344 1614-7499 |
DOI: | 10.1007/s11356-020-09073-9 |