Journal
MATERIALS TECHNOLOGY
Volume 34, Issue 7, Pages 403-414Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10667857.2019.1574963
Keywords
Nanocomposite; ultrasonic-assisted method; photocatalytic and antibacterial studies
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Funding
- UGC, New Delhi under UGC-BSR fellowship
- UGC-BSR fellowship
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CdO and MgO nanoparticles and CdO-MgO nanocomposite were synthesised and investigated by XRD, FESEM(Field emission scanning electron microscopy) with EDS(Energy dispersive X-ray spectroscopy) and Fourier-transform infrared (FTIR). XRD(X-ray diffraction) shows a cubic structure with an average crystallite size of 44 (CdO), 37 (MgO) and 32 nm (CdO-MgO). FTIR indicates the characteristic vibrational frequencies as Cd-O (460 cm(-1)), Mg-O (505 cm(-1)) and CdO-MgO (698 and 512 cm(-1)). From the UV-Vis spectra, the band gap is estimated. From the cyclic voltammetry measurements, the redox potential is 1.27 (CdO), 1.24 (MgO) and 1.16 V (CdO-MgO). The photocatalytic degradation study of ultrasonic-assisted CdO and MgO nanoparticles and CdO-MgO nanocomposite was investigated against the alizarin red S dye under natural solar light irradiation. The antibacterial activity against food-borne pathogens was tested against gram-positive bacteria (Micrococcus luteusand Rhodococcus rhodochrous) and gram-negative bacteria (Vibriocholerae, Klebsiella pneumoniae, Aeromonas hydrophila and E. coli).
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