Semiconductor-assisted photodegradation of textile dye, photo-voltaic and antibacterial property of electrochemically synthesized Sr-doped CuO nano photocatalysts

•Sr-doped CuO nanoparticles were prepared by electrochemical method.•The Sr-doped CuO having the monoclinic structutre with bandgap of 3.1 eV and photoactive under sunlight.•The BET surface area and average pore diameter of synthesized Sr-doped CuO are 4.5078E+00 m2/g and 7.2339 nm, respectively.•Th...

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Bibliographic Details
Published in:Journal of molecular structure 2022-09, Vol.1264, p.133110, Article 133110
Main Authors: Uma, Hosaholalu Balakrishna, Kumar, Malahalli S. Vijaya, Ananda, Sannaiah
Format: Article
Language:English
Subjects:
Disc diffusion method
Photo-voltaic
Photodegradation
Sr-doped CuO nanoparticles
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Summary:•Sr-doped CuO nanoparticles were prepared by electrochemical method.•The Sr-doped CuO having the monoclinic structutre with bandgap of 3.1 eV and photoactive under sunlight.•The BET surface area and average pore diameter of synthesized Sr-doped CuO are 4.5078E+00 m2/g and 7.2339 nm, respectively.•The XPS analysis revealed that there are no Cu2O and Cu(OH)2 impurities in the sample and Cu present in +1 state.•Sr-doped CuO can be used as a multifunctional material for photodegradation, photo-voltaic and antibacterial applications. Sr-doped CuO nano photocatalyst has been synthesized by low cost and eco-friendly electrochemical method. The chemical composition, morphology, size, and optical properties were studied by EDAX, XRD, SEM, FT-IR and UV-Vis, PL spectroscopy, XPS and BET analysis. The XRD study revealed that synthesized Sr-doped CuO has a crystallite size of 35.2 nm with a monoclinic structure. The synthesized nanoparticles have a bandgap of 3.1 eV. The photodegradation of methylene blue dye under sunlight indicates that 0.06 g Sr-doped CuO acts as effective catalyst. The antibacterial susceptibility of Sr-doped CuO nanoparticles was evaluated by disc diffusion Kirby-Bauer method using human pathogens Bacillus subtilis (MTCC 121), Pseudomonas aeruginosa (MTCC 183), Salmonella typhi (MTCC 733) showed good bacterial inactivation. The photo-voltaic studies revealed that Sr-doped CuO exhibits lower activity compared to nano ZnO and higher activity compared to commercial ZnO. Sr-doped CuO nanoparticles scavenges .OH and protects methylene blue from further fading which is confirmed by free radical scavenging activity studies. [Display omitted]
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2022.133110