The high impact of zinc chromium oxide nanocombs on development of larvicidal and antimicrobial performance
Wageha A. Mostafaa, Soad A. Elshanawanyb, Khadejah D. Otaifc, Mona M. Khalifad, Elsayed Elgazzare f✉
- aEntomolgy Section, Zoology Department, Faculty of Science, Zagazig University, Zagazig, Egypt
- bPhysics Department, Jazan University, 86736, Jazan, Saudi Arabia
- cDepartment of Chemistry, Samtah University College, Jazan University, 86736, Jazan, Saudi Arabia
- dBiochemistry department, Faculty of Science, Cairo University, Cairo, Egypt
- eDepartment of Physics, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt. elsayed.elgazzar@yahoo.com
- fDepartment of Physics, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
- ✉Corresponding author
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Abstract
Abstract Zinc chromium oxide (Cr/ZnO, 5wt.%) was prepared by a facile chemical co-precipitation route. The structure, composition, and chemical bonding were analyzed using X-ray diffraction (XRD), Energy dispersive X-ray spectroscopy (EDX), and Fourier-transform infrared spectroscopy (FTIR) indicating that chromium ions were integrated the host framework to form Cr/ZnO nanocomposite. Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) micrographs showed comb-shaped nanoparticles with an average size 20 nm and large surface area. The energy gap of the thin films was estimated from T% and R% measurements which exhibit a strong optical absorption edge close to the visible spectrum. The insecticidal activity of the synthesized nanocombs against C. pipiens larvae was evaluated with LC50 (30.15 ppm) and LC90 (100.22 ppm). Besides, the nanocomposite showed high antibacterial performance against gram-positive bacteria (Bacillus subtilis) and gram-negative bacteria (Proteus vulgaris) with inhibition zones 21.9 and 19 mm, respectively.
TL;DRThe nanocomposite showed high antibacterial performance against gram-positive bacteria (Bacillus subtilis) and gram-negative bacteria (Proteus vulgaris) with inhibition zones 21.9 and 19 mm, respectively. (Semantic Scholar)