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 LC 50 (30.15 ppm) and LC 90 (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.
Keyphrases
- electron microscopy
- quantum dots
- reduced graphene oxide
- oxide nanoparticles
- solid phase extraction
- visible light
- bacillus subtilis
- high resolution
- gold nanoparticles
- aedes aegypti
- simultaneous determination
- room temperature
- staphylococcus aureus
- mass spectrometry
- photodynamic therapy
- gram negative
- gas chromatography mass spectrometry
- highly efficient
- tandem mass spectrometry
- essential oil
- liquid chromatography
- aqueous solution
- gas chromatography
- magnetic resonance imaging
- computed tomography
- high speed
- high resolution mass spectrometry