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
- solid phase extraction
- oxide nanoparticles
- visible light
- bacillus subtilis
- high resolution
- gold nanoparticles
- simultaneous determination
- room temperature
- staphylococcus aureus
- liquid chromatography
- mass spectrometry
- gram negative
- high speed
- highly efficient
- gas chromatography mass spectrometry
- tandem mass spectrometry
- aqueous solution
- single molecule
- silver nanoparticles
- magnetic resonance
- light emitting
- photodynamic therapy
- multidrug resistant
- water soluble