Effect of aluminium doping on structural, optical, photocatalytic and antibacterial activity on nickel ferrite nanoparticles by sol–gel auto-combustion method
| Autor: | G. Nagaraju, S. K. Rashmi, M. Madhukara Naik, K. Vinu, M. Vinuth, H. S. Bhojya Naik |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Spinel chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Nanocrystalline material 0104 chemical sciences Electronic Optical and Magnetic Materials Lattice constant chemistry Aluminium engineering Crystallite Electrical and Electronic Engineering 0210 nano-technology High-resolution transmission electron microscopy Luminescence Nuclear chemistry Visible spectrum |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 29:20395-20414 |
| ISSN: | 1573-482X 0957-4522 |
| Popis: | The present work designates the preparation of nanocrystalline nickel ferrite and aluminium-doped nickel ferrite nanoparticles with general formula NiAlxFe2−xO4 (x = 0–0.7) prepared by the sol–gel auto-combustion method. The structural (XRD and FTIR), morphological (SEM with EDAX, HRTEM with SAED) and optical (UV–Visible DRS and Luminescence spectroscopy) properties of the products were characterized. XRD studies revealed the formation of the single phase with a cubic spinel structure with an average crystallite size varies between 19 and 38 nm. The increase in aluminium content caused the variation in the lattice parameter (8.2782–8.3366 A). SEM images shows the morphology have nanocrystalline behavior with a spherical structure. FTIR represents the characteristic peaks of M–O vibrations in tetrahedral (~ 591 cm−1) and octahedral (~ 398 cm−1) sites. From the UV–Vis DRS spectra, the band gap is decreasing with increasing doping, estimated to be 2.03–1.90 eV. The luminescence spectrum displays violet, blue, green, and orange emission. The aluminium-doped nickel ferrite nanoparticles act as an exceptional photocatalyst for the degradation of rose bengal dye (99.8% in 150 min) with respect to bulk material (63% in 150 min) under visible light (300 W tungsten lamp) irradiation. Furthermore, these nanoparticles were acted against gram-negative bacteria stain (Salmonella typhi, Pseudomonas aeruginosa, and Escherichia coli). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink