Abstract
In the present investigation, MnxZn1-xO (x = 0.05, 0.075 and 0.1%) nanoparticles have been synthesized by simple precipitation method. Their structural, morphological and optical properties were examined by using X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Energy dispersive X-ray spectroscopy (EDX), High resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, Differential scanning calorimetry (DSC) and UV-Visible spectroscopy. The Powder X-ray diffraction studies confirmed that the manganese doped ZnO have a single phase nature with hexagonal wurtzite structure and Mn successfully incorporated into the lattice position of Zn in ZnO lattice. The FESEM and HRTEM images are coincided with each other for aggregation of particles in nature. The elemental analysis of doped samples has been evaluated by EDX. The antibacterial activity of Mn doped ZnO nanoparticles has also been examined.
Highlights
Large number of investigations has focused on transitional metals such as La, Fe, Pd and Mn doped ZnO nanoparticles, due to its direct band gap of 3.37 eV at room temperature with large excitation binding energy of 60 meV [1]
The elemental analysis was carried out by using energy dispersive X-ray spectroscopy (EDX).The composition quality of the synthesized material is characterized by Fourier transform infrared Thermo Nicolet 6700 FT-IR spectrophotometer in the range of 400 to 4000 cm-1.The Raman spectra have been recorded with a JASCO NRS 3300 spectrophotometer
The X-ray diffraction (XRD) pattern of Mn doped samples show no much change when compared with the pattern of un-doped sample, which confirms that there is no additional phase formation but there is a small shift to larger angle compared to pure ZnO diffraction pattern
Summary
Large number of investigations has focused on transitional metals such as La, Fe, Pd and Mn doped ZnO nanoparticles, due to its direct band gap of 3.37 eV at room temperature with large excitation binding energy of 60 meV [1]. Compared with all other metal oxides, it is abundant in nature and eco - friendly These characteristics make this material attractive for many applications such as solar cells, optical coatings, photocatalysts, antibacterial activities, electrical devices, active medium in UV semiconductor lasers and gas sensors [2]. It has influenced the attention of researchers and scientists to develop ZnO in the field of science and technology. The antibacterial activity of the various concentrated (0.05, 0.075 and 0.1%) Mn doped ZnO nanoparticles have been examined
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