Particle size and crystal morphology play important roles in these applications, which have driven the attention of researchers on the synthesis of nanocrystalline ZnO. Moreover, the ZnO content in vulcanized rubber can be reduced to 10 times if nanosized ZnO is used instead of the conventional micro ZnO, and this approach helps to reduce the release of toxic zinc metal into the environment.
Xray diffraction peak table Activator#
Recent reports from our lab revealed that ZnO nanoparticles can be used as reinforcing agent in polymers, activator and accelerator instead of micro ZnO in the vulcanization of rubber materials, for producing highly stable and improved properties of the final products. Recently, ZnO has gained interest for spintronic applications due to its ferromagnetic behavior at room temperature when doped with transition metals. The large exciton binding energy of ZnO allows an intense near-band-edge excitonic emission at room temperature and higher temperatures. in gas sensors, ceramics, field-emission devices and luminescent materials. It has wide band gap energy (3.37 eV), large exciton binding energy and excellent chemical stability all these properties suggest a great possible practical applications viz. Zinc oxide (ZnO) is a wide band gap semiconductor, which has been studied extensively due to its fundamental and technological importance. GaN, ZnO, InN, AlN, have gained more attention among semiconductor materials, because of their potential application in optoelectronic devices in both the visible and UV regions, such as light emitting diodes (LEDs) and laser diodes. Both methods, the X-ray diffraction and Transmission electron microscopy, provide less deviation between crystallite size and particle size in the present case. The results showed that the crystallite size estimated from Scherrer’s formula, Williamson–Hall plots and size–strain plot, and the particle size estimated from Transmission electron microscopy analysis are very much inter-correlated. The parameters including strain, stress and energy density value were calculated for all the reflection peaks of X-ray diffraction corresponding to wurtzite hexagonal phase of ZnO lying in the range 20°–80° using the modified form of Williamson–Hall plots and size–strain plot. The Williamson–Hall analysis and size–strain plot were used to study the individual contributions of crystallite sizes and lattice strain ϵ on the peak broadening of ZnO nanoparticles. We have investigated the crystallite development in ZnO nanoparticles by X-ray peak profile analysis. The X-ray diffraction results revealed that the sample was crystalline with a hexagonal wurtzite phase. The synthesized ZnO nanoparticles were characterized by Fourier transform infrared spectroscopy, X-ray diffraction peak profile analysis, Scanning electron microscopy, Transmission electron microscopy and Photoluminescence. ZnO nanoparticles were synthesized from chitosan and zinc chloride by a precipitation method.
0 kommentar(er)
