Abstract Paper
| Title | : Effect of temperature on the structural and optical properties of Zinc Oxide nanoparticles prepared using Green synthesis method |
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| Author(s) | : S.Rajesh, K.Thyagarajan |
| Article Information | : Volume 2 - Issue 1 (June - 2018) , 31-34 |
| Affiliation(s) | : Department of Physics, JNTUA College of Engineering, Pulivendula- 516390, Y.S.R.District, Andhra Pradesh, India |
Abstract :
Green technology for nanoparticles’ synthesis is gaining a substantial interest among researchers as an eco-friendly technique to eliminate the employment of nephrotoxic chemicals. The present study reports the fabrication of Zinc oxide nanoparticles (ZnO-NPs) using Betel leaf extract and Zinc acetate synthesized by Co-Precipitation method in different temperatures (400 °C & 500 °C). The betel leaf assisted ZnO particles were investigated through X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDS) ans Photoluminescence (PL) studies. Hexagonal (wurtzite) shaped ZnO-NPs with average size of 50 nm were synthesized. EDS showed the chemical compositions (Zn, O) ZnO NPs. At the room temperature, PL spectra of ZnO Nano crystalline particles was measured at an excitation wavelength of 329 nm. Annealing at 400 °C and 500 °C emission wavelength showed two weak violet peaks (416 nm & 437 nm). As the temperature was increased from 400 °C to 500 °C, the violet peaks in the emission spectra disappeared and strong blue emission was modified to strong super blue band at 461 nm. This is useful to blue LEDs applications.
| Keywords | : ZnO-NPs, Green synthesis, Characterization Analysis (XRD, SEM, EDS, PL),Temperature effect. |
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| Document Type | : Research Paper |
| Publication date | : June 08, 2018 |