Synthesis of Nano-Calcium Oxide from Waste Eggshell by Sol-Gel Method
| Autor: | Dure Mulatu, Natnael Shiferaw, Ramakrishna Chilakala, Ji-Whan Ahn, Thriveni Thenepalli, Lulit Habte |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Scanning electron microscope Geography Planning and Development lcsh:TJ807-830 lcsh:Renewable energy sources chemistry.chemical_element Nanoparticle 02 engineering and technology Management Monitoring Policy and Law Calcium 010402 general chemistry 01 natural sciences chemistry.chemical_compound sol-gel method Fourier transform infrared spectroscopy Eggshell Calcium oxide lcsh:Environmental sciences Sol-gel lcsh:GE1-350 Renewable Energy Sustainability and the Environment lcsh:Environmental effects of industries and plants eggshell 021001 nanoscience & nanotechnology 0104 chemical sciences Calcium carbonate lcsh:TD194-195 chemistry Chemical engineering 0210 nano-technology calcium oxide nanoparticle |
| Zdroj: | Sustainability, Vol 11, Iss 11, p 3196 (2019) Sustainability Volume 11 Issue 11 |
| ISSN: | 2071-1050 |
| Popis: | The sol-gel technique has many advantages over the other mechanism for synthesizing metal oxide nanoparticles such as being simple, cheap and having low temperature and pressure. Utilization of waste materials as a precursor for synthesis makes the whole process cheaper, green and sustainable. Calcium Oxide nanoparticles have been synthesized from eggshell through the sol-gel method. Raw eggshell was dissolved by HCl to form CaCl2 solution, adding NaOH to the solution dropwise to agitate Ca (OH)2 gel and finally drying the gel at 900 ° C for 1 h. The synthesized nanoparticle was characterized by scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), X-Ray fluorescence (XRF) and X-ray diffraction (XRD). The FTIR and XRD results have clearly depicted the synthesis of calcium oxide from eggshell, which is mainly composed of calcium carbonate. The FE-SEM images of calcium oxide nanoparticles showed that the particles were almost spherical in morphology. The particle size of the nanoparticles was in the range 50 nm&ndash 198 nm. Therefore, waste eggshell can be considered as a promising resource of calcium for application of versatile fields. |
| Databáze: | OpenAIRE |
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