Nano-Hydroxyapatite Prepared from Eggshell-Derived Calcium-Precursor using Reverse Microemulsions as Nanoreactor
| Autor: | M. Yousuf A. Mollah, SA Jahan, Md. Abu Bin Hasan Susan, Samina Ahmed |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Aqueous solution Cyclohexane 02 engineering and technology Nanoreactor 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Chemical engineering chemistry Dynamic light scattering law Phase (matter) Organic chemistry Calcination Microemulsion Particle size 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 4:5497-5506 |
| ISSN: | 2214-7853 |
| Popis: | Nano-hydroxyapatite (nano-HAP) has been, for the first time, successfully synthesized at ambient temperature from eggshell-derived Ca-precursor using reverse microemulsions. Water-in-oil microemulsions, prepared with cyclohexane, water, 1-pentanol and a non-ionic surfactant, Triton X-100 served as template to prepare nano-HAP from Ca-acetate derived from the bio-waste. Nano-HAP, thermally treated at 100, 300, and 600 °C were used to investigate the phase properties by x-ray diffraction patterns and formation of HAP phase could be confirmed. Particle size analyzed by dynamic light scattering measurements show that the microemulsions were nanodroplets and served as nanoreactor to yield HAP of nanodimension. The nano-HAP comprises apatitic phosphate and hydroxyl groups and appears in an elongated spherical shape. Calcination of nano-HAP at 600 °C resulted in the formation of β-tricalcium phosphate as the secondary phase. Finally, the potential of nano-HAP as an efficient adsorbent for removal of arsenic(V) and other heavy metals from aqueous solution has been explored. |
| Databáze: | OpenAIRE |
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