Synthesis of hydroxyapatite nanoparticles from egg shells by sol-gel method

2nd International Conference on Oleo and Petrochemical Engineering

Azis, Y.^1 ; Adrian, M.^1 ; Alfarisi, C.D.^1 ; Khairat^1 ; Sri, R.M.^1

Department of Chemical Engineering, Riau University, Pekanbaru

28293, Indonesia^1

关键词: Basic conditions;    Hexagonal structures;    Hydroxyapatite crystals;    Hydroxyapatite nanoparticles;    Medical fields;    Mole ratio;    Precipitated calcium carbonate;    XRD patterns;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/345/1/012040/pdf
DOI  :  10.1088/1757-899X/345/1/012040

来源: IOP

【 摘 要 】

Hydroxyapatite, [Ca10(PO4)6(OH)2, (HAp)] is widely used in medical fields especially as a bone and teeth substitute. Hydroxyapatite nanoparticles have been succesfully synthesized from egg shells as a source of calcium by using sol-gel method. The egg shells were calcined, hydrated (slaking) and undergone carbonation to form Precipitated Calcium Carbonate (PCC).Then the PCC was added (NH4)2HPO4to form HAp with variation the mole ratio Ca and P (1.57; 1.67 and 1.77), aging time (24, 48, and 72 hr) and under basic condition pH (9, 10 and 11). The formation of hydroxyapatite biomaterial was characterized using XRD, FTIR, SEM-EDX. The XRD patterns showed that the products were hydroxyapatite crystals. The best result was obtained at 24 hr aging time, pH 9 with hexagonal structure of hydroxyapatite. Particle size of HAp was 35-54 nm and the morphology of hydroxyapatite observed using SEM, it showed that the uniformity crystal of hydroxyapatite.