Synthesis of Magnesium-Hydroxyapatite Crystal via microwave irradiation

F. N. Hariowibowo, Nurlely, Y. W. Sari

Research output: Contribution to journalConference articlepeer-review


Magnesium-Hydroxyapatite (MgHA) is synthesized by substituting magnesium (Mg) into hydroxyapatite (HA). The study's aim was to synthesize MgHA nano-powder via microwave irradiation and determine the effects of the microwave irradiation's power and irradiation time variation on the synthesis of the MgHA crystal. The synthesis of MgHA was done by titrating solutions of diammonium hydrogen phosphate and magnesium hydroxide into a solution of calcium hydroxide. The microwave irradiation was done with variations of irradiation power and time. The phase composition, functional groups, morphology, particle size, and the element composition of the MgHA powder was evaluated using the following characterization method; XRD, FTIR, and SEM-EDX. The XRD patterns show that lattice parameters a and c, crystallinity index, and crystallite size of MgHA decreases as the irradiation time increases. The FTIR results show that a stretching mode is caused by the bonding of Mg2+ and the hydroxyl group. The SEM and EDX results shows that the substitution of Mg2+ causes the particles to agglomerate and the Ca/P value of MgHA was determined to be lesser than 1.67, showing that some Ca2+ was released from the apatite. The results show that higher irradiation power and longer irradiation time is more effective in MgHA synthesis.

Original languageEnglish
Article number012077
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 6 Jun 2019
Event18th Asia-Oceania Congress of Medical Physics, AOCMP 2018 and 16th South-East Asia Congress of Medical Physics, SEACOMP 2018 - Bangsar South, Kuala Lumpur, Malaysia
Duration: 11 Nov 201814 Nov 2018


  • Biomaterial
  • Hydroxyapatite
  • Magnesium
  • Microwave Irradiation


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