Preparation of Chitosan-Fe3O4 Nanoparticles by In-situ Co-Precipitation Using Tripolyphosphate / Citrate as Crosslinker and Characterization Using XRD

Vita Tria Mardila (Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya)
Akhmad Sabarudin (Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya)
Djoko Herry Santjojo (Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Brawijaya)

Natural B
Vol 3, No 3 (2016)

Chitosan-Fe3O4 nanoparticles have been synthesized in a one pot reaction by combine TPP: citrate as crosslinker. The method was in-situ co-precipitation of iron salts in the presence of chitosan and crosslinker. The aim of this study was to determine the effect of preparation process towards chitosan-Fe3O4 nanoparticles characteristics which was prepared on several preparation condition: chitosan:Fe(II):Fe(III) ratio, TPP:citrate ratio, and crosslinking time. The crystallite sizes of the Fe3O4 and chitosan- Fe3O4 nanoparticles was obtained from modified Debye Scherrer equation using data from XRD analysis. The crystallite size of the bare-Fe3O4 and chitosan-Fe3O4 nanoparticles were found to be about 6.22 and 9.49 nm, respectively. XRD analysis results shown that beside Fe3O4 phases there was γ-Fe2O3 phase due to the oxidation of Fe3O4.The crystallite sizes and the percentage of Fe3O4 decreases with increasing number of chitosan coating the Fe3O4 and the length of crosslinking time