Karakteristik Antibakteri Nanoceria-Kitosan yang disintesis menggunakan Metode Presipitasi

Muhammad Danu Rizkia (Departemen Fisika, Fakultas Sain dan Matematika, Universitas Diponegoro ,)
Iis Nurhasanah (Departemen Fisika, Fakultas Sain dan Matematika, Universitas Diponegoro)

INDONESIAN JOURNAL OF APPLIED PHYSICS
Vol 13, No 1 (2023): IJAP Volume 13 ISSUE 01 YEAR 2023

CeO2 nanoparticles (nanoceria) is a material that posseses antibacterial activity. In this study, nanoceria was combined with chitosan to increase its antibacterial property. The formation of nanoceria-chitosan was analyzed using X-ray diffractometer, Fourier Transform Infrared (FTIR) and UV-Vis Spectrophotometer. The antibacterial activity of nanoceria-chitosan was tested using the disc diffusion method on Escherichia coli bacteria. X-ray diffraction pattern analysis showed that nanoceria-chitosan has a cubic structure. The incorporation of chitosan in nanoceria was identified at a wave number of 2919 cm-1 from the FTIR spectrum. Nanoceria-chitosan showed a smaller crystallite size, a larger energy band gap and better antibacterial activity than nanoceria.