Synthesis and Characterization of Fe-ZIF-8 by Utilizing Waste Filtrate as Solvent

Abstract

Fe-ZIF-8 has been successfully synthesized using filtrate as a solvent with two repetitions. The temperature used in the synthesis of Fe-ZIF-8 was room temperature (25-30°C), with a molar ratio of Zn (NO3)2.4H2O and 2-methylimidazole=1:4, while FeSO4.7H2O added was 5% of the amount of Zn (NO3)2.4H2O. The resulting samples were analyzed using XRD and FTIR. The results of the XRD analysis showed that the synthesized Fe-ZIF-8.1 did not have different peaks, compared to the ZIF-8 material. FTIR spectra of Fe-ZIF-8.1 which was synthesized using filtrate also did not have different absorption peaks from ZIF-8, although there were some peaks that had shifted. It indicates that Fe had been doped in ZIF-8 material to replace some of the Zn metal. The use of filtrate as a solvent is one effort to save the environment from the dangers of chemical waste.