Studi Pengaruh Suhu Sintesis Hidrotermal Terhadap Ukuran Kristal dan Kristalinitas Oksida Logam Piroklor Fe2Zr2O7

ABSTRACT− Rapid industrial development is accompanied by the development of electronic devicesand high energy consumption. One material that is ferroelectric and can be used as a catalyst to reduceenergy use is pyrochlor metal oxide. Pyrochlore metal oxide attracts the attention of researchers due toits unique physical properties. This study aims to synthesize pyrochlore metal oxide (Fe2Zr2O7) usingFe2O3 precursor derived from natural iron ore and ZrO2 compound. Characterization was carried outusing X-ray Diffraction (XRD) to determine crystallinity and the Debye Scherrer equation to determinethe crystal size of the Fe2Zr2O7 structure. This synthesis was carried out with a variety of heatingtemperatures, namely 150 °C, 180 °C and 200 °C for 5 hours. The results showed that the threediffractograms of the synthesized structure had similarities with the Fe2Zr2O7 diffractogram. TheFe2Zr2O7 pyrochlore oxide synthesized at 150°C has intensity, FWHM, and area values of 661,40; 0,26;and 0,17, respectively. Fe2Zr2O7 pyrochlore oxide synthesized at 180°C has intensity, FWHM, and areavalues of 4174, 0,03; and 0,02, respectively. The synthesized Fe2Zr2O7 pyrochlore oxide with atemperature variation of 200 °C has an intensity value, FWHM, and area of 652,40; 0,22; and 0,14,respectively. The crystal size of the synthesized Fe2Zr2O7 pyrochlore oxide of 180 °C temperaturevariation is 394,66 nm, while the crystal size of the synthesized Fe2Zr2O7 pyrochlore oxide of 150 °C and200 °C temperature variations are 32,78 nm and 34,33 nm, respectively.KEYWORD: Pyrochlore metal oxide, Fe2Zr2O7, ZrO2, Fe2O3, ferroelectric, catalyst,hydrothermal.