Sintesis Nanopartikel Mg-CoFe3O4 dari Limbah Industri Ubin Keramik sebagai Material Fotokatalis

RIZKI ADITYAWAN MAULANA (Jurusan Kimia Fakultas Sains dan Teknologi, UIN Sunan Gunung Djati Bandung)
EKO PRABOWO HADISANTOSO (Jurusan Kimia Fakultas Sains dan Teknologi, UIN Sunan Gunung Djati Bandung)
RIZKY BERLIANA WIJAYANTI (Balai Besar Keramik, Bandung)
FERRY ARIFIADI (Balai Besar Keramik, Bandung)
KRISTANTO WAHYUDI (Balai Besar Keramik, Bandung)

Gunung Djati Conference Series
Vol. 15 (2022): Prosiding Seminar Nasional Kimia Tahun 2022

The ceramic industry produces iron oxide waste which can be used as a photocatalyst material to degrade methylene blue (MB) dye. Iron oxide waste mostly contains Fe2O3. In this study, Fe3O4 was synthesized from ceramic tile industrial waste with the addition of Na-Citra to reduce Fe2O3 to Fe3O4 using the solid state method. Fe3O4 (magnetite) material improved its photocatalytic performance by adding Mg2+ and Co2+ dopants to form MgxCo1-xFe3O4 (MCM) with a fraction x = 0.03; 0.05 and 0.07 are written as MCM-1, MCM-2, and MCM-3 by the solid state method. XRD results show that Fe3O4, MCM-1, MCM-2, MCM-3 have spinel cubic shape which is compatible with Fe3O4 phase and still contains Fe2O3 impurities. The crystal sizes obtained for Fe3O4, MCM-1, MCM-2, MCM-3 were 39.61; 34.42; 41.28; 32.11 nm. The smaller the crystal size, the better the photocatalyst degradation. SEM results showed that Fe3O4, MCM-1, MCM-2, and MCM-3 samples had a spherical cubic morphology and agglomeration occurred with particle sizes ranging from 126.05 to 149.50 nm. The SEM results show that the more Mg2+ added, the smaller the agglomeration that occurs. The results of UV-DRS show that the addition of Mg2+ dopants can reduce the band gap from 2.02 to 1.95 eV. With the results obtained, the material that has been successfully synthesized can be used as a photocatalyst material.