This paper reports the use of Simbang Darah (Iresine herbstii) leaf extract to synthesize ZnFe2O4 spinel ferrite nanoparticles via hydrothermal method. Biochemical compounds in Simbang Darah leaf extract act as a capping agent and a stabilizer to form nanostructures. XRD patterns and FTIR spectrums confirm the formation of the cubic spinel crystal structure of ZnFe2O4 nanoparticles. SEM and TEM characterization revealed that ZnFe2O4 spinel ferrite morphology has a uniform spherical shape in nanoscale. EDX results showed that the compositional mass ratios were relevant as expected from the synthesis. ZnFe2O4 nanoparticles have an absorption edge in the visible region with Eg values within the range 2.05-2.11 eV in the DRS UV-Vis analysis. The as-prepared samples exhibit paramagnetic behavior according to the magnetic hysteresis curve. ZnFe2O4 nanoparticles were proven effective in direct red 81 dye photodegradation (99.66%) after exposure to solar light irradiation for two hours. On top of that, ZnFe2O4 nanoparticle exhibited antibacterial activity against S. aureus and E. coli.
- Direct red 81
- Iresine herbstii