Lanthanum Doped Zinc Molybdate: Antibacterial and Photo-Catalysis Properties

This study investigates unique and specific properties of the lanthanum based zinc molybdate nanocompos-ite material. The lanthanum zinc molybdate nanocomposite material was synthesized using a simple and low cost "co-precipitation" method. The synthesized nano materials had structural, vibrational and morphological properties, determined by X-ray diffraction, fourier-transform infrared spectroscopy and field emission scan-ning electron microscopy. The IP: synthesized 8.46.247.10 On: nanomaterial Tue, 13 was Dec 2022 characterised 07:13:52 using a range of techniques. X-ray diffraction was used to determine a aticle sizof 65.7 nm of the disc haped hexagonal particle. Further Copyright: Ame rican Scientific Publishers characterisation was done using UV-visible spectroscopand band gap energy analysis. The band gap value Delivered by Ingenta was found to be 3.58 eV. The nanocomposite also exhibited antibacterial activity against bacterial strains of Escherichia coli and Staphylococcus aureus. In the presence of light and air, nanoparticles of lanthanum zinc molybdate nanocomposite were found to inhibit the growth of Escherichia coli due to generation of singlet oxy-gen and hydrogen oxide radical. However, the same was not observed for S. aureus. Photocatalytic property of lanthanum zinc molybdate nanocomposite was determined using an aqueous solution of methylene blue dye. lanthanum zinc molybdate nanocomposite showed photo-degradation due to the formation of singlet oxygen and hydrogen oxide radical. Complete decolourization of blue colour of the of methylene blue solution at 6 pH was attained, using 40.0 mg lanthanum zinc molybdate nanocomposite, with a constant time interval. With time, the activity of lanthanum zinc molybdate nanocomposite was also found to decrease due to the formation of a hydrogen oxide layer on the surface of the nano material. This could be washed off with ethanol and distilled water. After drying, the catalytic nano particle could be reused for another reaction.