Open AccessThe effects of adding Ag and graphene to Fe3O4/TiO2 nanocomposites on adsorptive and sonophotocatalytic capabilities
Author(s) -
M. Fauzian,
Ardiansyah Taufik,
Rosari Saleh
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1442/1/012019
Subject(s) - thermogravimetric analysis , adsorption , materials science , nanocomposite , absorbance , visible spectrum , photocatalysis , methylene blue , graphene , precipitation , catalysis , diffraction , nuclear chemistry , chemical engineering , analytical chemistry (journal) , nanotechnology , chemistry , chromatography , optics , organic chemistry , optoelectronics , physics , meteorology , engineering
Fe 3 O 4 /TiO 2 was synthesized using the sol-gel method both with and without the addition of Ag. Fe 3 O 4 /TiO 2 and Fe 3 O 4 /TiO 2 /Ag were also synthesized with added graphene by using the co-precipitation method. All the prepared samples were characterized using X-ray Diffraction (XRD), UV-Vis Absorbance, and Thermogravimetric Analysis (TGA). Furthermore, adsorptive and sonophotocatalytic capabilities were tested using a degradation of Methylene Blue (MB) as an organic dye. Sonophotocatalytic activity was measured using UV or visible light and ultrasound. It was found that Ag/Fe 3 O 4 /TiO 2 /NGP composites have better adsorption and sonophotocatalytic capabilities than other samples. The adsorption process followed a pseudo-second-order kinetic model, with the maximum adsorption capacity being 76 mg/g. The catalyst can go through the sonophotocatalytic process for four cycles. In addition, the hole is the main active species in sonophotocatalytic activity.