Open AccessSynthesis and characterization of Fe-TiO2@SiO2@Fe3O4 magnetic visible light photocatalyst for removal of Rhodamine B dye
Author(s) -
Tien Nguyen Thi Thuy,
Do Dang,
Viet Nguyen Minh,
Ngoc Ha Minh,
Minh Dang Nhat,
Cuong Vu Duc,
Phuong Nguyen Minh
Publication year - 2021
Publication title -
xúc tác và hấp phụ
Language(s) - English
Resource type - Journals
ISSN - 0866-7411
DOI - 10.51316/jca.2021.032
Subject(s) - rhodamine b , photocatalysis , visible spectrum , materials science , scanning electron microscope , photoluminescence , catalysis , precipitation , hydrothermal circulation , rhodamine , photochemistry , band gap , nuclear chemistry , chemical engineering , chemistry , fluorescence , optoelectronics , optics , composite material , organic chemistry , physics , meteorology , engineering
In this research, the magnetic visible light photocatalyst of Fe-TiO2@SiO2@Fe3O4 was synthesised using co-precipitation, sol-gel and hydrothermal method. The as-obtained material’s properties were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), diffuse reflectance spectra (UV- Vis), magnetic curve (VSM) and photoluminescence (PL). The catalytic activity of the materials under visible light was investigated for degradation of Rhodamine B pigment in water. The obtained results indicated that at the catalyst dose of 0.5 g/L, Fe-TiO2@SiO2@Fe3O4 with TiO2/SiO2@Fe3O4 (SF) ratio of 2:1 performed the highest efficiency of 99.3 % after 180 minutes under irritation. The enhanced photocatalytic performance of Rhodamine B under visible light could be ascribed to the reducing of band gap energy and decrease in the recombination rate of photogenerated electron/hole pairs. The catalytic activity after four times of recycling were 71,3 %.The material showed potential for further application in water treatment.