Open AccessHigh degradation of BIVO4 nanoparticle for organic dyes under visible light irradiation mediated by S2O8
Author(s) -
Vu Dai Cao,
Linh Xuan g,
Van Huan Nguyen,
Tuong Vi Tran,
Hien Thi Thu Vu,
Chương V. Nguyen
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/736/4/042019
Subject(s) - visible spectrum , monoclinic crystal system , scanning electron microscope , hydrothermal circulation , raman spectroscopy , methylene blue , degradation (telecommunications) , irradiation , materials science , nuclear chemistry , nanoparticle , chemistry , photochemistry , catalysis , photocatalysis , analytical chemistry (journal) , crystallography , nanotechnology , chemical engineering , crystal structure , optoelectronics , optics , physics , organic chemistry , telecommunications , computer science , nuclear physics , engineering , composite material
In this study, we have successfully synthesized BiVO 4 materials by hydrothermal method. The degradation of methylene blue (MB) under LED visible light mediated by S 2 O 8 /BiVO 4 /Vis system. The obtained BiVO 4 catalyst was characterized by X-ray diffraction (XRD), Raman, scanning electron microscope (SEM), and UV-visible diffuse reflectance spectrum (UV-vis DRS). We investigated the effect of S 2 O 8 concentrate, pH value and initial concentration on the removal rate of MB. The results of XRD spectra showed that the BiVO 4 fragment has a crystalline structure in moneblinite monoclinic phase alone. The degradation of MB concentration under visible light mediated S 2 O 8 /BiVO 4 /Vis was 78% after 100 minutes of irradiation. The band gap (Eg) of BiVO 4 was estimated to be 2.39 eV. Therein, the presence of Na 2 SO 4 anions decrease concentration of MB with compared to the original using S 2 O 8 /BiVO 4 system alone.