Open AccessEfficient photo-, sono-, and sonophoto-fenton-like degradation of the organic pollutant methylene blue using a BiFeO3/graphene composite
Author(s) -
Yulia Susanti,
Rosari Saleh
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/763/1/012064
Subject(s) - methylene blue , graphene , thermogravimetric analysis , composite number , degradation (telecommunications) , materials science , catalysis , nuclear chemistry , hydrothermal circulation , chemical engineering , irradiation , photocatalysis , chemistry , composite material , organic chemistry , nanotechnology , physics , nuclear physics , telecommunications , computer science , engineering
In this study, we investigated the degradation of the organic pollutant methylene blue (MB) using photo-, sono-, and sonophoto-fenton processes under visible light, ultrasonic irradiation, and a combination of the two, respectively, in the presence of an iron-containing perovskite catalyst BiFeO 3 /graphene composite. The sample structure was characterized using X-ray diffraction; thermal analyses were performed using thermogravimetric analysis and differential thermal analysis; and the BiFeO 3 /graphene composite was prepared using a hydrothermal method. We observed better MB degradation via the BiFeO 3 /graphene composite using the sonophoto-fenton method relative to either the photo- or sono-fenton methods, with increased MB degradation occurring through the synergistic effects of both the photo- and sono-fenton techniques. Furthermore, addition of a chelating agent, such as ascorbic acid, to the photo- and sono-fenton reactions enhanced MB degradation.