In this study, FeVO4 was prepared and used as Fenton-like catalyst to degrade orange G (OG) dye. The removal of OG in an aqueous solution containing 0.5 g·L–1 FeVO4 and 15 mmol·L–1 hydrogen peroxide at pH 7.0 reached 93.2%. Similar rates were achieved at pH 5.7 (k = 0.0471 min–1), pH 7.0 (k = 0.0438 min–1), and pH 7.7 (k = 0.0434 min–1). The FeVO4 catalyst successfully overcomes the problem faced in the heterogeneous Fenton process, i.e., the narrow working pH range. The data for the removal of OG in FeVO4 systems containing H2O2 conform to the Langmuir–Hinshelwood model (R2 = 0.9988), indicating that adsorption and surface reaction are the two basic mechanisms for OG removal in the FeVO4–H2O2 system. Furthermore, the irradiation of FeVO4 by visible light significantly increases the degradation rate of OG, which is attributed to the enhanced rates of the iron cycles and vanadium cycles.
- The Institute of Hydrobiology (IHB), Chinese Academy of Sciences (CAS) is located at the foot of Luojia Hill and beside the
beautiful Donghu Lake in the City of Wuhan, Hubei Province, China. It was founded in 1930 as the Natural History Museum of
Academia Sinica, and renamed as the Institute of Zoology and Botany of Academia Sinica in 1934. In 1944, it was divided into
two institutes: The Institute of Zoology and Institute of Botany. In 1950, the main part of the Institute of Zoology, the
sections of phycology in the Institute of Botany, and some members from other institutes and universities were merged into
the Institute of Hydrobiology of the Chinese Academy of Sciences in Shanghai. The institute was moved from Shanghai to Wuhan
in 1954. 相似文献