Enhanced photocatalytic degradation of Rhodamine B in aqueous solution by activation of H2O2 with glucose modified CuFeO2
Yuhang Tian, Zifeng Zeng, Yiting Hu, Zhixiong Liu
Abstract
The heterogeneous photo-Fenton (HPF) system was developed to removal Rhodamine B (Rh B) with glucose modified and reduced CuFeO 2 (CFO) catalysts. The influence of reducing agent amount, synthesis temperature and calcination temperature on synthesis and catalytic performance of CuFeO 2 was explored in detail. Notably, the CFO-5 exhibited the highest catalytic performance, achieving a 99.25 % removal of Rh B after reaction 120 min. Furthermore, CFO-5 also exhibited good repeatability and stability for Rh B degradation and the removal rate of Rh B remained at 93.54 % after five cycles of degradation. Finally, the mechanism of CuFeO 2 photocatalytic degradation of Rh B was clarified through experiments for quenching free radicals, analyses using XPS and ESR, and the potential practicability of Vis/H 2 O 2 /CuFeO 2 system was evaluated. • CuFeO 2 was successfully synthesized by using glucose as reducing agent and modifier. • The effects of different synthesis conditions on the structure and morphology of CuFeO 2 . • The effects of different factors on the degradation of Rh B. • The possible degradation mechanism of CuFeO 2 was proposed. • CuFeO 2 synthesized with glucose showed excellent degradation effect on Rh B.