Abstract
The photo-Fenton reaction consisted of photocatalytic reaction and heterogeneous Fenton reaction is an effective technique for pollutant degradation, because the degradation rate is faster than individual reactions. In this work, Fe2(MoO4)3/MoO3 heterojunction was prepared via a grinding-calcination method. Work function measurement indicated that the inner electric field was build at the interface between Fe2(MoO4)3 and MoO3, leading to a Z-scheme electron (e-) transfer pathway, and this result was supported by the radical quenching experiment and band structure analysis. In photo-Fenton reaction, the degradation rate was 57 and 170 times higher than those in heterogeneous Fenton reaction and photocatalytic reaction, respectively. This improvement was because H2O2 not only served as an oxidant in heterogeneous Fenton reaction, but also acted as scavenger of e- in photocatalytic reaction. Synergistic effect was established between heterogeneous Fenton reaction and Z-scheme photocatalytic process via H2O2 as a medium, and 1140% extra degradation efficiency was yielded by coupling these two reactions together. Besides high activity, 92.6% of degradation efficiency was remained after the 5th cycle, indicating an outstanding recyclability.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
