Engineering FeS2 nanoparticles on tubular g-C3N4 for photo-Fenton treatment of paint wastewater
- Resource Type
- Academic Journal
- Authors
- Chan Wang; Bangqi Wei; Han Zhu; Yimin He; Guoxia Ran; Qijun Song
- Source
- 中国化学快报(英文版) / Chinese Chemical Letters. 33(6):3073-3077
- Subject
- Photo-Fenton catalysts
FeS2 nanoparticles
Hollow tubular g-C3N4
Heterojunction
Reactive oxygen species
Paint wastewater degradation
- Language
- Chinese
- ISSN
- 1001-8417
An efficient photo-Fenton catalyst(FeS2@HTCN)was designed by maximizing the synergistic effect of FeS2 nanoparticles and hollow tubular g-C3N4(HTCN).Molecule self-assembly and molten salts-assisted calcination were used to engineering the hollow structured g-C3N4 before anchoring FeS2 nanoparticles on the walls of HTCN via reflux method.Compared to bulk g-C3N4,the unique structure of HTCN and heterojunction in the composite endowed FeS2@HTCN with more active sites and abundant channels for electron transfer and charge separation.The enriched electrons can improve the Fe3+recycling and boost Fe2+catalyzed·OH production via H2O2.As-prepared photo-Fenton catalyst was successfully applied to the treatment of industrial paint wastewater.The paint wastewater with its COD as high as 8200 mg/L can be effectively degraded with 0.2 mol/L H2O2 in 90 min under visible light irradiation.The photo-Fenton system was further evaluated according to the process stability and economic benefit,proving that the strategy presented in this work would be applicable to the treatment of real wastewater.