Enhanced visible-light photocatalytic degradation of pollutants using mesoporous S-doped g- C 3 N 4 nanosheet photocatalysts
Paper ID : 1285-ICNS
Authors:
Saba Mahmoodpour *1, Zahra Shariatinia2, Milad Jourshabani3, Vahid Hoseinpoor2
1Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), P.O. Box:15875-4413, Tehran, Iran
2Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), P.O. Box:15875-4413, Tehran, Iran.
3Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), P.O.Box:15875-4413, Tehran, Iran.
Abstract:
Mesoporous S-doped graphitic carbon nitride (MCNS) nanosheets were synthesized and applied as photocatalysts for the degradation of methyl orange (MO). Effects of three synthesis key factors, namely reaction
temperature, reaction time, SiO 2 /thiourea weight ratio and also their interactions on the MO removal rate were
investigated. Results showed that the optimized physicochemical properties were achieved for the MCNS samples by controlling the synthesis key factors and it was found that the reaction temperature and reaction time had significant influences on the MO photocatalytic removal. Among bulk g-C 3 N 4, CN (un-doped g-C 3 N 4 ), CNS (sulfur-doped g-C 3 N 4 without template) and TiO 2 (Degussa P25) samples, the optimized MCNS-4 illustrated the highest photocatalytic activity toward removal of MO under visible-light irradiation. The enhanced performance was originated from synergistic effects of high surface area, mesoporous texture, sulfur doping, and high visible-light absorption. Furthermore, MCNS-4 revealed high reusability and stability without any significant decrease in its efficiency.
Keywords:
Graphitic carbon nitride, Mesoporous nanomaterials, Synthesis key factors, Photocatalytic activity, Degradation
Status : Abstract Accepted (Poster Presentation)