Fe-Mo-O doping g-C3N4 exfoliated composite for removal of rhodamine B by advanced oxidation and photocatalysis

Fe-Mo-O doping g-C3N4 exfoliated composite was fabricated and characterized by XRD, FT-IR, UV-vis, SEM, TEM, XPS and N(2 )adsorption-desorption techniques. The as-prepared composite was composed of MoO3, FeMoyOx and exfoliated g-C3N4 crystals, and thus demonstrated high efficiency for degradation of Rhodamine B by advanced oxidation due to the rapid decomposition of H2O2 over the composite catalyst, giving 99 % degradation rate within oxidation time of 15 min. Also, it demonstrated high activity for photocatalytic degradation of Rhodamine B under visible light, achieving > 99 % degradation rate. The high catalytic activity for advanced oxidation and photocatalysis was mainly ascribed to the Fe/Mo dual ion synergy system that could effectively protect Fe (II), or heterojunctions on exfoliated g-C(3)N(4 )that could inhibit the recombination of photogenerated electrons and holes. Moreover, the composite catalyst presented an excellent recovery and reusability for advanced oxidation and photocatalytic degradation.

Automated summary

A Fe-Mo-O doped g-C3N4 exfoliated composite was synthesized and characterized. The composite consisted of MoO3, FeMoyOx, and exfoliated g-C3N4 crystals, exhibiting high efficiency for advanced oxidation degradation of Rhodamine B, with a degradation rate of 99% within 15 minutes. It also showed high activity for photocatalytic degradation of Rhodamine B under visible light, achieving a degradation rate of > 99%. The excellent catalytic activity was attributed to the Fe/Mo dual ion synergy system and heterojunctions on exfoliated g-C(3)N(4) that inhibited electron-hole recombination. Additionally, the composite catalyst exhibited excellent recovery and reusability for advanced oxidation and photocatalytic degradation.