Efficient Visible-Light Photocatalysis of 2D-MXene Nanohybrids with Gd³⁺- and Sn⁴⁺-Codoped Bismuth Ferrite

Nowadays, photocatalysis has gained tremendous interest owing to the fact that it can overcome water crisis as well as the environmental issues by utilizing a major source of solar energy. The nanohybrid structures of Gd³⁺- and Sn⁴⁺-doped bismuth ferrite (Bi_1- Gd Fe_1- Sn ; BGFSO) with two-dimensional (2D) MXene sheets are synthesized by the coprecipitation method. The 2D sheets have a large surface area, incorporation of which into Bi_1- Gd Fe_1- Sn (BGFSO) nanoparticles provides a path for electrons to flow, which results in large recombination time and thus enhances dye degradation. The Bi_0.90Gd_0.10Fe_0.80Sn_0.20O₃/MXene (BGFO-20Sn/MXene) nanohybrid shows 100% degradation of Congo dye from the catalytic solution in 120 min, which is highly efficient for industrial application.