Multi-active photocatalysts of biochar-doped g-CN incorporated with polyoxometalates for the high-efficient degradation of sulfamethoxazole.

Sulfamethoxazole (SMX) is one of major antibiotic contaminants in current aqueous environment. In this paper, waste loofah and melamine were co-carbonized to prepare biochar-doped g-CN (CCN) by a one-pot method and then combined with CoPMoVO (CoPMoV) using a binder to obtain the novel polyoxometalates (POMs) photocatalytic composites (CCN/CoPMoV). The incorporation of CoPMoV dramatically reduced the photogenerated carrier recombination and led to a small band gap.