Facile synthesis of nitrogen-doped BiOBr nanoplates for degradation of florfenicol via a synergistic photocatalytic peroxydisulfate activation

In this work, a series of 2D nitrogen-doped BiOBr (N-BOB) nanoplates were synthesized by a one-pot hydrothermal method, which was adopted for an integrated photocatalytic peroxydisulfate (PDS) activation under visible light. By virtue of the N doping that allows narrowed band gap, extended light response range and rapid separation of photo-carriers, N-BOB shows an FF degradation ratio up to 87.3 % in 1 h, surpassing that of the unmodified BiOBr (65.4 %). Furthermore, the generation of reactive oxygen species are facilitated due to the synergistic effect between photocatalysis and PDS activation, which are identified to be 1 O 2 , h + , •O 2 - , •OH and SO 4 • - , in which 1 O 2 , h + and •O 2 - play a major role.