Synthesis of 3D flowerlike S-scheme Bi4O5I2/BiOI heterojunction with synergistic effect of adsorption and photocatalysis

Unveiling the origin of the efficient photocatalytic degradation of nitazoxanide over bismuth (oxy)iodide crystalline phases

“…6f, photoexcited holes and hydroxyl radicals played an important role in the photocatalytic removal of nitazoxanide by the synthesized photocatalyst. Unlike in previous reports, [40][41][42][43] superoxide radicals were not the main driving force in the photocatalytic reaction, presumably due to the low content of Bi 4 O 5 I 2 , resulting in a smaller number of the BiOI/Bi 4 O 5 I 2 heterostructures. The photocatalytic performance of the BiOI/Bi 4 O 5 I 2 heterojunctions was previously studied.…”

“…The photocatalytic performance of the BiOI/Bi 4 O 5 I 2 heterojunctions was previously studied. 41,42 In the context of photocatalytic performance, it is noteworthy that the conduction band (CB) and valence band (VB) potentials reported for BiOI and Bi 4 O 5 I 2 in previous studies offer valuable information. BiOI exhibits more positive potentials (E CB = 0.07 V vs. NHE and E VB = 1.91 V vs. NHE) 42 than Bi 4 O 5 I 2 , where the CB potential is negative (E CB = −0.68 V vs. NHE), 42 although with a similar VB potential (E VB = 1.78 V vs. NHE) 42 (Fig.…”