Fe, Cu co-doped BiOBr with improved photocatalytic ability of pollutants degradation

Novel Z‐scheme 2D/2D Bi4O5Br2/BiOCl heterojunction with enhanced photocatalytic activity for RhB degradation

“…Accordingly, the E f of Bi 4 O 5 Br 2 and BiOCl was estimated to −0.66 and − 0.03 V versus NHE. For n type semiconductor, the position of conduction band ( E C ) is usually 0.1 V lower than that of E f. 13,55,56 Thus, the E C of Bi 4 O 5 Br 2 and BiOCl was −0.76 and − 0.13 V. Also, the position of valence band ( E V ) was calculated as +1.98 and +3.31 V on account of the empirical formula ( E g = E V − E C ).…”

“…Hence, •O 2 − and h + were considered to be the major reactive radical species, and •OH played the second role in the presence of the Bi 4 O 5 Br 2 /BiOCl heterojunction. (E C ) is usually 0.1 V lower than that of E f. 13,55,56 Thus, the E C of Bi 4 O 5 Br 2 and BiOCl was −0.76 and − 0.13 V. Also, the position of valence band (E V ) was calculated as +1.98 and +3.31 V on account of the empirical formula (E g = E V − E C ).…”

Recent developments in bismuth oxyhalide-based functional nanomaterials for biomedical applications

“…Excessive metal doping can form impurity energy levels in the forbidden band, which dramatically promote the separation and migration of photogenerated carriers. 91 Similarly, Xu et al synthesized Nb/Se co-doped BiOI nanomaterials via the solvothermal method (Fig. 3E).…”

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

“…5). All samples belonged to the type III of BDDT classification, 44 indicating the formation of mesoporous structures (2-50 nm). 45 The specific surface areas of the pure C, Ti(I/S) and C-Ti(I/S)-3 composite were 21.6462 m 2 g À1 , 50.0796 m 2 g À1 , and 60.2593 m 2 g À1 , respectively (Table 1).…”