Facile microwave synthesis of novel hierarchical Bi24O31Br10 nanoflakes with excellent visible light photocatalytic performance for the degradation of tetracycline hydrochloride

Solvothermal synthesis of Bi24O31ClxBr10−x solid solutions with enhanced visible light photocatalytic property

“…Besides BiOX, their derivatives, such as Bi 3 O 4 Cl [10], Bi 24 O 31 Cl 10 [11], Bi 3 O 4 Br [12] and Bi 24 O 31 Br 10 [13] have also been known to researcher one after another. Among them, Bi 24 O 31 Cl 10 and Bi 24 O 31 Br 10 are found to possess higher photocatalytic activity than BiOCl and BiOBr under the visible light irradiation [14,15]. Nonetheless, their photocatalytic efficiencies are still far from efficient for the practical applications, which need some further improvements.…”

Enhanced Photocatalytic Activity of Bi 24 O 31 Br 10 : Constructing Heterojunction with BiOI

“…Many bismuth-based compounds including BiOX (X = Cl, Br, I) [12,13] , BiVO4 [10] , NaBiO3 [14] , and bismuth titanate [15] have been reported to demonstrate excellent photocatalytic and photoelectron chemical performances. Very recently, Bi24O31X10 (X = Cl, Br) [16][17][18][19] were reported to be novel bismuth oxyhalides with narrower band gap and higher photocatalytic activity compared with BiOX. However, very few studies on Bi24O31X10 heterojunction photocatalytic properties are reported so far.…”

“…Iodide ions in HI tend to substitute the bromide ions or oxygen ions in Bi24O31Br10 and bring out BiOI. BiOI, a bismuthbased photocatalyst with a band gap of 1.9 eV, exhibits great ability in separation of the photo-induced electrons and holes under visible light [16] . Photocatalytic activity of such Bi-based photocatalytic heterojunction composites is significantly improved in contrast to Bi24O31Br10.…”

Poly(vinyl pyrrolidone)-assisted hydrothermal synthesis and enhanced visible-light photocatalytic performance of oxygen-rich bismuth oxychlorides

“…Although numerous BiOX materials with different atomic ratios of Bi/O/X have been successfully prepared and developed as efficient photocatalysts [9][10][11][12], there are few literatures concerning systematical studies toward the synthesis and photocatalytic evaluation of Bi 12 [16]. Very recently, He et al reported a facile solvothermalcalcining process to prepare three-dimensional (3D) flower-like composites Bi 12 O 17 Cl 2 /b-Bi 2 O 3 for the first time, which displayed superior catalytic behavior for degradation of 4-tert-butylphenol upon visible-light irradiation [17].As a result, to fulfill the requirement of real employments of photocatalytic processes toward toxic contaminants control and remediation in water body, it is urgent to design and develop lamellar Bi 12 O 17 Cl 2 compounds with proper electronic structure, unique optical properties, and favorable morphologies, especially, 3D hierarchical superstructures, since these 3D ordered architectures possess structural merits of both a microstructure and a nanostructure, such as high crystallinity, high surface to volume ratio, and plenteous electronic transport paths, which are potentially beneficial to the separation of charge carriers and further improvement of photocatalytic performance [18].…”