Solvents mediated-synthesis of BiOI photocatalysts with tunable morphologies and their visible-light driven photocatalytic performances in removing of arsenic from water

A facile approach for the tunable fabrication of BiOBr photocatalysts with high activity and stability

“…As for EtOH, due to its viscosity is higher than H 2 O, the ion diffusion rate is slower, the thickness of the nanosheets decrease, which is in agreement with references [38]. On the other hand, because the directing role of ethanol in self-assembly is also weak and cannot help nanosheets to form flower-like structures completely [31] and hydrogen bonds between ethanol molecules are different form isopropanol, thus honeycomb-like structure was obtained, which is shown in Fig. 4(b).…”

“…Then, the small crystals dissolve in light of the Gibbs-Thomson law and form the smooth and large nanosheets due to the intrinsic tetragonal layer-structure of BiOBr. In water solvent, owing to the smallest viscosity among the three solvents, the reaction ions have the highest diffusion rate and supersaturation during the hydrothermal process, leading to the nanosheets anisotropic growth and becoming thick and large [31]. In addition, the lack of an alkyl chain in water may make it difficult to form 3D particles [32].…”

Enhanced p-cresol photodegradation over BiOBr/Bi2O3 in the presence of rhodamine B

“…Several bismuth compounds have been reported to be visible light active photocatalysts, such as bismuth oxyhalides, [4][5][6][7][8] NaBiO 3 , 9-12 BiVO 4 , [13][14][15][16] etc. It is interesting that despite being a heavy metal, bismuth is generally considered to be safe, as it is non-toxic and noncarcinogenic.…”

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

“…Bismuth oxyhalide compounds (common formula BiOX, X ¼ Cl, Br and I) have drawn considerable attention due to their potential applications in environmental remediation [1][2][3]. This class of compounds has an indirect bandgap and crystallizes in a tetragonal layered structure, which is characterized by [Bi 2 O 2 ] slabs interleaved by double slabs of halogen atoms.…”