Low-dimensional bismuth(III) iodide hybrid material with high activity for the fast removal of rhodamine B

Abstract

Organic–inorganic hybrid lead-based perovskite crystal materials have been widely studied due to their excellent optical–electronic properties. However, the toxicity of lead limits their widespread use. Here, a lead-free perovskite-type compound, tetrakis(1,2,3-trimethylimidazolium) di-μ3-iodido-tetra-μ2-iodido-decaiodidotetrabismuth(III), (C6H11N2)4[Bi4I16], has been successfully synthesized by a simple solvothermal method. It exhibits a zero-dimensional (0D) tetrameric structure, including edge-sharing [Bi4I16]4− distorted octahedra. The band gap of 2.0 eV is close to that of (NH4)3[Bi2I9]. Degradation ability measurements were performed to examine the potential application of this material as an alternative for waste-water treatment.

Lattice versus structure, dimensionality versus periodicity: a crystallographic Babel?

“…Structures built of finite building blocks are incorrectly referred to as 'zero dimensional'. For example, Chen et al (2018) have reported a leadfree hybrid perovskite containing 'zero-dimensional discrete anionic clusters'. A cluster of atoms is obviously three dimensional but zero periodic, i.e.…”

Unexpected Formation of the Iodobismuthate Salt (C14H15S2N2)2(C9H10SN)2[Bi4I16] upon Reaction of the Unsaturated Ligand Z-PySCH2CH=CHCH2SPy with BiI3

“…It can be described as two sets of edge-sharing [Bi2I10] 4− bioctahedra, which are linked through four µ2-I and µ3-I bridges. The α-[Bi4I16] 4− architectures are very common in the literature [15][16][17], and they also appear for chloride [18] and bromide [19] bismuthates. The second isomer of the {Bi4I16} anionic family is β-[Bi4I16] 4− B.…”

“…As highlighted in C, the rarest isomer γ-[Bi4Br16] 4− can be described as a result of the fusion of two binuclear [Bi2Br9] 3− moieties in which two µ2bridging bromide ligands are converted to µ3 ones. [16,20,22].…”