Construction of Iodoargentates with Diverse Architectures: Template Syntheses, Structures, and Photocatalytic Properties
Ying Mu, Di Wang, Xiangdong Meng, Jie Pan, Song‐De Han, Zhen‐Zhen Xue
Abstract
Guided by diverse solvated metal cations, three novel iodoargentates with various architectures ranging from a one-dimensional chain to a two-dimensional layered-network have been successfully constructed and further characterized. Compounds {[Cr(DMSO)6][Ag6I9]·H2O} (1) and [Ni(DMSO)6][Ag5I7] (2) present the anionic Ag–I infinite chain structure wherein different secondary building units could be readily observed. Separated by [V(DMSO)5(H2O)]2+ cations, the [Ag6I8]2– layers are generated in compound 3 and further stacked into a three-dimensional supramolecular architecture by virtue of the electrostatic interactions as well as intermolecular forces. Structural analysis suggests that inorganic molecular templates together with diverse connection modes of AgI4 motifs play a significant role in the formation of the final products. Notably, the small band gap of solids 2 and 3 affords a great opportunity for photocatalytic degradation of organic dyes under UV light irradiation. Compound 2 possesses photodegradation activity and recyclability toward methyl violet, while an excellent catalytic behavior for methylene blue has been investigated for solid 3. In addition, the possible photocatalytic mechanisms for compounds 2 and 3 have been further studied.