[Co(2,2'-bipy)3]Ag3I6 with a hole structure facilitates dye adsorption and photocatalytic reduction

Chunying Tang; Yawei Sun; Jianbiao Liu; Qinfeng Xu; Chun-Yang Zhang

doi:10.1039/d2dt03128k

[Co(2,2'-bipy)₃]Ag₃I₆ with a hole structure facilitates dye adsorption and photocatalytic reduction

Dalton Trans. 2022 Nov 15;51(44):16784-16789. doi: 10.1039/d2dt03128k.

Authors

Chunying Tang¹, Yawei Sun¹, Jianbiao Liu¹, Qinfeng Xu², Chun-Yang Zhang¹

Affiliations

¹ College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China. cyzhang@sdnu.edu.cn.
² School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China. xuqinfeng@sust.edu.cn.

PMID: 36345798
DOI: 10.1039/d2dt03128k

Abstract

We synthesized a new iodoargentate [Co(2,2'-bipy)₃]Ag₃I₆ (1) (2,2'-bipy = 2,2'-bipyridine) via the reaction of AgI, KI, 2,2'-bipy and Co(NO₃)₂ in dimethylformamide (DMF) solvent at room temperature. The [Co(2,2'-bipy)₃]³⁺ complex cation directs the formation of the 0 D cluster [Ag₃I₆]^3- anion that features an irregular double-level gear wheel with a maximum diameter of 5.512 Å. The iodoargentate possesses the characteristics of semiconductors with a band gap of 2.03 eV. It exhibits excellent ion-exchange behavior for adsorbing crystal violet (CV) and methylene blue (MB), and it can function as a promising photocatalyst for degrading rhodamine B (RhB). The improved photocatalytic activity can be ascribed to the hole structure in the anions of iodoargentates.