Template syntheses of diverse haloargentates with reversible photochromism behaviors and efficient photocatalytic properties

• Published in: CrystEngComm Vol. 23; no. 7; pp. 1588 - 1595
• Main Authors: Xue, Zhen-Zhen, Wang, A-Ni, Wei, Qi, Wei, Li, Han, Song-De, Pan, Jie
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 22.02.2021
• Subjects: Crystal structure; Crystallography; Decoloring; Hexamethylenetetramine; Photocatalysis; Photochromism; Pollutants
• ISSN: 1466-8033; 1466-8033
• DOI: 10.1039/d0ce01642j

By virtue of the template synthesis strategy, a series of haloargentates [Me-hmta][AgI 2 ]·H 2 O ( 1 ), [Me-hmta][Ag 2 I 3 ] ( 2 ) and [Me-hmta][Ag 2 Br 3 ] ( 3 ) (hmta = hexamethylenetetramine), have been successfully prepared. Compounds 1-3 feature diverse infinite chains with in situ methylated Me-hmta cations serving as the templates and structure-directing agents. The syntheses, crystal structures and characterizations have been investigated for the compounds. Interestingly, compounds 1 and 2 exhibit the reversible photo-induced chromic behaviors. The solid samples can be colored with light illumination and further decolored in the presence of heat. Moreover, photocatalysis tests have been performed on 2 and 3 , which display that the compounds can be considered as promising photocatalysts with high efficiency toward the degradation of organic dye pollutants. A series of haloargentates have been prepared exhibiting a reversible photochromic phenomenon and efficient photocatalytic properties.