Immobilized dyes within anionic indium coordination polymer for photocatalytic 1O2 generation

• Published in: Microporous and mesoporous materials 2020-12, Vol.308, p.110568, Article 110568
• Main Authors: Jiang, Yansong, Lu, Zijing, Wang, Pengcheng, Xu, Jianing, Wang, Li, Fan, Yong
• Format: Article
• Language: English
• Subjects: 2D layer; Adsorption of dyes; Indium coordination polymer; Photooxidation of DHN
• ISSN: 1387-1811; 1873-3093
• DOI: 10.1016/j.micromeso.2020.110568

A new anionic indium coordination polymer, (Me2NH2)[In(OH-BDC)2]·H2O (1), has been designed and synthesized under solvothermal conditions based on organic ligand 5-hydroxyisophthalic acid. 1 exhibits a 2D layered structure with rhombic windows, which is stacked to form 3D supramolecular network by the π-π stacking interactions of phenyl rings of ligand in adjacent layers. It not only shows excellent resistance to acid or basic conditions but also has good tolerance to various common solvents. Moreover, due to the negative charge of the host framework, it shows remarkable selective adsorption for positive charge dyes such as methylene blue (MB), rhodamine B (RhB) and crystal violet (CV), and the removal rates are higher than 90%. In particular, the adsorption capability of 1 to RhB is higher than most CPs based adsorbents. In addition, MB@1 is a high-efficiency reactive oxygen species (ROS) producer with good photocatalytic activity for the oxidation of 1,5-dihydroxynaphthalene (1,5-DHN) and can be recycled five times without loss of activity. To our knowledge, it is the first time that dye@CP was used for ROS production and photooxidation of 1,5-DHN. [Display omitted] •A new 2D layer anionic Indium coordination polymer has been prepared and characterized under solvothermal condition•In the structure of 1, there is a rhombic windows along c axis, and the layers are stacked to form 3D supramolecular network•Negative charge of 1 host framework shows remarkable adsorption property for positive charge dyes.•MB@1 is a high-efficiency ROS producer for the oxidation of 1,5-dihydroxynaphthalene