文献类型：期刊文献

英文题名：Self-assembly of two Ag(I) metal-organic frameworks based on tri(pyridin-4-yl)amine: Crystal structures, anion-directed effect, and Cr2O72- capture behaviour

作者：Miao, Chaolin[1];Su, Tian-E.[1]

第一作者：苗超林

通讯作者：Su, TE[1]

机构：[1]Xinxiang Univ, Dept Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China

第一机构：新乡学院化学化工学院

通讯机构：[1]corresponding author), Xinxiang Univ, Dept Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China.|[110713]新乡学院化学化工学院;[11071]新乡学院;

年份：2020

卷号：112

外文期刊名：INORGANIC CHEMISTRY COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000510111200043)】；

语种：英文

外文关键词：Ag(I)-based MOF; Stability; Structure; Anion-directed effect; Cr2O72-

摘要：Two 2D Ag(I)-based metal-organic frameworks, [Ag(TPA)center dot CF3COO](n) (MOF 1) and {[Ag(TPA)]center dot PF6}(n) (MOF2), were successfully designed and prepared by the diffusion method, which exhibits a significant anion-directed effect. The as-synthesized crystals were analysed and characterized by many methods, including elemental analysis, single or powder X-ray diffraction, FT-IR, TGA, and UV-Vis. They both have excellent water stability. More interestingly, MOF2 can be used as an anion exchange material for capturing Cr(2)O(7)(2-)in pure water, because free PF6- anion in MOF2 can be easily exchanged by Cr2O72-. However, the Cr2O72-- exchange performance is not found in MOF 1, because the CF3COO- counter anion is coordinated and fixed in Ag(I) centre lead to hardly replacing by Cr2O72-. The structures and properties of MOFs can be directly tuned and affected by various anions.