A 2D cadmium metal–organic framework: Synthesis, structure and luminescence sensing for chromate, permanganate, cupric, silver and ferric

作者：Zhixiang Wang, Hai‐Xin Tian, Min Li, Miao Zha, Bao‐Long Li, Bing Wu · 发表于：Applied Organometallic Chemistry · 年份：2020 · DOI：10.1002/aoc.5977 · 被引用次数：13 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Molecular Sensors and Ion Detection、Advanced Nanomaterials in Catalysis

A multi‐responsive Cd metal–organic framework {[Cd (ttpe)(H 2 O)(ip)]•4H 2 O•DMAC} n ( 1•4H 2 O•DMAC ) was synthesized using hydrothermal method (ttpe = 1,1,2,2‐tetra(4‐(1H‐1,2,4‐triazol‐1‐yl)phenyl)ethylene, ip = isophthalate, DMAC = N,N ‐dimethylacetamide), and characterized. 1 exhibits a 2D (4,4) network. The luminescent sensing experimrnts showed that 1•4H 2 O•DMAC as a new MOF luminescent sensor can detect Cr 2 O 7 2− , CrO 4 2− , MnO 4 − , Cu 2+ , Ag + and Fe 3+ in aqueous solution with simultaneously high efficiency and high sensitivity. The quenching constants K sv for Cr 2 O 7 2− , CrO 4 2− , MnO 4 − , Cu 2+ , Ag + and Fe 3+ are 4.231 × 10 4 M −1 , 2.471 × 10 4 M −1 , 6.459 × 10 3 M −1 , 7.617 × 10 3 M −1 , 1.563 × 10 4 M −1 and 3.574 × 10 4 M −1 , respectively. The detection limits are 0.094 μM for Cr 2 O 7 2− , 0.108 μM for CrO 4 2 − , 0.346 μM for MnO 4 − , 0.302 μM for Cu 2+ , 0.221 μM for Ag + , and 0.100 μM for Fe 3+ . 1•4H 2 O•DMAC exhibits high photocatalytic efficiency for degradation of methylene blue under visible light irradiation.