Tactile Sensors: Hydroxyl Decorated Silver Metal–Organic Frameworks for Detecting Cr₂O₇^2–, MnO₄^–, Humic Acid, and Fe³⁺ Ions

Abstract

Anionic, acidic, and metal ions are common contaminants in water and cause serious concerns for human and aquatic life. With the goal of rapid detection of analytes, we herein design a new array of ligand 5-(4H-1,2,4-triazol-4yl)pyridin-3-ol-linked silver coordinated metal−organic frameworks Ag-MOFs as a promising sensor for Cr 2 O 7 2− , MnO 4− , humic acid (HA), and Fe 3+ ions down to the micro level. Furthermore, as evidenced by luminescence, excitation-emission matrix (EEM) spectroscopic, and PXRD measurements, designed metal−organic frameworks (MOFs) can be fast, stable, and reusable for analyte detection in water.

Efficient synthesis of benzoacridines and indenoquinolines catalyzed by acidic magnetic dendrimer

“…4 ). By comparing the XRD patterns of Fe 3 O 4 and Fe 3 O 4 @SiO 2 @TAD-G2-SO 3 H, it can be confirmed that the ferrite core remains stable without undergoing any phase changes during the functionalization process 52 . The XRD patterns of the prepared Fe 3 O 4 @SiO 2 @TAD-G2-SO 3 H show distinct diffraction peaks at 2 θ = 30.2°, 35.4°, 43.7°, 56.6°, and 63.0°, corresponding to the (220), (311), (400), (422), (511), and (440) Miller planes of Fe 3 O 4 nanoparticles.…”

Selective dye sorption and metal ion sensing behaviours of a new Cd-based MOF

“…A summary of the sensing of Fe 3+ , Cr 3+ and Al 3+ ions using MOF materials is shown in Tables S6–S8 (ESI†), respectively. 52,59,89–120…”

Two dye-encapsulated triple-emitting naphthalene-based Zr-MOFs for tunable white-light emission and dual mode detection of inorganic ions

“…Compared to the complex and strong competence of chromatography methods, fluorescence detection methods exhibit many advantages such as affordability, convenience, fast response and visualization. 10–13 To cope with the increasingly complex detection environment, the preparation of fluorescent sensors with high stability, sensitivity, selectivity and convenience has become crucial.…”