Tactile Sensors: Hydroxyl Decorated Silver Metal-Organic Frameworks for Detecting Cr2O72-, MnO4-, Humic Acid, and Fe3+ Ions

Brij Mohan; Shixuan Ma; Sandeep Kumar; Yang Yang; Peng Ren

doi:10.1021/acsami.2c22871

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

ACS Appl Mater Interfaces. 2023 Apr 5;15(13):17317-17323. doi: 10.1021/acsami.2c22871. Epub 2023 Mar 24.

Authors

Brij Mohan¹, Shixuan Ma¹, Sandeep Kumar¹, Yang Yang¹, Peng Ren¹

Affiliation

¹ School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.

PMID: 36961965
DOI: 10.1021/acsami.2c22871

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-4-yl)pyridin-3-ol-linked silver coordinated metal-organic frameworks Ag-MOFs as a promising sensor for Cr₂O₇^2-, MnO₄^-, humic acid (HA), and Fe³⁺ 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.

Keywords: humic acid; iron; metal−organic frameworks (MOFs); oxoanions; sensor.