Unlocking the Potential of Gallic Acid-Based Metal Phenolic Networks for Innovative Adsorbent Design
Journal
Molecules
Journal Volume
30
Journal Issue
6
Start Page
1218
ISSN
1420-3049
Date Issued
2025-03-08
Author(s)
Shella Permatasari Santoso
Artik Elisa Angkawijaya
Shin-Ping Lin
Hsien-Yi Hsu
Chang-Wei Hsieh
Astrid Rahmawati
Osamu Shimomura
Suryadi Ismadji
DOI
10.3390/molecules30061218
Abstract
Metal phenolic networks (MPNs) have attracted significant attention due to their environmentally benign nature, broad compatibility, and universal adhesive properties, making them highly effective for modifying adsorbent surfaces. These supramolecular complexes are formed through the coordination of metal ions with natural phenolic ligands, resulting in stable structures while retaining the active adsorption sites of the ligands, thereby enhancing the adsorption performance of unmodified substrates. Among various MPNs, metal ion gallic acid (GA) networks are particularly well-known for their exceptional stability, biological activity, and superior adsorption ability. This review offers a comprehensive examination of GA-based MPN adsorbents, focusing on their formation chemistry, characterization techniques, and applications. The coordination chemistry underlying the stability of GA–metal complexes is analyzed through equilibrium studies, which are critical for understanding the robustness of MPNs. The main analytical methods for assessing metal ligand interactions are discussed, along with additional characterization techniques for evaluating adsorbent properties. This review also explores various synthesis and performance enhancement strategies for GA-based MPN adsorbents, including stand-alone MPNs, MPN-mediated mesoporous materials, MPN-MOF composites, and MPN-coated substrates. By consolidating current advancements in MPN-based adsorbents and offering fundamental insights into their chemistry and characterization, this review serves as a valuable resource for researchers seeking to develop stable, functional metal-organic materials. It aims to drive innovation in sustainable and efficient adsorbent technologies for diverse environmental and industrial applications.
Subjects
adsorbent composite
chelate complex
metal complex
metal phenolic coating
surface modification
Publisher
MDPI AG
Description
Article number: 1218
Type
journal article