Recent Progress in Metal‐Organic Frameworks@Cellulose Hybrids and Their Applications

Abstract

In recent years, metal‐organic frameworks (MOFs) are attracting increasing attention due to their charming properties. However, the intrinsic fragility, powdered crystalline state, and poor processibility of MOFs hinder their further application. By this, the designs of MOF‐based aerogels, hydrogels, membranes are effective ways to solve this problem. Graphene, silica, synthetic polymer and cellulose are the commonly used raw materials for fabricating MOF‐based aerogels, hydrogels, and membranes. Among them, cellulose and its derivatives are the best candidates to support the powdered MOFs from the perspectives of economy, environmental protection and property. This review focuses on discussing the advantages of MOF@cellulose hybrids in applications such as water treatment, antibacterial, gas separation and adsorption, energy storage, drug delivery, catalysis, and other smart composites. MOF@cellulose‐based aerogels, hydrogels and membranes can provide valuable guidance for investigating the practical application of MOFs in terms of processability, reusability, stability and easiness in handling.

A Highly Efficient Luminescent Metal–Organic Framework with Strong Conjugate Unit for Sensing Small Molecules

“…Metal–organic frameworks (MOFs) have been established to be promising materials, because of their adjustable structures and topologies, permanent porosity, good catalytic performances and expected luminescent features. [ 22‐24 ] More and more luminescent metal–organic framework (LMOF) materials have been used as chemical sensors. [ 25‐29 ] Some have been reported to show excellent detection ability for TC, BZ and/or UA.…”

CelloZIFPaper: Cellulose-ZIF Hybrid Paper for Heavy Metal Removal and Electrochemical Sensing

“…Porous materials [1,2] such as Metal-organic frameworks (MOFs) [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] and zeolitic imidazolate frameworks (ZIFs) are hybrid porous materials consisting of metal ions connected with organic linkers [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. Processing MOFs using template materials gives rise to a new class of mixed materials that combines the advantages of both components [21][22][23][24][25][26].…”

“…Porous materials [1,2] such as Metal-organic frameworks (MOFs) [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] and zeolitic imidazolate frameworks (ZIFs) are hybrid porous materials consisting of metal ions connected with organic linkers [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. Processing MOFs using template materials gives rise to a new class of mixed materials that combines the advantages of both components [21][22][23][24][25][26]. In recent years, hybridizing biopolymers such as cellulose with MOFs has resulted in the development of cellulose-MOF functional materials, which opens up vast new advantages in terms of high performance, good processability, and good sustainability [26].…”

Artificial and Semi‐artificial Photosynthesis (AP and SAP) Systems Based on Metal‐Organic Frameworks

“…Metal organic frameworks (MOFs), a class of porous crystalline materials consisting of metallic nodes (metal ions or clusters) and organic linkers, have been widely considered to be one of the most promising platforms for artificial photosynthesis and semi‐ artificial photosynthesis due to their large specific surface area, high porosity, and the capability of precisely designing and tailoring structures at an atomic level for integrating photosensitizer and catalytic sites into a single catalyst. [ 29‐35 ] Generally, when MOFs are used as photocatalysts in artificial photosynthesis systems, the chromophores among MOFs usually act as photosensitizers to absorb photons, then electrons are excited from the highest occupied molecular orbital (HOMO) to the lowest unoccupied molecular orbital (LUMO) of the ligands leaving holes in the HOMO and resulting in separated photogenerated charges, namely the ligand‐localized exciton can be converted into a charge‐separate state. [ 36 ] The photogenerated charges can be transferred to the metal nodes by the classical ligand‐to‐metal charge transfer (LMCT) mechanism, thereby participating in the redox reactions.…”