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Cyclodextrin Metal–Organic Frameworks for Catalytic Applications: Current Research and Future Outlook
1  Nanotechnology Research Laboratory, Department of Chemical Engineering, University of the Philippines Diliman, Quezon City, 1101 Philippines
2  Department of Chemical Engineering, University of Santo Tomas, España Blvd., Sampaloc, Manila, 1015 Philippines
Academic Editor: Giancarlo Cravotto

Abstract:

Catalysis is a fundamental process in chemistry and industry, driving the transformation of reactants into valuable products while minimizing energy input and waste generation. The quest for efficient and selective catalysts has led to the emergence of Cyclodextrin Metal–Organic Frameworks (CD-MOFs), a unique class of porous materials combining the advantages of cyclodextrins and metal–organic frameworks. CD-MOFs are gaining recognition for their distinctive capabilities in catalysis, offering benefits in terms of catalytic activity, selectivity, and sustainability. This paper presents an overview of current research on CD-MOFs in catalysis, emphasizing their application as hosts for catalytic materials and as catalysts themselves. The exploration includes studies on the confinement of redox-active monomers within CD-MOFs, resulting in controlled polymerization and enhanced electrical conductivity. Additionally, this paper discusses the encapsulation of photocatalysts in CD-MOFs, leading to stable and active hybrid materials for selective reduction processes. Further investigations delve into the nanoconfined environment of CD-MOFs, showcasing their ability to influence the regio- and stereoselectivity of photodimerization reactions. The synthesis of bimetallic nanoparticles within CD-MOFs is also explored, highlighting their potential in catalytic applications with enhanced stability and recyclability. Despite significant progress, research gaps persist, necessitating a deeper understanding of the structure–function relationships within CD-MOFs. Mechanistic insights into the catalytic processes, scalable synthesis methods, stability under catalytic conditions, recyclability, and diversification of catalytic functions are identified as critical areas for future exploration. This paper concludes by envisioning the future of CD-MOFs in catalysis, emphasizing tailored structures for specific reactions, multifunctionality, sustainability, industrial integration, and the exploration of novel catalytic frontiers in challenging environments. The catalytic prowess of CD-MOFs hold promise for contributing to sustainable and efficient chemical processes, ushering in a new era of innovation at the intersection of materials science and catalysis.

Keywords: cyclodextrin metal-organic frameworks; catalysis

 
 
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