Journal
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
Volume 81, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pecs.2020.100870
Keywords
Metal-organic frameworks (MOFs); Electronic/optical behaviors; Computational analysis; Modulation photosensitization; Environmental/energy photocatalysis; Kinetic/thermodynamic stability
Funding
- R&D Center for Green Patrol Technologies through the R&D for Global Top Environmental Technologies - Ministry of the Environment [2018001850 0 01]
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2016R1E1A1A01940995]
- SERB [YSS/2015/00212]
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Progress in the design, synthesis, and modification of metal-organic frameworks (MOFs) has immensely helped expand their applications in a wide variety of research fields. Such developments offered great opportunities for upgrading their efficiencies in diverse photocatalytic applications (e.g., N-2/CO2 reduction, H-2 generation, organic synthesis, and environmental remediation) through enhanced conversion/storage of solar energy. The MOF-based photocatalytic platforms are, nonetheless, subject to many practical problems (e.g., inapplicability for industrial upscaling and thermodynamic instability under environmental conditions). In this review, the effects of synthesis/modification strategies on MOF photocatalysis have been discussed with respect to the type of inorganic nodes, the modulation of organic ligands, and the pre-/post-synthesis modification in MOF networks (i.e., MOF-based composite). Particular emphasis was placed on the technical advances achieved in the photoelectronic/catalytic performances of MOFs in multiple energy/environmental (redox) reactions based on both experimental and theoritical analyses. Further, the technical merits/disadvantages of MOF photocatalysts (in terms of structural defects, light absorption, active sites, and kinetic/thermodynamic stability) have been evaluated in relation to quantum efficiency and charge transfer mechanisms in various photo-redox reactions. The pursuit of strategies for enhanced kinetic stability of MOFs have also been highlighted based on the nature/strength of coordination modes, the inertness of metal centers, and the functionality of ligand types. Lastly, the current limitations of MOF-based photocatalysts are addressed with respect to their practical applications at industrial scales along with a discussion on their future use. (c) 2020 Elsevier Ltd. All rights reserved.
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