Radical‐Mediated Photocatalysis for Lignocellulosic Biomass Conversion into Value‐Added Chemicals and Hydrogen: Facts, Opportunities and Challenges

Photocatalytic biomass conversion into high‐value chemicals and fuels is considered one of the hottest ongoing research and industrial topics toward sustainable development. In short, this process can cleave Cβ−O/Cα−Cβ bonds in lignin to aromatic platform chemicals, and further conversion of the pol...

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Bibliographic Details
Published in:Angewandte Chemie 2023-09, Vol.135 (36), p.n/a
Main Authors: Aboagye, Dominic, Djellabi, Ridha, Medina, Francesc, Contreras, Sandra
Format: Article
Language:English
Subjects:
Biomass
Chemicals
Chemistry
Conversion
Hydrogen
Intermediates
Lignocellulose
Optimization
Oxidation
Oxygen
Photocatalysis
Polysaccharides
Radical Oxygen Species
Saccharides
Substrates
Sustainable development
SWOT analysis
Systems design
Value-Added Chemicals
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Summary:Photocatalytic biomass conversion into high‐value chemicals and fuels is considered one of the hottest ongoing research and industrial topics toward sustainable development. In short, this process can cleave Cβ−O/Cα−Cβ bonds in lignin to aromatic platform chemicals, and further conversion of the polysaccharides to other platform chemicals and H2. From the chemistry point of view, the optimization of the unique cooperative interplay of radical oxidation species (which are activated via molecular oxygen species, ROSs) and substrate‐derived radical intermediates by appropriate control of their type and/or yield is key to the selective production of desired products. Technically, several challenges have been raised that face successful real‐world applications. This review aims to discuss the recently reported mechanistic pathways toward selective biomass conversion through the optimization of ROSs behavior and materials/system design. On top of that, through a SWOT analysis, we critically discussed this technology from both chemistry and technological viewpoints to help the scientists and engineers bridge the gap between lab‐scale and large‐scale production. This review discusses recent developments in the chemistry of photocatalytic biomass conversion into chemicals and fuels, emphasizing the role of experimental factors and materials design. A critical technological analysis to facilitate the scaling up of this technology is provided based on the reported research studies and industrial need.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.202301909