Kavitha S, Yukesh Kannah Ravi, Ginni G, Lise Appels, Mieczysław Łapkowski, Yogendra Kumar Mishra, Palanivelu Kandasamy, Palanichamy Rajaguru, Pugalenthi Velan and Rajesh Banu Jeyakumar*,
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Recent Advances in Photocatalytic Conversion of Lignocellulosic Biomass: Routes, Limitations, and Outlook
Lignocellulosic biomass (LCB) is an abundant resource for recovering fuels and value-added products. Despite extensive investigations and research, the complete unlocking of LCB potency has yet to be accomplished. The photocatalytic conversion of LCB, which utilizes renewable solar light under mild conditions, has been recognized as the hottest current research topic receiving attention for sustainable development. Numerous technical challenges have been identified for effective practical implementations. In brief, photocatalytic conversion oxidizes Cβ─O/Cα─Cβ linkages in LCB to recover fuels and biochemicals. From a chemical viewpoint, optimizing the exclusive interaction of oxidizing radical groups and radical intermediates through suitable regulation of their type and recovery is crucial for selectively generating desirable products. This review provides recent insights into the mechanistic pathways of the selective conversion of LCB via reactive oxygen species (ROS) behavior optimization and system design. In addition, this review highlights the up-to-date achievements in the photocatalysis of LCB and its components as well as the selective oxidation of the prominent linkages of lignin, native biomass valorization, cellulose, hemicellulose, and its derivatives. Further, upgrading of bioplatforms and electricity generation via LCB photocatalysis is discussed in detail as a novel approach. The prospects and opportunities of using LCB photocatalysis to improve the viability of photocatalytic conversion of LCB are also discussed.
期刊介绍：
）ACS Engineering Au is an open access journal that reports significant advances in chemical engineering applied chemistry and energy covering fundamentals processes and products. The journal's broad scope includes experimental theoretical mathematical computational chemical and physical research from academic and industrial settings. Short letters comprehensive articles reviews and perspectives are welcome on topics that include:Fundamental research in such areas as thermodynamics transport phenomena (flow mixing mass & heat transfer) chemical reaction kinetics and engineering catalysis separations interfacial phenomena and materialsProcess design development and intensification (e.g. process technologies for chemicals and materials synthesis and design methods process intensification multiphase reactors scale-up systems analysis process control data correlation schemes modeling machine learning Artificial Intelligence)Product research and development involving chemical and engineering aspects (e.g. catalysts plastics elastomers fibers adhesives coatings paper membranes lubricants ceramics aerosols fluidic devices intensified process equipment)Energy and fuels (e.g. pre-treatment processing and utilization of renewable energy resources; processing and utilization of fuels; properties and structure or molecular composition of both raw fuels and refined products; fuel cells hydrogen batteries; photochemical fuel and energy production; decarbonization; electrification; microwave; cavitation)Measurement techniques computational models and data on thermo-physical thermodynamic and transport properties of materials and phase equilibrium behaviorNew methods models and tools (e.g. real-time data analytics multi-scale models physics informed machine learning models machine learning enhanced physics-based models soft sensors high-performance computing)
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