Lignin as a multifunctional photocatalyst for solar-powered biocatalytic oxyfunctionalization of C–H bonds

Kim, Jin-Hyun; Nguyen, Trang Vu Thien; Kim, Yong Hwan; Hollmann, Frank; Park, Chan Beum

doi:10.1038/s44160-022-00035-2

Cited by 54 publications

(55 citation statements)

References 46 publications

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“…Moreover, other research directions such as coupling solar-driven H 2 O 2 production with biomass refinery or organic synthesis to generate value-added compounds should also be conducted as this could potentially lower the cost toward large-scale production of H 2 O 2 . 97,98 Over the past decade, significant progress has been made in the rational design of polymer photocatalysts toward solardriven H 2 O 2 production. The SCC efficiencies have already become comparable to those reported in photocatalytic overall water splitting.…”

Section: ■ Perspective and Outlookmentioning

confidence: 99%

“…In photocatalytic water splitting, it has been widely accepted that the solar-to-hydrogen conversion efficiency of 10% should suffice the requirement for large-scale production of H 2 from H 2 O. , Therefore, the technical and economic feasibility of centralized photosynthesis of H 2 O 2 should be rigorously analyzed to provide a targeting SCC efficiency for the community. Moreover, other research directions such as coupling solar-driven H 2 O 2 production with biomass refinery or organic synthesis to generate value-added compounds should also be conducted as this could potentially lower the cost toward large-scale production of H 2 O 2 . , …”

Section: Perspective and Outlookmentioning

confidence: 99%

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Reaction Pathways toward Sustainable Photosynthesis of Hydrogen Peroxide by Polymer Photocatalysts

Cheng

Wang

et al. 2022

Chem. Mater.

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Harnessing solar energy to generate hydrogen peroxide (H 2 O 2 ) from H 2 O and O 2 via artificial photosynthesis is an attractive route, as this approach only uses sunlight as the energy input. Organic polymers have emerged as a promising class of materials for solar-driven H 2 O 2 production, owing to their virtually unlimited molecular building blocks and rich bondforming reactions. This distinctive feature leads to the existence of different reaction pathways characterized by different electron transfer numbers. For the overall photosynthesis of H 2 O 2 , the O 2 reduction reaction and the H 2 O oxidation reaction must occur concurrently. Thus, in-depth insights into these reaction pathways are crucial for solar-driven H 2 O 2 production, with the eventual aim of steering these pathways to optimize efficiency. In this perspective, we primarily focus on the state-of-the-art progress in developing polymer photocatalysts for the overall photosynthesis of H 2 O 2 via coupling different O 2 reduction and H 2 O oxidation reactions. We also present key challenges and opportunities in developing polymer photocatalysts for H 2 O 2 production in the future. Organic polymers offer an ample molecular-level design space. They have now found extensive applications in solar-driven photochemical reactions. Therefore, this perspective serves as a guideline for designing polymer photocatalysts toward sustainable photosynthesis of H 2 O 2 and has significant implications for the future development of polymer materials in the broad area of solar-to-chemical energy conversion research.

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Section: ■ Perspective and Outlookmentioning

confidence: 99%

Section: Perspective and Outlookmentioning

confidence: 99%

Reaction Pathways toward Sustainable Photosynthesis of Hydrogen Peroxide by Polymer Photocatalysts

Cheng

Wang

et al. 2022

Chem. Mater.

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“…This year Kim et al identified lignin as a multifunctional photocatalyst for such as in situ H 2 O 2 formation through H 2 O oxidation and O 2 reduction. 99 Particularly appealing is the intrinsic hydroxyl radial-scavenging activity enabling more robust photoenzymatic cascade reactions without the need for spatial separation of both catalysts (Fig. 6a).…”

Section: Photocatalytic Platforms For In Situ H2o2 Generationmentioning

confidence: 99%

Light-driven biocatalytic oxidation

et al. 2022

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“…Approximately 50 million tons of KL are produced in the pulping industry per year, of which 95% are discarded or burned during bio-refining processes due to its recalcitrant nature. 2 The direct combustion of KL releases many persistent organic pollutants causing serious environmental pollution. 3 Therefore, further conversion is a pivotal step for the valorization of KL but remains a challenge.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient catalytic transfer hydrogenolysis for the conversion of Kraft lignin into bio-oil over heteropoly acids

Zhang

2022

Green Chem.

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Lignin as a multifunctional photocatalyst for solar-powered biocatalytic oxyfunctionalization of C–H bonds

Cited by 54 publications

References 46 publications

Reaction Pathways toward Sustainable Photosynthesis of Hydrogen Peroxide by Polymer Photocatalysts

Reaction Pathways toward Sustainable Photosynthesis of Hydrogen Peroxide by Polymer Photocatalysts

Light-driven biocatalytic oxidation

Highly efficient catalytic transfer hydrogenolysis for the conversion of Kraft lignin into bio-oil over heteropoly acids

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