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July 20, 2026ACS Sustainable Chemistry & EngineeringOpen Access

Amorphous Carbon-Rich Carbon-Nitride-Based Photocatalyst for Selective C−C Bond Cleavage in Lignin β-O-4 Linkages

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Authors

CLChun-Yin LauXLXinwei LiYZYanlin Zhang

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Overview

Randomized trial demonstrates selective C−C bond cleavage in lignin, indicating a metal-free photocatalytic platform.

Key Points

  • The aim is to develop a photocatalyst that enables selective C−C bond cleavage in lignin model compounds.
  • Prepared an amorphous carbon-rich carbon nitride photocatalyst by nitric acid treatment and nitrogen annealing.
  • Conducted reactions using 1.5 g L −1 of the photocatalyst in acetonitrile under 9 W blue LED light.
  • Analyzed products for C−C bond scission and by-product formation during photocatalytic depolymerization of lignin.
  • Achieved 93.1% selectivity for benzaldehyde from the cleavage of 2-POE with a reaction rate of 2.55 h −1.
  • Demonstrated ring-opening reactions producing fumaric and maleic acids as by-products.
  • Confirmed effective β-O-4 bond cleavage in lignin model compounds leading to low-molecular-weight dicarboxylic acids.

Cite This Study

Lau et al. (2026) studied this question.

synapsesocial.com/papers/6a5dba128bd453d3397ab44bhttps://doi.org/10.1021/acssuschemeng.6c00052
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