Electrocatalytic Lignin Valorization via Enhanced H₂O₂ Generation Using a MWNCT‐Modified Gas Diffusion Electrode
The electrocatalytic valorization of lignin provides a sustainable route to valuable chemicals under mild conditions, yet achieving high efficiency and selectivity remains challenging. Here, we develop gas diffusion electrodes (GDEs) modified with few-layer graphene (GR) and multi-walled carbon nanotubes (MWCNT) to enhance the oxygen reduction reaction (ORR) for efficient hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) generation. The MWCNT-modified GDE exhibits the highest surface area and conductivity, achieving over 80 % selectivity for H<sub>2</sub>O<sub>2</sub> via the two-electron ORR pathway. Electrochemical lignin depolymerization using this optimized GDE yields 72.3 % low-molecular-weight aromatic compounds within 1 h. The MWCNT-GDE demonstrates exceptional durability, maintaining stable performance across ten consecutive cycles. This work highlights the potential of MWCNT-modified electrodes to advance scalable electrochemical lignin valorization through in-situ H<sub>2</sub>O<sub>2</sub> generation.
Authors
- Junhua Meng (ORCID: https://orcid.org/0000-0001-8952-3278)
- Haomin Jiang (ORCID: https://orcid.org/0000-0002-4990-2393)
- Meng Song (ORCID: https://orcid.org/0000-0003-3084-993X)
- Lei Wang (ORCID: https://orcid.org/0000-0003-4128-687X)
- Shuangyan Liu (ORCID: https://orcid.org/0000-0001-7477-0137)
- Yongmei Chen (ORCID: https://orcid.org/0000-0003-1386-1574)
- Mingli Jiao (ORCID: https://orcid.org/0000-0003-2184-2066)
Institutions
- Zhongyuan University of Technology (CN)
- Henan Academy of Sciences (CN)
- New Technology (Israel) (IL)
- Beijing University of Chemical Technology (CN)
Publication Details
- Journal
- ChemPlusChem
- Published
- 2025-02-20
- DOI
- https://doi.org/10.1002/cplu.202400769
- Citations
- 4
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 1.45