[Figure 1] Schematic diagram illustrating the synthesis process of lignin-based carbon catalysts (IMAGE)
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This process involves using lignin, a sustainable biopolymer, as a precursor to form a cross-linked lignin structure via the Friedel-Crafts reaction, followed by a carbonization process to produce a lignin-based carbon catalyst. The composition of oxygen functional groups on the carbon surface varies depending on the carbonization temperature, and the selectivity for hydrogen peroxide production in the oxygen reduction reaction changes through the regulation of these functional groups. In particular, C=O functional groups induce high hydrogen peroxide selectivity, whereas OH functional groups tend to inhibit selectivity.
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Korea Institute of Science and Technology
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