The electrocatalytic production of hydrogen peroxide (H2O2) through the two‐electron oxygen reduction reaction (2e− ORR) has garnered significant research attention in recent years due to its numerous appealing advantages, such as being eco‐friendly and exhibiting high energy conversion efficiency. Metal‐free carbon materials with specific catalytic sites have been recognized as potential electrocatalysts for 2e− ORR; however, the design of highly efficient catalysts with well‐defined structures and long‐term stability for large‐scale H2O2 production remains unsatisfactory. In this study, three covalent organic frameworks (COFs) – imine‐linked LZU‐1, oxazole‐linked LZU‐190, and thiazole‐linked LZU‐190(S), are successfully synthesized to explore their catalytic activity in electrocatalytic H2O2 production. Among these, the carbon sites LZU‐190(S) are predominantly activated by the introduced adjacent heteroatoms via electronic effects, resulting in much higher H2O2 selectivity compared to the oxazole and imine linkages. This work provides new insights into developing COFs‐based electrocatalysts for efficient H2O2 generation.
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Funding Info:
This research is supported by core funding from: A*STAR Career Development Fund
Grant Reference no. : 22D800034
This research is supported by core funding from: A*STAR Career Development Fund
Grant Reference no. : C233312013
National Natural Science Foundation of China (Grant No. 22309033), the Guizhou Provincial Science and Technology Foundation (Grant No. [2024] ZK General 425), the Youth Scientific Research Project of Guizhou
Provincial Education Department (Grant No. [2022] 125)
Description:
This is the peer reviewed version of the following article: Yang, Z., Zuo, L., Luo, B., Yang, C., Wang, S., Chew, L., Zhu, J., & Zhang, X. (2024). Designing Heterocyclic Covalent Organic Frameworks with Tunable Electronic Structures for Efficient Electrosynthesis of Hydrogen Peroxide. Small, 20(45). Portico. https://doi.org/10.1002/smll.202403859
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