Li Shuke, Ye Lin, Cen Wanglai, Sun Dengrong
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China.
College of Chemistry, Sichuan University, Chengdu 610065, P. R. China.
Nanoscale. 2025 Mar 13;17(11):6308-6328. doi: 10.1039/d4nr04433a.
Clean energy production and CO utilization have attracted increasing interest. Electrocatalysis represents an effective way to produce green hydrogen from water and reduce CO to valuable compounds. However, for either the hydrogen evolution reaction (HER) or the CO reduction reaction (CORR), the reaction efficiency is significantly limited by the slow kinetics of the oxygen evolution reaction (OER) at the anode, which consumes most of the input energy. Therefore, great efforts have been made to replace the OER with organic oxidation reactions at the anode to decrease the reaction energy barrier. Biomass has an advantage of broad source, and when it is employed as an OER alternative in the anode oxidation reactions, not only can the reduction reaction efficiency at the cathode including the HER and CORR be enhanced but high-value chemicals can also be obtained, representing an attractive OER alternative. This review comprehensively summarizes the recent achievements in electrocatalytic biomass upgrading coupled with the HER and CORR, cataloged based on the type of biomass. The design of electrocatalysts for such coupled reaction systems is discussed. Finally, the challenges and perspectives in the field of this energy-saving and value-added coupling system are provided to inspire more efforts in pushing forward the development of this field.
清洁能源生产和一氧化碳利用已引起越来越多的关注。电催化是一种从水中生产绿色氢气并将一氧化碳还原为有价值化合物的有效方法。然而，对于析氢反应（HER）或一氧化碳还原反应（CORR），反应效率都受到阳极析氧反应（OER）缓慢动力学的显著限制，该反应消耗了大部分输入能量。因此，人们已做出巨大努力，用阳极的有机氧化反应取代OER，以降低反应能垒。生物质具有来源广泛的优势，当它用作阳极氧化反应中的OER替代物时，不仅可以提高包括HER和CORR在内的阴极还原反应效率，还能获得高价值化学品，是一种有吸引力的OER替代物。本文综述全面总结了电催化生物质升级与HER和CORR耦合的最新成果，并根据生物质类型进行了分类。讨论了此类耦合反应系统的电催化剂设计。最后，给出了该节能增值耦合系统领域的挑战和前景，以激励更多人努力推动该领域的发展。
