Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
Energy Conversion Engineering Laboratory, Institute of Regional Innovation (IRI), Hirosaki University, 3-Bunkyocho, Hirosaki, 036-8561, Japan.
Adv Sci (Weinh). 2023 May;10(13):e2207519. doi: 10.1002/advs.202207519. Epub 2023 Mar 3.
Transition-metal-based layered double hydroxides (TM-LDHs) nanosheets are promising electrocatalysts in the renewable electrochemical energy conversion system, which are regarded as alternatives to noble metal-based materials. In this review, recent advances on effective and facile strategies to rationally design TM-LDHs nanosheets as electrocatalysts, such as increasing the number of active sties, improving the utilization of active sites (atomic-scale catalysts), modulating the electron configurations, and controlling the lattice facets, are summarized and compared. Then, the utilization of these fabricated TM-LDHs nanosheets for oxygen evolution reaction, hydrogen evolution reaction, urea oxidation reaction, nitrogen reduction reaction, small molecule oxidations, and biomass derivatives upgrading is articulated through systematically discussing the corresponding fundamental design principles and reaction mechanism. Finally, the existing challenges in increasing the density of catalytically active sites and future prospects of TM-LDHs nanosheets-based electrocatalysts in each application are also commented.
基于过渡金属的层状双氢氧化物（TM-LDHs）纳米片是可再生电化学能量转换系统中很有前途的电催化剂，被视为贵金属基材料的替代品。在这篇综述中，我们总结和比较了有效且简便的策略，以合理设计 TM-LDHs 纳米片作为电催化剂，例如增加活性位点的数量、提高活性位点的利用率（原子级催化剂）、调节电子构型和控制晶格面。然后，通过系统地讨论相应的基本设计原则和反应机制，阐述了这些制备的 TM-LDHs 纳米片在氧气析出反应、氢气析出反应、尿素氧化反应、氮气还原反应、小分子氧化和生物质衍生物升级中的应用。最后，还对增加催化活性位点密度的现有挑战以及 TM-LDHs 纳米片基电催化剂在每种应用中的未来前景进行了评论。
