Zhang Peng, Lu Xue Feng, Nai Jianwei, Zang Shuang-Quan, Lou Xiong Wen David
School of Chemical and Biomedical Engineering Nanyang Technological University 62 Nanyang Drive Singapore 637459 Singapore.
College of Chemistry and Molecular Engineering Zhengzhou University Henan 450001 P. R. China.
Adv Sci (Weinh). 2019 Jul 18;6(17):1900576. doi: 10.1002/advs.201900576. eCollection 2019 Sep 4.
Development of efficient electrocatalysts is a crucial requirement to build water splitting systems for the production of clean and sustainable fuels. This goal could be achieved by fine-tuning the composition and structure of the electrocatalytic materials. Here, a facile self-templated synthetic strategy is developed for the fabrication of hierarchical Co-Fe oxyphosphide microtubes (MTs). Fe-based metal-organic compound microrods are first synthesized as the self-sacrificing template. Afterward, the Fe-based precursors are converted into hierarchical Co-Fe layered double hydroxide MTs through a hydrothermal approach, which are then transformed into the hierarchical Co-Fe oxyphosphide MTs by a phosphidation treatment. Benefiting from the synergistic effect of the compositions and the advantages of the hierarchical hollow structure, the obtained electrocatalyst exhibits enhanced performance for overall water splitting.
开发高效的电催化剂是构建用于生产清洁和可持续燃料的水分解系统的关键要求。通过微调电催化材料的组成和结构可以实现这一目标。在此，开发了一种简便的自模板合成策略来制备分级结构的钴铁氧磷微管（MTs）。首先合成铁基金属有机化合物微棒作为自牺牲模板。随后，通过水热法将铁基前驱体转化为分级结构的钴铁层状双氢氧化物微管，然后通过磷化处理将其转化为分级结构的钴铁氧磷微管。得益于组成的协同效应和分级中空结构的优势，所制备的电催化剂在全水分解方面表现出增强的性能。
