The team of Professor Liu Xiaohe from the School of Materials Science and Engineering of Central South University recently published the latest research results on electrocatalytic materials in the internationally renowned academic journals, Journal of the American Chemical Society (JACS, IF = 14.357) and Advanced Energy Materials (IF = 24.884).
In order to deal with the fossil energy crisis and the arising environmental pollution, there is an urgent need to carry out scientific and technological innovations in green new energy. The preparation of hydrogen and oxygen by electrolysis/splitting of water can realize the fuelization of water. However, the efficient splitting of water mainly depends on precious metal-based catalysts, and their high cost makes it difficult to achieve industrialization. Therefore, it is particularly important to find cheap electrocatalytic materials. The layered hydroxides of cheap transition metals such as iron, cobalt and nickel and two-dimensional metal-organic frameworks (2D MOFs) materials have structural diversity and functional controllability, showing a broad application prospect.
Based on rational design and bottom-up synthesis on the structural topology, the team of Liu Xiaohe successfully obtained hexagonal 2D MOF nanoplate with a regular structure, and achieved adjustable and controllable thickness of the hexagonal nanoplate. The study found that the frame structure of the hexagonal 2D MOF nanoplate can adsorb Fe ions and form a Ni-Fe@C composite catalyst through the pyrolysis process, which greatly improved its electrocatalytic performance. This research promotes the design and synthesis of 2D MOFs nanomaterials based on topology, and provides new ideas for the controllable synthesis and electrocatalysis of 2D MOFs nanomaterials. The results were published in Journal of the American Chemical Society. Central South University is the first author unit, Lin Yifan, a PhD student of Central South University is the first author, and Professor Liu Xiaohe from Central South University, Professor Cao Yijun from Zhengzhou University, and Professor Renzhi MA from the National Institute for Materials Science, Japan are the co-corresponding authors.
(Synthesis, characterization and structure diagram of hexagonal 2D MOF nanoplate)
In addition, based on the innovative work in the field of transition metal layered hydroxides, Professor Liu Xiaohe’s team was invited to publish a Review article in Advanced Energy Materials. This article mainly summarizes the research progress in the design synthesis route and functional application of transition metal layered hydroxides and their derivatives, especially introduces the team’s recent research results in structural control, liquid phase synthesis, chemical stripping, topological transformation, superlattice structure assembly and performance of layered hydroxides, and points out the main challenges and development prospects in the preparation and application of layered hydroxides. Central South University is the first author unit, Distinguished Associate Professor Chen Gen from Central South University is the first author, and Professors Liu Xiaohe and Wangjun from Central South University and Professor Renzhi MA from the National Institute for Materials Science, Japan are the co-corresponding authors.
Related work was supported by the National Natural Science Foundation of China, the Science Fund for Creative Research Groups of the National Natural Science Foundation of Hunan Province, the Hundred Talents Program of Hunan Province, Central South University, and the State Key Laboratory for Powder Metallurgy.
Source: School of Materials Science and Engineering