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Two-Dimensional Metal-Organic Frameworks with unique oriented layers for Oxygen Reduction Reaction:Tailoring the Activity through Exposed Crystal Facets

引用

CCS Chemistry 2022年第5期4卷 1633-1642页

作者： Yanzhi Wang Tu Sun Amir H.B.Mostaghimi Tiago J.Goncalves Zuozhong Liang Yuye Zhou Wei Zhang Zhehao Huang Yanhang Ma Rui Cao Samira Siahrostami Haoquan Zheng Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710119 School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210 Department of Chemistry University of CalgaryCalgaryAB T2N 1N4 School of Engineering Sciences in Chemistry Biotechnologyand HealthDepartment of ChemistryDivision of Applied Physical ChemistryAnalytical ChemistryKTH Royal Institute of TechnologySE-10691 Stockholm Department of Materials and Environmental Chemistry Stockholm UniversitySE-10691 Stockholm

As one of the most important families of porous materials,metal–organic frameworks(MOFs)have well-defined atomic *** provides ideal models for investigating and understanding the relationships between structures and catalytic activities at the molecular ***,the active sites on the edges of two-dimensional(2D)MOFs have rarely been studied,as they are less exposed to the ***,for the first time,we synthesized and observed that the 2D layers could align perpendicular to the surface of a 2D zeolitic imidazolate framework L(ZIF-L)with a leaf-like *** to this unique orientation,the active sites on the edges of the 2D crystal structure could mostly be exposed to the ***,when another layer of ZIF-L-Co was grown heteroepitaxially onto ZIF-L-Zn(ZIF-L-Zn@ZIF-L-Co),the two layers shared a common b axis but rotated by 90°in the ac *** demonstrated that we could control exposed facets of the 2D *** ZIF-L-Co with more exposed edge active sites exhibited high electrocatalytic activity for oxygen reduction *** work provides a new concept of designing unique oriented layers in 2D MOFs to expose more edge-active sites for efficient electrocatalysis.

关键词： unique oriented layer two-dimensional material metal-organic framework electrocatalyst oxygen reduction reaction

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