The assembly of two-dimensional (2D) nanosheets into three-dimensional (3D) well-organized superstructures is one of the key topics in materials chemistry and physics, due to their potential applications in various fields. Herein, starting from the crystalline metal-organic framework (MOF) particles, a spherical superstructure consisting of metal-organic framework nanosheets (SS-MOFNSs) is synthesized via a simple solvothermal transformation process. After pyrolysis and nitrogenization in ammonia, the SS-MOFNSs is further transformed into the spherical superstructure consisting of boron nitride nanosheets (SS-BNNSs), which preserve the original spherical superstructure morphology. Taking advantage of this unique superstructure, the resulting SS-BNNSs exhibit excellent catalytic activity for selective oxidative dehydrogenation of propane to produce propylene and ethylene. The results of this work provide a novel synthetic strategy to fabricate 3D spherical superstructures consisting of 2D nanosheets for high-performance applications in catalysis, energy storage, as well as other related fields.

中文翻译：

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源自含硼金属有机骨架的氮化硼纳米片的球形超结构

由于其在各个领域的潜在应用，将二维 (2D) 纳米片组装成三维 (3D) 组织良好的超结构是材料化学和物理学中的关键课题之一。在此，从结晶金属有机骨架 (MOF) 颗粒开始，通过简单的溶剂热转化过程合成了由金属有机骨架纳米片 (SS-MOFNS) 组成的球形超结构。在氨中热解和氮化后，SS-MOFNSs 进一步转化为由氮化硼纳米片 (SS-BNNSs) 组成的球形超结构，保留了原始的球形超结构形态。利用这个独特的上层建筑，所得SS-BNNSs对丙烷选择性氧化脱氢生产丙烯和乙烯表现出优异的催化活性。这项工作的结果为制造由 2D 纳米片组成的 3D 球形超结构提供了一种新的合成策略，用于催化、储能以及其他相关领域的高性能应用。