Cao Lei, Dai Pengcheng, Tang Jing, Li Dong, Chen Ruihua, Liu Dandan, Gu Xin, Li Liangjun, Bando Yoshio, Ok Yong Sik, Zhao Xuebo, Yamauchi Yusuke
Institute of New Energy, College of New Energy, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, P. R. China.
Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia.
J Am Chem Soc. 2020 May 13;142(19):8755-8762. doi: 10.1021/jacs.0c01023. Epub 2020 Apr 28.
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 are 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.
将二维（2D）纳米片组装成三维（3D）有序的超结构是材料化学和物理学的关键课题之一，因为它们在各个领域具有潜在应用。在此，从结晶金属有机框架（MOF）颗粒出发，通过简单的溶剂热转化过程合成了一种由金属有机框架纳米片组成的球形超结构（SS-MOFNSs）。在氨气中进行热解和氮化后，SS-MOFNSs进一步转化为由氮化硼纳米片组成的球形超结构（SS-BNNSs），其保留了原始的球形超结构形态。利用这种独特的超结构，所得的SS-BNNSs在丙烷选择性氧化脱氢制丙烯和乙烯反应中表现出优异的催化活性。这项工作的结果提供了一种新颖的合成策略，用于制造由二维纳米片组成的三维球形超结构，以用于催化、能量存储以及其他相关领域的高性能应用。
