Nanoreactor Based on Macroporous Single Crystals of Metal-Organic Framework

作者：Wang, Shuhai; Fan, Yanan; Teng, Jun; Fan, Yan-Zhong; Jiang, Ji-Jun; Wang, Hai-Ping; Grutzmacher, Hansjorg; Wang, Dawei^*; Su, Cheng-Yong^*

来源：Small, 2016, 12(41): 5702-5709.

DOI：10.1002/smll.201601873

• HETEROGENEOUS CATALYSTS
• GOLD NANOPARTICLES
• SILICA NANOREACTOR
• IN-VIVO
• HOLLOW
• SHELL
• FUNCTIONALIZATION
• NANOSTRUCTURES
• ENCAPSULATION
• NANOCRYSTALS

A sacrificial template strategy is developed for the synthesis of yolk-shell Au@ZIF-8 nanoreactor. The Au@ZIF-8 nanoreactor possesses single-crystalline metal-organic framework (MOF) shell with intrinsic monodisperse micropores and introduced macropores. In each of the macropores, one Au NP is encapsulated to form a nanoreactor unit. The quantity of the reactor units in the MOF shell can be readily regulated. Such structure features of the Au@ZIF-8 nanoreactor facilitate the size selectivity of reactants, the accessibility of Au nanoparticles to reactants, and the mass transfer of reactants and products. As a result, the Au@ZIF-8 nanoreactor delivers excellent size selectivity, enhanced conversion, and good cycling stability when used to catalyze the aerobic oxidation of alcohols with different molecular size.

• 出版日期2016-11-2
• 单位中山大学