A Strategy to Boost H-2 Generation Ability of Metal-Organic Frameworks: Inside-Outside Decoration for the Separation of Electrons and Holes

作者：Wang, Yang; Ling, Lianjie; Zhang, Wei; Ding, Kejian; Yu, Yu; Duan, Wubiao; Liu, Bo^*

来源：Chemsuschem, 2018, 11(4): 666-671.

DOI：10.1002/cssc.201702316

• graphene oxide
• hydrogen evolution
• nanoparticles
• photocatalysis
• synergistic effect

Inhibiting the recombination of electron and holes plays an essential role in photocatalytic process, particularly for metal-organic frameworks (MOFs), which had long been anticipated as high-efficient photocatalysts. Herein, we introduce a new strategy to make efficient separation of electrons and holes for the MOF-based photocatalyst, UiO-66-NH2. At first, encapsulation of Pt nanoparticles (NPs) into UiO-66-NH2 (Pt@U6N) to shorten the electrons transport distance inside of MOF crystals, then using graphene oxide to wrap the external surface of Pt@U6N to facilitate the electrons transfer on the surface. The designed structure was found to possess superior H-2-generation ability compared to only inside or outside decorated samples, highlighting that the enhanced property strongly correlates with the inhibited recombination of electrons and holes by the inside/outside modification strategy. These findings suggest a synergistic effect of Pt NPs and graphene oxide on UiO-66-NH2 and reveal a new modification strategy to enhance the catalytic activity of the photocatalysts.

• 出版日期2018-2-22
• 单位北京交通大学