Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 18, Pages 20589-20595Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c04537
Keywords
metal-organic frameworks (MOFs); covalent organic frameworks (COFs); interfacial pores; hydrophobic; photocatalytic hydrogenation
Funding
- National Research Foundation (NRF) of the Korea - Korean government (MSIP) [NRF-2017R1A3B1023598]
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Converting solar energy to chemical energy via photocatalysis has attracted increasing interest. Simultaneously realizing efficient charge separation and fast reactant/product diffusion/transport is highly significant for improving the photocatalytic activity, which however is difficult. Herein, we reported an interfacially confined strategy by constructing interfacial pores as nanoreactors between metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) with controlled surface wettability for efficient photocatalysis. In the sandwich TiMOFs@Pt@DM-LZU1, interfacial pores formed between Ti-MOF@Pt and DM-LZU1, in which Pt nanoparticles (NPs) were encapsulated. The presence of Pt facilitates the charge separation on the photoactive Ti-MOF, while the hydrophobic porous DM-LZU1 shell promotes reactant enrichment. Interfacial pores acting as nanoreactors ensure fast electron and mass transport between the active Pt NPs and the concentrated reactants, leading to high photocatalytic activity. This work presents a new concept for the design of various photocatalysts with considerable activity.
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