Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 19, Pages 10386-10394Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta01135c
Keywords
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Funding
- National Key Basic Research Program of China (973 Program) [2013CB834800, 2013CB632403]
- Ministry of Science and Technology of China [2012DFH40090]
- Natural Science Foundation of China [21371175]
- Beijing Natural Science Foundation [2142033]
- CAS-Croucher Funding Scheme for Joint Laboratories
- Chinese Academy of Sciences [KGZD-EW-T05]
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A molecular photosensitizer [Ru(dcbpy)(bpy)(2)](2+) (dcbpy = 2,2'-bipyridyl-5,5'-dicarboxylic acid) and a proton reduction catalyst Pt(dcbpy)Cl-2 were successfully incorporated into a highly robust metal-organic framework (MOF) of Zr(IV)(6)O-4(OH)(4)(bpdc)(6) (bpdc = 4,4'-biphenyldicarboxylic acid) by making use of a mix-and-match approach. The molecular integrity of the Ru and Pt complexes within the MOFs was demonstrated by a variety of techniques, including XRD, BET, TGA, SEM, TEM, HAADF-STEM, EDX, DRUS and XPS. This di-component Ru-Pt@UIO-67 MOF assembly allows a facile arrangement of the photosensitizer and the reduction catalyst with close spatial proximity, promotes the electron transfer between them, and thus leads to a significantly improved hydrogen evolution activity in aqueous solution at pH 5.0 upon visible light irradiation. This Ru-Pt@UIO-67 system represents the first example of MOFs functionalized with two different transition metal complexes, which can be used as a photosensitizer and catalyst, respectively, for hydrogen generation from water.
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