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Issue 29, 2017
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Enhanced durability of an iridium-bipyridine complex embedded into organosilica nanotubes for water oxidation

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Abstract

Heterogeneous metal complex catalysts for the water oxidation reaction have ever been desired for the development of devices simulating photosynthesis. This paper describes the design of highly active and robust heterogeneous iridium complex catalysts for chemical water oxidation. The heterogeneous catalyst (Ir-BPy-NT) was prepared by the post-synthetic metalation of bipyridine-containing mesoporous organosilica nanotubes (BPy-NT) with an [IrCp*Cl(μ-Cl)]2 (Cp* = η5-pentamethylcyclopentadienyl) complex. The as-prepared Ir-BPy-NT catalyst showed enhanced durability with high reaction activity compared to the analogous homogeneous and the conventional heterogeneous ones, due to the stable nanotube structures as well as the isolated active sites. The unique one-dimensional nanotubes with large pore diameters can also reduce the diffusion limitation and facilitate the transport of reactants and products during reactions.

Graphical abstract: Enhanced durability of an iridium-bipyridine complex embedded into organosilica nanotubes for water oxidation

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Publication details

The article was received on 03 Jun 2017, accepted on 04 Jul 2017 and first published on 05 Jul 2017


Article type: Paper
DOI: 10.1039/C7DT02026K
Citation: Dalton Trans., 2017,46, 9369-9374
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    Enhanced durability of an iridium-bipyridine complex embedded into organosilica nanotubes for water oxidation

    S. Zhang, H. Wang, M. Li, J. Han, S. Inagaki and X. Liu, Dalton Trans., 2017, 46, 9369
    DOI: 10.1039/C7DT02026K

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