Cs9[(γ-PW10O36)2Ru4O5(OH)(H2O)4], a new all-inorganic, soluble catalyst for the efficient visible-light-driven oxidation of water

Besson, Claire; Huang, Zhuangqun; Geletii, Yurii V.; Lense, Sheri; Hardcastle, Kenneth I.; Musaev, Djamaladdin G.; Lian, Tianquan; Proust, Anna; Hill, Craig L.

doi:10.1039/b926064a

Cited by 146 publications

(114 citation statements)

References 12 publications

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“…While Ru4PPOM proved capable of oxidizing water, the rate of photodriven water oxidation was approximately 20% lower than with Ru4SiPOM. 135 In an effort to integrate Ru4SiPOM into a PEC, Ru4SiPOM was attached to a TiO 2 nanocrystalline film via ruthenium(II) tris(4,4 0 -dicarboxcylic-2,2 0 -bipyridine). 136 This assembly was investigated spectroscopically and showed that electron transfer between Ru4SiPOM and the ruthenium dye was on the order of a few microseconds and competitive with back electron transfer from the TiO 2 electrode.…”

Section: Water Oxidation Catalystsmentioning

confidence: 99%

Design and development of photoanodes for water-splitting dye-sensitized photoelectrochemical cells

2013

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Dye sensitized solar cells (DSSCs) use low-cost materials, feature tunable molecular sensitizers, and exhibit quantum efficiencies near unity. These advantageous features can be exploited in the context of solar water splitting by functionalizing DSSCs with catalysts for water oxidation and reduction. This article will cover the development of photoanodes for water splitting DSSCs from the perspective of water oxidation catalysts, sensitizers, electron transfer mediators, photoanode materials, and system level design. Within each section we will endeavor to highlight critical design elements and how they can affect the efficiency of the overall system.

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Section: Water Oxidation Catalystsmentioning

confidence: 99%

Design and development of photoanodes for water-splitting dye-sensitized photoelectrochemical cells

2013

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“…There are some reports of photocatalytic water oxidation in homogeneous systems such as molecular ruthenium complexes [125][126][127][128][129][130][131][132][133][134][135], as well as earth abundant metal complexes [136][137][138] in the presence of sacrificial electron acceptors. In this case, a recently published mononuclear ruthenium complex shows TOF values up to 0.32 s −1 [139].…”

Section: Alternatives To Sacrificial Aminesmentioning

confidence: 99%

Conversion of CO2 via Visible Light Promoted Homogeneous Redox Catalysis

2012

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Abstract:This review gives an overview on the principles of light-promoted homogeneous redox catalysis in terms of applications in CO 2 conversion. Various chromophores and the advantages of different structures and metal centers as well as optimization strategies are discussed. All aspects of the reduction catalyst site are restricted to CO 2 conversion. An important focus of this review is the question of a replacement of the sacrificial donor which is found in most of the current publications. Furthermore, electronic parameters of supramolecular systems are reviewed with reference to the requisite of chromophores, oxidation and reduction sites.

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“…In order to see if catalytic performance could be enhanced, the same authors also synthesized and characterized an isostructural phosphorus-centered tetraruthenium- [55]. On this occasion, photocatalysis was evaluated under visible light illumination (420-520 nm) at pH 5.8 in a Na 2 SiF 6 buffer with an initial turnover frequency reaching 0.13 s 1 .…”

Section: Light-assisted Pom Pathways For Water Oxidationmentioning

confidence: 99%

Recent trends in the use of polyoxometalate-based material for efficient water oxidation

2011

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Polyoxometalates (POMs), with their attractive topological and electronic properties, have been demonstrated over the last few decades to be efficient catalysts for many reactions. In a new direction, POMs having a purely inorganic framework are now being explored as efficient catalysts for water oxidation. This review focuses on very recent developments of POM-based catalysts for water oxidation to O 2 . In the very extensive family of POMs, tetra-core sandwich-type Ru-and Co-containing POM complexes, namely [Ru 4 O 4 (OH) 2 (H 2 O) 4 (-SiW 10 O 36 ) 2 ] 10 and [Co 4 (H 2 O) 2 (-PW 9 O 34 ) 2 ] 10 exhibit the ability to facilitate water oxidation under electrocatalytic and/or photocatalytic conditions. However, it is concluded that much work still needs to be done to explain the catalytic mechanisms and optimize these catalytic systems. In addition, recent trends in using ionic liquids as media to modify the electrolytic environment and enhance water oxidation are highlighted.

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Cs9[(γ-PW10O36)2Ru4O5(OH)(H2O)4], a new all-inorganic, soluble catalyst for the efficient visible-light-driven oxidation of water

Abstract: The tetraruthenium-substituted polyoxometalate Cs(9)[(gamma-PW(10)O(36))(2)Ru(4)O(5)(OH)(H(2)O)(4)] was synthesized and structurally, spectroscopically and electrochemically characterized; it was shown to be a catalyst for visible-light-induced water oxidation.

Cited by 146 publications

References 12 publications

Design and development of photoanodes for water-splitting dye-sensitized photoelectrochemical cells

Design and development of photoanodes for water-splitting dye-sensitized photoelectrochemical cells

Conversion of CO2 via Visible Light Promoted Homogeneous Redox Catalysis

Recent trends in the use of polyoxometalate-based material for efficient water oxidation

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