Porphyrin-Sensitized Evolution of Hydrogen using Dawson and Keplerate Polyoxometalate Photocatalysts.

  title={Porphyrin-Sensitized Evolution of Hydrogen using Dawson and Keplerate Polyoxometalate Photocatalysts.},
  author={Athanassios A. Panagiotopoulos and Antonios M Douvas and Panagiotis Argitis and Athanassios G. Coutsolelos},
  volume={9 22},
Hydrogen evolution using photocatalytic systems based on artificial photosynthesis is a major approach toward solar energy conversion and storage. In the polyoxometalate-based photocatalytic systems proposed in the past, middle/near UV light irradiation and noble-metal catalysts were mainly used. Although recently polyoxometalates were sensitized in visible light, photosensitizers or catalysts based on noble metals, and/or poor activity of polyoxometalates were generally obtained. Here we show… 
Polyoxometalate-Based Compounds for Photo/electrocatalytic Applications.
This Minireview provides basic introduction related to photo/electrocatalytic HER, OER and CO 2 RR, followed by the classification of  well-defined POM-based compounds toward different catalytic reactions.
Heavy atom-free Keto-di-coumarin as earth-abundant strong visible light-harvesting photosensitizer for efficient photocatalytic hydrogen evolution
Abstract Constructing low-cost and environmentally benign catalytic systems for visible light-driven water splitting into hydrogen represents a promising strategy for the conversion of solar energy
Phthalocyanine-sensitized evolution of hydrogen and degradation of organic pollutants using polyoxometalate photocatalysts
The high efficacy of P OM catalysts for H 2 evolution and the degradation of MB were attributed to the sensitization of POMs by ZnQPc 4+ , which was enabled by the transfer of photogenerated electrons of Zn QPc 3+ to the lowest unoccupied molecular orbital (LUMO) of Pom.
Multi-electron reduction of Wells-Dawson polyoxometalate films onto metallic, semiconducting and dielectric substrates.
Overall, the multi-electron reduction of Wells-Dawson ammonium salts onto metallic and semiconducting substrates (Al, ITO) is determined by the relative position of the LUMO level of POMs in relation to the Fermi level of the substrate (i.e. substrate work function).
A sandwich-type polyoxometalate for efficient noble-metal-free hydrogen evolution upon visible light irradiation
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Polyoxometalate-Based Photoactive Hybrid: Uncover the First Crystal Structure of Covalently Linked Hexavanadate-Porphyrin Molecule.
An unprecedented polyoxometalates-based photoresponsive cluster, which can be synthesized by covalently grafting two tris-functionalized Zn-porphyrin ligands onto Lindqvist-type hexavanadate cluster using decavanadates (TBA)3[H3V10O28] (denoted as V10, TBA = tetrabutylammonium cation) as precursor is discovered.
Coordinative interaction between nitrogen oxides and iron-molybdenum POM Mo72Fe30.
The produced complex compound [POM-( NO2)x]·(NO2)y possesses sufficient NO2 capacity, water solubility and pH-dependant decomposition; these are important properties of a potential NOx donor, which can be hypothetically applied in biomedicine.
Essential effect of proton coupled electron sequent transfer on photocatalytic water complete dissociation: A DFT study
Abstract Photocatalytic water splitting for hydrogen energy is one of the most promising ways to solve the energy crises. The mechanism is unclear on the sequence of proton coupled electron transfer
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Abstract Two new single ion sandwich-type polyoxometalate compounds built on Strandberg-type anions and divalent transition metal cations, (NH4)10[Cu(H2O)4(P2Mo5O23)2]·6H2O (1) and
Dual-Functional Photocatalysis for Simultaneous Hydrogen Production and Oxidation of Organic Substances
The present review showcases the scientific progress in the field of dual-functional photocatalysis for hydrogen evolution coupled with the oxidation of chemical substances. Considering that hydrogen


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Abstract A molecular Keggin polyoxometalate catalyst K 7 [Co III Co II (H 2 O)W 11 O 39 ]( 1 ) was successfully synthesized and efficiently catalyzed the hydrogen evolution. To the best of our
A Bioinspired System for Light-Driven Water Oxidation with a Porphyrin Sensitizer and a Tetrametallic Molecular Catalyst
Inspired by natural photosynthesis, the aim of light-driven water splitting is to produce renewable fuels by exploiting solar radiation. Sustained hydrogen production is desirable in such systems,
Visible-light-driven hydrogen evolution from water using a noble-metal-free polyoxometalate catalyst
Abstract In an effort to address the need to develop hydrolytically more stable, molecular water reduction catalysts (WRCs) amenable to in-depth investigation, we report here one prototype: a
Photocatalytic hydrogen evolution under visible light irradiation by the polyoxometalate α-[AlSiW11(H2O)O39]5− -Eosin Y system
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New trends in polyoxometalate photoredox chemistry: from photosensitisation to water oxidation catalysis.
  • C. Streb
  • Chemistry, Medicine
    Dalton transactions
  • 2012
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This functional and modular system constitutes a promising step for the development of charge photoaccumulation devices and subsequent photoelectrocatalysts for artificial photosynthesis.
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The photoredox behaviour of two water soluble derivatives of zincporphyrin, 5,10,15,20-tetra-p-sulfonatophenyl (1) and 5,10,15,20-tetra-p-N-methylpyridiniochloride (2), was investigated using laser
Photosensitised reduction of water to hydrogen using water-soluble zinc porphyrins
We have confirmed an earlier report by Kalanasundaram and Gratzel that a positively charged, water-soluble zinc porphyrin photosensitises the reduction of water to H2 with high efficiency. Using MV2+