Photocatalytic polyoxometalate compositions of tungstovanadates and uses as water oxidation catalysts
AssigneeEmory University
InventorsCraig L. Hill, Iourii V. Gueletii, Jie Song, Hongjin Lv, Djamaladdin Musaev, Zhen Luo
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Abstract
This disclosure relates to photocatalytic polyoxometalate compositions of tungstovanadates and uses as water oxidation catalysts. In certain embodiments, the disclosure relates to compositions comprising water, a complex of a tetra-metal oxide cluster and VW9O34 ligands, and a photosensitizer. Typically, the metal oxide cluster is Co. In certain embodiments, the disclosure relates to electrodes and other devices comprising water oxidation catalysts disclosed herein and uses in generating fuels and electrical power from solar energy.
Claims17
A composition comprising,
- a) water,
- b) a complex of a tetra-metal oxide cluster and VW9O34 ligands, and
- c) a photosensitizer.
An electrochemical cell comprising:
- a) a first electrode,
- b) a photosensitizer,
- c) a complex of a tetra-metal oxide cluster and VW9O34 ligands, and
- d) a second electrode.
A method of oxidizing water comprising exposing a composition comprising:
- a) water,
- b) a complex of a tetra-metal oxide cluster and VW9O34 ligands, and
- c) a photosensitizer,
- to light under conditions such that oxygen is formed.
A process for preparing a complex of a tetra-metal oxide cluster and VW9O34 ligands comprising mixing M(NO3)2, WO42− salts and VO3 − salts, under conditions such that of a tetra-metal oxide cluster and VW9O34 ligands is formed wherein M is a metal.
Dependencies are inferred from the claim text.