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US 11,958,044 B2Granted
Thin film based photocatalyst device for hydrogen generation and alcohols oxidation in direct sunlight
AssigneeCouncil of Scientific and Industrial Research
InventorsChinnakonda Subramanian Gopinath, Naresh Nalajala
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Abstract
The present invention relates to a photocatalyst device obtained by thin film making on solid surfaces, wherein the device comprises of titania, optionally in the form of composite with noble or transition metal(s) or metal oxides. This device (FIG. 1) is evaluated in direct sunlight for hydrogen generation (FIG. 4) and oxidation of alcohols (Table 3) using aqueous alcohol solution through water splitting and simultaneously oxidizing alcohol to oxygenated products.
Claims16
A photocatalyst thin film device comprising;
- a) a titania photocatalyst film in a form of a composite;
- b) a support or glass vessels on which the titania photocatalyst film is deposited, wherein the support is selected from a glass plate, glass vessels, glass containers, an indium tin oxide (ITO) glass plate, and a fluorine-doped tin oxide (FTO) glass plate, a silicon wafer or steel;
- and
- c) an aqueous alcohol substrate;
- wherein the composite comprises the titania photocatalyst and a co-catalyst, wherein the co-catalyst is selected from the group consisting of a noble metal, a transition metal, a metal oxide and a combination thereof;
- and wherein a ratio of a weight of the titania, in mg, to an area of the film, in cm2, is in a range of 0.1 to 4;
- wherein the photocatalyst thin film device is configured to generate hydrogen and alcohol oxygenated products by splitting water in direct sunlight.
4 more elements
Dependencies are inferred from the claim text.