Catalyst structure capable of improving yield of hydrogen produced by water photolysis and preparation method of catalyst structure

CN119346182APending Publication Date: 2025-01-24MOTIAN HYDROGEN ENERGY TECHNOLOGY (BEIJING) CO LTD
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Patent Information

Application Number
CN202310873611.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-07-17
Publication Date
2025-01-24

AI Technical Summary

Technical Problem

Existing titanium dioxide photocatalysts can only absorb the ultraviolet part of the solar spectrum, resulting in more than 95% of the energy in the solar spectrum being wasted and the catalytic efficiency is low.

Method used

By using nanostructured titanium dioxide semiconductors, combining the structures of crystalline and amorphous phases, the surface area of ​​the semiconductor is expanded, and disordered processes are introduced through hydrogenation treatment to form nanostructures that narrow the band gap and add band tails.

Benefits of technology

The solar absorption capacity and optical activity of the photonic agent can be significantly improved, which can effectively absorb visible light and infrared light, significantly improved the hydrogen production rate and stability.

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Abstract

The invention relates to a semiconductor nanostructure of a catalyst capable of improving the yield of hydrogen produced by water photolysis, the semiconductor nanostructure comprises the photocatalyst, the nanostructure comprises a crystal phase and an amorphous phase in contact with the crystal phase, the surface of the amorphous phase is disordered, and the surface of the amorphous phase is disordered. The crystalline phase and the amorphous phase in each nanoparticle each have a dimension of at least one nanoscale. The amount of amorphous phase is selected. In a preferred embodiment of the present application, the nanostructure is crystalline titanium dioxide and amorphous titanium dioxide in contact with the crystalline titanium dioxide. Each of the crystal nucleus and the amorphous titanium dioxide has a size of at least one nanoscale. The invention also comprises a preparation method of the nano-particles and a preparation method of the core amorphous phase.
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