A stacked spectral spectroscopic solar photocatalytic reaction system

A photocatalytic reaction and solar energy technology, which is applied in the field of solar energy utilization, can solve the problems of low spectral and quantum conversion efficiency, achieve wide spectral response, high quantum conversion efficiency, and achieve the effect of efficient anisotropic migration

Active Publication Date: 2021-06-18
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a stacked spectrum spectroscopic solar photocatalytic reaction system, which overcomes the defects that a single semiconductor photocatalytic thin film material can only respond to a specific band spectrum and low quantum conversion efficiency, thereby realizing wide spectral response and High quantum conversion efficiency, greatly improving the utilization rate of solar energy

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  • A stacked spectral spectroscopic solar photocatalytic reaction system
  • A stacked spectral spectroscopic solar photocatalytic reaction system
  • A stacked spectral spectroscopic solar photocatalytic reaction system

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Embodiment 1

[0018] In the laminated spectrum spectroscopic solar photocatalytic reaction system of the present invention, N=3, wherein the first layer of photocatalytic film material is a wide bandgap photocatalytic film material that responds to ultraviolet light; the second layer of photocatalytic film material is a photocatalytic film material that responds to The wide-bandgap photocatalytic material of short-wave visible light; the third layer of photocatalytic film material is a narrow-bandgap photocatalytic film material that responds to long-wave visible light; a transition layer is connected between two adjacent photocatalytic film materials, and the third layer Cocatalyst nanomaterial particles with surface plasmon resonance effect are deposited on the surface, which can respond to near-infrared light; the end surface near the light-receiving surface is an anti-reflection and anti-reflection film with a porous-pyramid composite structure with textured light trapping effect, and its...

Embodiment 2

[0028] In the laminated spectrum spectroscopic solar photocatalytic reaction system of the present invention, N=4, wherein the first layer of photocatalytic film material is a wide bandgap photocatalytic film material that responds to deep ultraviolet light; the second layer of photocatalytic film material is The wide bandgap photocatalytic film material responding to ultraviolet light; the third layer photocatalytic film material is a wide bandgap photocatalytic film material responding to short-wave visible light; the fourth layer photocatalytic film material is a narrow bandgap photocatalytic film material responding to long visible light; There is a transition layer connection between the two adjacent photocatalytic thin film materials, and on the third layer, co-catalyst nanomaterial particles with surface plasmon resonance effect are deposited, which can respond to near-infrared light; the end surface near the light-receiving surface has a textured surface The anti-reflec...

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Abstract

The invention discloses a laminated spectrum spectroscopic solar photocatalytic reaction system, which belongs to the technical field of solar energy utilization. The system is obtained by depositing N layers of photocatalytic thin film materials with gradually decreasing optical bandgap values ​​and continuously changing band edge positions layer by layer on the substrate material, where N≥3; between two adjacent photocatalytic thin film materials There is a transition layer connection between them, and a co-catalyst with surface plasmon resonance effect is deposited on the Nth layer. The end face near the light-receiving surface is an anti-reflection and anti-reflection film with a porous-pyramid composite structure with a suede light-trapping effect. Its material composition The same material as the first layer of photocatalytic film. The significant advantages of the photocatalytic reaction system of the present invention are wide spectral response and high quantum conversion efficiency, which can greatly improve the utilization rate of solar energy.

Description

technical field [0001] The invention relates to a laminated spectrum spectroscopic solar photocatalytic reaction system, which belongs to the technical field of solar energy utilization. Background technique [0002] Among the three common methods of solar energy utilization (photo-thermal conversion, photo-electric conversion, and photo-chemical conversion), photocatalytic technology belongs to the photo-chemical conversion method, and its mechanism is similar to photosynthesis in nature. Hydrogen, CO 2 Preparation of hydrocarbons by reduction, environmental purification, organic synthesis and many other fields. This technology not only increases the supply form and quantity of renewable energy, reduces environmental pollution and damage, but also can control environmental pollution, so it has become a field worthy of attention and development. [0003] The key to the development of solar photocatalysis technology lies in the development of efficient, cheap and stable sem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/12B01J27/24
CPCB01J19/127B01J27/24
Inventor 刘清路赵宗彦
Owner KUNMING UNIV OF SCI & TECH
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