阅读说明：本技术 光催化剂分散液、光催化剂复合材料及光催化剂装置 (Photocatalyst dispersion liquid, photocatalyst composite material and photocatalyst device ) 是由 内藤胜之 信田直美 横田昌广 太田英男 猪又宏贵 千草尚 于 2019-09-12 设计创作，主要内容包括：本发明提供分散稳定且光催化活性、抗菌作用高的光催化剂分散液、高活性且能够在低温下简便地形成且不易剥离的光催化剂复合材料及光催化剂装置。提供包含光催化剂粒子、银纳米线和分散介质的光催化剂分散液和使用了其的光催化剂复合材料以及光催化剂装置。(The invention provides a photocatalyst dispersion liquid which is stable in dispersion and has high photocatalytic activity and antibacterial action, a photocatalyst composite material which has high activity, can be formed simply at low temperature and is not easy to strip, and a photocatalyst device. Provided are a photocatalyst dispersion liquid containing photocatalyst particles, silver nanowires, and a dispersion medium, and a photocatalyst composite material and a photocatalyst device using the same.)

1. A photocatalyst dispersion liquid comprising photocatalyst particles, silver nanowires, and a dispersion medium.

2. The photocatalyst dispersion liquid according to claim 1, wherein the photocatalyst contains a metal oxide selected from the group consisting of tungsten oxide, titanium oxide, zinc oxide, niobium oxide, and tin oxide.

3. The photocatalyst dispersion liquid according to claim 1 or 2, wherein the silver nanowires have an average diameter of 10 to 200nm and an average length of 1 to 50 μm.

4. The photocatalyst dispersion liquid according to any one of claims 1 to 3, wherein the photocatalyst particles have an average diameter of 2 to 500 nm.

5. A photocatalyst composite material is provided with a substrate and a photocatalyst layer containing photocatalyst particles and silver nanowires.

6. The photocatalyst composite of claim 5, wherein the photocatalyst particles comprise tungsten oxide.

7. A photocatalyst device is provided with:

the photocatalyst composite material according to claim 5 or 6,

A light irradiation member for imparting photocatalytic activity to the photocatalyst composite material, and

a supply member that supplies a substance to be treated to the photocatalyst composite,

the photocatalyst composite that is catalytically active by the light facilitates a chemical reaction for treating the substance.

8. The photocatalyst apparatus according to claim 7, wherein the light irradiation member is an LED.

9. The photocatalyst apparatus according to claim 7 or 8, wherein the supply member is a fan.

10. The photocatalyst apparatus of any one of claims 7 to 9, wherein the photocatalyst layer further comprises an adsorbing material that adsorbs the substance.

Technical Field

Background

It is known that a photocatalyst generates excited holes by light and promotes a strong oxidation reaction. As a photocatalyst having such an action, various photocatalysts are known, and the accelerating action is utilized for decomposition and removal of harmful organic molecules, sterilization, maintenance of hydrophilicity of a base material, and the like. However, the antibacterial property by the photocatalyst is difficult to express without being irradiated with light. In order to solve such problems, a photocatalyst obtained by mixing silver nanoparticles with a photocatalyst is known in order to exhibit antibacterial properties even when light is not irradiated thereto, and in order to increase light absorption by a plasmon effect at the time of light irradiation.

However, there are the following problems: the photocatalyst dispersion liquid obtained by combining silver nanoparticles with a photocatalyst by coating is difficult to obtain a uniform photocatalyst layer, and the silver nanoparticles are liable to flow out of the photocatalyst layer due to their shape and size.

Disclosure of Invention

Problems to be solved by the invention

The present embodiment is intended to provide a photocatalyst dispersion liquid having high dispersion stability and causing little silver flow out during the formation of a coating film, a photocatalyst composite material having high antibacterial activity or photocatalytic activity using the photocatalyst dispersion liquid, and a photocatalyst apparatus using the photocatalyst composite material.

Means for solving the problems

The photocatalyst dispersion liquid according to the present embodiment includes photocatalyst particles, silver nanowires, and a dispersion medium.

The photocatalyst composite material according to the embodiment includes a base material and a photocatalyst layer, and the photocatalyst layer includes photocatalyst particles and silver nanowires.

In addition, the photocatalyst apparatus according to the embodiment includes:

the photocatalyst composite material,

A light irradiation member for generating photocatalytic activity in the above photocatalyst composite material, and

a supply member for supplying a substance to be treated to the photocatalyst composite material,

the photocatalyst composite material having catalytic activity by the light promotes chemical reactions for treating the substance.

Drawings

Fig. 1 is a schematic view of a photocatalyst dispersion liquid according to an embodiment.

Fig. 2 is a schematic view of a photocatalyst composite according to an embodiment.

Fig. 3 is a schematic view of a photocatalyst apparatus according to an embodiment.

Description of the symbols

10 … photocatalyst particles, 11 … silver nanowires, 20 … photocatalyst composite, 21 … base material, 22 … photocatalyst layer, 23 … photocatalyst particles, 24 … silver nanowires, 30 … photocatalyst device, 31 … photocatalyst composite, 32 … light irradiation member, member for supplying substance receiving photocatalytic action to base material by 33 …, 34 … reaction chamber

Embodiments relate to a photocatalyst dispersion liquid, a photocatalyst composite material, and a photocatalyst apparatus.