Photocatalyst dispersion liquid, photocatalyst composite material and photocatalyst device
A photocatalyst and composite material technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem that photocatalyst dispersion is difficult to obtain photocatalyst layer, silver Nanoparticle outflow, etc.
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no. 1 Embodiment approach
[0026] The photocatalyst dispersion liquid that embodiment relates to is as figure 1 As shown in , the photocatalyst particles 10 and silver nanowires 11 are dispersed in a dispersion medium (not shown). Although the photocatalyst particles and the silver nanowires are not directly bonded, it is considered that the co-existence of these makes it difficult to aggregate each other.
[0027] The shape of the silver nanowires is not particularly limited, and is selected so as to optimize the desired plasmon effect, dispersion state in the photocatalyst dispersion, and the like. For example, in the embodiment, the silver nanowires preferably have an average diameter of 10-200 nm, an average length of 1-50 μm, and an average aspect ratio of 100-1000. More preferably, the average diameter is 20 to 100 nm, the average length is 4 to 30 μm, and the average aspect ratio is 200 to 500. Here, the average diameter or average length of the silver nanowires can be measured by observing the...
Embodiment approach 2
[0047] Such as figure 2 The photocatalyst composite material 20 according to the embodiment as shown in , includes a substrate 21 and a photocatalyst layer 22 . Photocatalyst layer 22 includes photocatalyst particles 23 and silver nanowires 24 . Such a photocatalyst composite material can be obtained by applying the photocatalyst dispersion liquid described in the first embodiment to the surface of a substrate and drying it.
[0048] The photocatalyst layer may further contain other oxides. For example, silicon oxide has the function of increasing the hydrophilicity of the photocatalyst layer. In addition, tin oxide increases the conductivity of the photocatalyst layer to prevent electrification and makes it difficult for dirt to adhere.
[0049] The photocatalyst layer may also contain graphene oxide or graphite oxide. Thereby, aggregation of catalyst particles can be prevented, and stability and photocatalytic activity can be maintained for a long period of time. Regar...
no. 3 Embodiment approach
[0057] image 3 A schematic diagram showing an example of the configuration of the photocatalyst device according to the third embodiment is shown in .
[0058] As shown in the figure, the photocatalyst device 30 according to the embodiment includes a photocatalyst composite material 31 based on the second embodiment, a light irradiation member 32 for generating photocatalytic activity in the photocatalyst composite material 31 , and a A supply member 33 for supplying the substance. A chamber 34 containing these components may be further provided. In addition, an introduction part 35a for introducing a substance to be processed or a discharge port 35b for discharging a processed substance may be provided.
[0059] Among them, the substance to be treated is a substance to be changed by a chemical reaction promoted by photocatalysis of the photocatalyst composite material. Specifically, gas containing toxic components for which removal of harmful components is desired, gas co...
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Abstract
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