A kind of photocatalyst paint and coating thereof

Abstract

The invention belongs to the technical field of photocatalyst materials, and specifically relates to a photocatalyst coating, which includes a wrinkled graphene ball carrier and a titanium dioxide functional layer coated on the surface of the wrinkled graphene ball carrier, and the mass ratio of the wrinkled graphene ball to titanium dioxide is 1:0.2 ~2, I D / I G Less than 0.01; the wrinkled graphene sphere is an AB stack structure, and the stack thickness is greater than 30 layers. The invention also includes a photocatalyst coating and a preparation method thereof. The wrinkled graphene spheres used have thermal electron accumulation effect, reduce the potential barrier between graphene and titanium dioxide, and improve the light quantum efficiency. At the same time, the titanium dioxide modified by chloroplatinic acid and sodium borohydride As a functional layer, the valence structure of titanium atoms is increased, the band gap is reduced from multiple angles, and the expansion of light wavelength by titanium dioxide is promoted, finally realizing the photocatalyst applied to visible light and near-infrared light. The photocatalyst coating of the present invention not only expands the light absorption wavelength, enables the photocatalyst to be widely and efficiently applied under visible light, but also improves the energy utilization rate and reduces the cost.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst materials, and in particular relates to a photocatalyst paint and a coating thereof. Background technique [0002] With the development of society, social materials have been greatly enriched. However, with the extensive use of chemical products, harmful gases such as formaldehyde will inevitably have an impact on the living and working environment, and even induce body diseases, seriously affecting people's health. [0003] Photocatalyst, also called photocatalyst, is a general term for semiconductor materials with photocatalytic function represented by nano-scale titanium dioxide. As early as the 1930s, scientists had discovered photocatalyst materials based on zinc oxide, which degraded harmful substances into harmless substances through photocatalysis, which brought hope for the improvement of human living environment. In particular, the discovery of Professor Kenichi Honda of the Univ...

AI Technical Summary

Problems solved by technology

Therefore, the use of titanium dioxide photocatalyst needs to be excited by ultraviolet light sources that are harmful to the human body, which is inconvenient to use, and extending its application range to the visible light region has become an urgent problem to be solved.

[0007] Second, the light absorption efficiency is low and the utilization rate is low

The existing titanium dioxide photocatalyst absorbs light energy and also reflects most of it. The absorption of light is limited, which in turn reduces the utilization rate of light energy, which is a waste of electric energy.

[0008] Third, the stability of free radicals is poor and the catalytic efficiency is low

The photocatalysts used in the market are not efficient in converting light energy into free radicals, and the lack of stability of free radicals further reduces the catalytic efficiency

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