Self-assembly method of precious metal quantum dot/one-dimensional titanate nanoribbon heterojunction material

Abstract

The invention relates to a self-assembly method of a photocatalyst material, and relates to a self-assembly method of a precious metal quantum dot / one-dimensional titanate nanoribbon heterojunction material, which is characterized by comprising the following steps of: (1) preparing a phosphonic acid surfactant solution with the concentration of not less than 10mg / mL; (2) obtaining the one-dimensional titanate nanoribbon processed with a phosphonic acid surfactant according to the mass ratio of the one-dimensional titanate nanoribbon to the phosphonic acid surfactant solution being 1:1-1:10; (3) preparing a precious metal quantum dot solution with the concentration of not less than 10mg / mL according to the mass ratio of the precious metal quantum dot to the one-dimensional titanate nanoribbon being 0.1-12 percent; (4) immersing the one-dimensional titanate nanoribbon processed with the phosphonic acid surfactant in the precious metal quantum dot solution to obtain the precious metal quantum dot / one-dimensional titanate nanoribbon heterojunction material with different precious metal contents in a self-assembly mode. The method has simple process and low cost. Moreover, the obtained photocatalyst material has prominent photocatalytic enhancement effect.

Description

Technical field [0001] The invention relates to a self-assembly method of photocatalyst materials and belongs to the field of nano materials and nano technology. Background technique [0002] One-dimensional nanomaterials exhibit superior mechanical, optical, electrical, magnetic and other physical properties due to their special nano-sized morphology and structure, which has increasingly become a research focus. TiO 2 Semiconductor-based nanomaterials have great advantages as photocatalysts and have good application prospects in environmental protection, clean energy, and green building materials. Studies have shown that under ultraviolet light conditions, TiO 2 The material can be used as a photocatalyst to effectively decolor and mineralize macromolecular organic matter, and decompose into small inorganic molecules such as water and carbon dioxide. But TiO 2 The material has a wide band gap (3.2eV), and can only use ultraviolet light with a wavelength of less than 380nm. Und...

AI Technical Summary

Problems solved by technology

However, the degree of dispersion of noble metals on the surface of photocatalyst materials, particle size and interface binding have a significant impact on the enhancement of photocatalytic effect, and there is still a lack of effective technical means.

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