Preparation of multi-stage structure cerium doped titanium dioxide mesoporous material as well as applications thereof in photocatalysis and CO oxygenation

Abstract

The invention relates to preparation of a cerium doped titanium dioxide meso-porous material with a scaly multilevel structure and application of the cerium doped titanium dioxide meso-porous material to photocatalysis degradation of rhodamine B under the irradiation of visible light and to low-temperature oxidation of carbon monoxide by being used as a catalyst to load gold nanometer particle. Anonionic surfactant Span-60 is used as a structure guiding agent, the prepared cerium doped titanium dioxide with the multilevel structure is the scaly material with meso-porous structure formed by small crystal grains with anatase phase with a size of between 7.6 and 10.5nm, and the size of the meso-pore is between 7.2 and 13.6. The product can get better effect when used for photocatalysis degradation of rhodamine B by visible light, and has higher activity for the low-temperature catalytic oxidation of CO when used as the carrier of the gold catalyst. The preparation and the application have the advantages of simple equipment, mild synthetic conditions, easily bough material and the suitability for large-scale industrialized production.

Description

Preparation of Hierarchical Ce-doped TiO Mesoporous Materials and Their Applications in Photocatalysis and CO Oxidation technical field The invention relates to the preparation of a cerium-doped titanium dioxide mesoporous material with a scale-like multi-level structure, which is used for photocatalytic degradation of rhodamine B under visible light and as a catalyst carrier loaded with gold nanoparticles for low-temperature carbon monoxide oxidation. The field of inorganic nanocatalytic materials. Background technique Photocatalyst is a semiconductor material with photocatalytic activity under the irradiation of external light source. The preparation of semiconductor material used as photocatalyst is the core technology of photocatalytic oxidation. The anatase phase nano-TiO2 photocatalyst not only has stable chemical and optical properties, but also has high activity, and is currently the photocatalyst widely used in photocatalytic technology. However, due to its wide ...

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Problems solved by technology

In fuel cell research, the presence of CO not only causes fuel cell poisoning but also competes with H2 for the reaction with oxygen, resulting in a significant reduction in fuel cell efficiency

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