General light source response modified titanium dioxide solid acid catalyst and preparation method

Abstract

The invention belongs to the field of preparation of a catalyst, and particularly relates to a general light source response modified titanium dioxide solid acid catalyst and a preparation method. The preparation method comprises the steps of bearing precious metal on a TiO2 carrier by a light source deposition method so as to prepare a precious metal / TiO2 catalyst; and then preparing the general light source response efficient modified titanium dioxide solid acid catalyst via sulfuric acid acidification and treatment. According to the invention, the defect that an existing photocatalyst can only be degraded by being irradiated by light sources which are high in price and energy consumption, such as an xenon lamp, is overcome, and the use cost is reduced; under the condition of irradiating by a common light source, the catalyst has an obvious effect of degrading macromolecule organic pollutants; moreover, the modified catalyst is stable in performance, is low in use amount, is high in degradation speed, does not generate secondary pollution, and can be recycled.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to a universal light source response modified titanium dioxide solid acid catalyst and a preparation method. Background technique [0002] Sustainable development is the subject of common concern of all mankind, and environmental issues are the focus of common concern of mankind. Modern industrialized production methods and human lifestyles have resulted in the discharge of a large number of pollutants that pose a serious threat to the survival of animals and plants into the environment, causing irreversible environmental pollution and directly affecting and destroying the ecosystem. Among them, industrial production wastewater and domestic sewage pollute the environment particularly seriously, which has caused many environmental pollution incidents and brought irreparable losses to the country and society. Photocatalytic degradation of pollutants in water is an eff...

AI Technical Summary

Problems solved by technology

Modern industrialized production methods and human lifestyles lead to the discharge of a large number of pollutants that pose a serious threat to the survival of animals and plants into the environment, causing irreversible environmental pollution and directly affecting and destroying the ecosystem.

Among them, industrial production wastewater and domestic sewage pollute the environment particularly seriously, which has caused many environmental pollution incidents and brought irreparable losses to the country and society.

Photocatalytic degradation of pollutants in water is an efficient, environmentally friendly, and energy-saving technology. The United States, Japan and other countries have produced corresponding photocatalytic products and commercialized them. However, my country's technology in this area still needs breakthroughs.

[0003] Titanium dioxide is a photocatalyst with potential applications, but it is difficult to compete with traditional products due to its low degradation efficiency. Therefore, the key to this technology is to improve its catalytic activity by modifying it.

At present, the method of noble metal modification can obtain better results, but another reason restricts the commercial application of this catalyst, that is, the need to use expensive and energy-intensive light sources such as xenon lamps