Low temperature process of preparing carbon-doped mesoporous TiO2 visible light catalyst

Abstract

The present invention relates to preparation process of carbon-doped mesoporous TiO2 visible light catalyst, and belongs to the field of nanometer catalyst material technology. The present invention features that amorphous titania powder prepared with titanium containing compound through hydrolysis and used as the titanium source and saccharide compound as carbon source are produced into the carbon-doped mesoporous TiO2 visible light catalyst through heat treatment in water or solvent, suction filtering, washing and drying. The carbon-doped mesoporous TiO2 visible light catalyst has specific surface area up to 126 sq m / g, homogeneous pore size of about 8 nm, high visible light catalytic activity, simple synthesis path and easy control of the technological process.

Description

technical field

[0001] The invention relates to a low-temperature preparation method of a carbon-doped mesoporous titanium dioxide visible light photocatalyst, belonging to the field of nanometer photocatalytic materials. Background technique

[0002] Semiconductor nano-titanium dioxide has become an ideal material for solving energy and environmental problems because of its stable chemical properties, non-toxicity and effective removal of pollutants in the atmosphere and water. Titanium dioxide has a wide range of uses. It can photocatalytically degrade a variety of organic pollutants into non-toxic small molecular compounds, such as water, carbon dioxide, inorganic acids, etc., and photolyze water into hydrogen and oxygen to obtain hydrogen energy; effectively convert solar energy into chemical energy. . However, titanium dioxide is a semiconductor compound with a wide band gap (Eg=3.2eV), and only sunlight with a shorter wavelength (λ≤387 nanometers) can be absorbed, and...

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