Synthesis method of rare earth/iodine co-doped photo-degradation catalyst

Abstract

The invention discloses a synthesis method of a rare earth / iodine co-doped photo-degradation catalyst. The synthesis method comprises the following steps: stirring and quickly dissolving iodic acid, adding deionized water, dropwise adding tetra-n-butyl titanate (Ti(OBu)4) slowly, and producing foam precipitate; after the tetra-n-butyl titanate is completely dissolved in water, performing ultrasonic dispersing on the tetra-n-butyl titanate until the tetra-n-butyl titanate is dispersed uniformly, reacting at 70 to 90 DEG C to obtain milk white gel, slowly decreasing the temperature after the gelis dried, and preparing to obtain a powder I / TiO2 precursor; roasting the powder at 380 to 420 DEG C, and cooling; dropwise adding rare earth nitrate solution slowly with continuous stirring, stirring uniformly, performing ultrasonic dispersing, and then evaporating water in a water bath at 70 to 90 DEG C; drying in a drying box, and roasting at 340 to 360 DEG C in a muffle furnace to obtain a light yellow powdery rare earth / I / TiO2 photocatalyst. The synthesis method of the rare earth / iodine co-doped photo-degradation catalyst is simple in preparation process and lower in cost; rare earth isdoped in titanium dioxide, which is beneficial to improving the photodegradation activity of a catalyst.

Description

Technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a synthesis method of a rare earth doped photodegradation catalyst. Background technique [0002] In 1972, Fujishima described the "Honda Fujishima effect" for the first time, and published a report on TiO in Nature magazine. 2 The discussion of heterogeneous photocatalysis on the photolysis of water on the electrode is a new leap in the era of heterogeneous photocatalysis. With the continuous development of the global economy, people’s demand for industry has increased, resulting in serious environmental pollution and destruction of the natural environment. Wastewater discharged from industrial production has caused water bodies to become odorous and deteriorated. The organic pollutants discharged contain Aquatic organisms have toxic by-products, which have a serious impact on people's daily lives. Photocatalytic technology can use sunlight to control pollution with the partici...

AI Technical Summary

Problems solved by technology

But TiO 2 It has a large forbidden band width Eg (3.2eV), which can only be carried out under ultraviolet light with a wavelength of λ2 It has a lower quantum yield and a lower photodegradation catalytic effect