Quartz sand supported lanthanum titanate photocatalyst and method for preparing same

Abstract

The invention discloses a quartz sand supported lanthanum titanate photocatalyst. The quartz sand supported lanthanum titanate photocatalyst mainly comprises absolute ethyl alcohol, absolute methanol, acetone, titanium alkoxide, guiding agents, lanthanum acetate, ammonium acetate, glacial acetic acid, butylene glycol and quartz sand. A method for preparing the quartz sand supported lanthanum titanate photocatalyst includes preparing precursors, to be more specific, adding the titanium alkoxide and the guiding agents into the absolute ethyl alcohol, the absolute methanol and the acetone to obtain titanium alkoxide solution, forming lanthanum acetate solution from distilled water, the lanthanum acetate, the ammonium acetate and the glacial acetic acid, adding the titanium alkoxide solution into the lanthanum acetate solution drop by drop and adding the butylene glycol into the lanthanum acetate solution to obtain final transparent solution; carrying out support and heat treatment, to be more specific, adding the quartz sand into the final transparent solution, arranging beakers in magnetic stirring constant-temperature water bath kettles, stirring the final transparent solution under the condition of the temperature of 50-90 DEG C to obtain light yellow gel, drying the light yellow gel until the light yellow gel is dehydrated, grinding the light yellow gel to obtain powder, arranging the powder in a program-control chamber electric furnace, heating the program-control chamber electric furnace at the room temperature at the heating rate of 2-10 DEG C / min until the temperature of the program-control chamber electric furnace reaches a calcination temperature, keeping the calcination temperature unchanged for 1-10 h, cooling the powder and then grinding the powder to obtain materials. The quartz sand supported lanthanum titanate photocatalyst and the method have the advantage that the pollutant photocatalytic purification capacity of lanthanum titanate can be obviously improved.

Description

Technical field: [0001] The invention relates to the field of environmental purification functional materials, and is a quartz sand-loaded lanthanum titanate photocatalyst and a preparation method thereof. Background technique [0002] In more than 40 years of research, the activity of photocatalysts is the most important factor restricting its industrial application. At the same time, large-scale environmental pollution control must also solve the catalyst recycling technology. Loading the catalyst powder on a carrier with a large specific surface area can solve the problem of catalyst powder recycling and provide the possibility for the practical application of the catalyst. At the same time, the dispersion of photocatalysts on the carrier will weaken self-agglomeration, inhibit grain growth, and improve photocatalytic performance. The choice of carrier is a key factor in the preparation of supported photocatalytic materials. Researchers have used many materials as catal...

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Problems solved by technology

At the same time, the research on the immobilization of lanthanide titanate photocatalysts has not attracted the attention of researchers, and there are few reports on the research on supported lanthanum titanate photocatalysts and their preparation methods.