Graphite-phase carbon nitride photocatalyst modified by basic bismuth carbonate and preparation method of graphite-phase carbon nitride photocatalyst

Abstract

Provided is a graphite-phase carbon nitride photocatalyst modified by basic bismuth carbonate. The graphite-phase carbon nitride photocatalyst comprises the chemical components of: in percent by mass,0.1-1.5% of basic bismuth carbonate and the balance graphite-phase carbon nitride, and the preparation method of the graphite-phase carbon nitride photocatalyst modified by the basic bismuth carbonate mainly comprises the steps of: adding 5-20 mg of bismuth citrate into every 30 g of urea, putting the urea and bismuth citrate into an agate mortar, performing full stirring, grinding and mixing for20 minutes, placing the obtained mixture in an alumina porcelain ark, then placing the porcelain ark in a muffle furnace for heat treatment, raising the temperature from a room temperature to 450-600DEG C at a heating rate of 2-30 DEG C per minute, performing thermal insulation for 1-2 hours, cooling to room temperature with the furnace, placing the obtained mixture in the agate mortar again, and grinding the mixture thoroughly into powder of 1-5 mum so as to obtain the graphite-phase carbon nitride photocatalyst modified by the basic bismuth carbonate. The graphite-phase carbon nitride photocatalyst has a preparation method with simple and easy operation, easily available raw materials, stable physical and chemical properties, environmental friendliness and high photocatalytic activity,and is beneficial to practical application and industrial production.

Description

technical field [0001] The invention belongs to the field of material technology, in particular to a photocatalyst material and a preparation method. Background technique [0002] Human beings consume a large amount of fossil fuels, causing an energy crisis, and discharge waste water, waste gas, waste residue and other pollutants into the ecological environment, causing serious environmental problems, which have endangered human health and sustainable social development. Photocatalytic technology uses semiconductor materials as a carrier to convert solar energy into clean chemical energy, or to generate active groups to directly degrade and mineralize organic pollutants. Photocatalytic technology has a good application prospect in solving energy crisis and environmental problems. Graphite phase carbon nitride is a semiconductor material that does not contain metal elements. It has the advantages of low preparation cost, stable physical and chemical properties, non-toxic and...

AI Technical Summary

Problems solved by technology

However, bismuth subcarbonate has a large band gap, which is not conducive to absorbing and utilizing sunlight in the visible light band, and has low photocatalytic activity, so it is not suitable for application in the field of photocatalysis.

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